Filename
stringlengths 17
17
| Abstract
stringlengths 76
3.38k
| Highlights
stringlengths 80
1.73k
|
|---|---|---|
S1385894719329353 | Thermal Energy Storage using granular solids is gaining momentum in the last years . With no degradation up to very high temperatures and very low price the use of some granular materials such as sand or | The tensile strength and compressibility of fine CaCO. powders are measured using the SPT. The effects of particle size temperature and consolidation stress are analyzed. Powder cohesiveness is largely increased with temperature and consolidation stress. Data agree with theoretical predictions for elasto plastic interparticle contacts. The decrease of hardness with temperature causes a great increase of cohesiveness. |
S1385894719329377 | Red blood cells the most abundant cellular component in whole blood are an important health indicator and the morphology and behavior of RBCs on porous paper substrates plays a key role in the interpretation of the diagnostic results of paper based blood analysis . The wetting of paper by a blood sample containing dispersed RBCs drives the allocation of RBCs through the fibre network . A blood stain left on paper therefore provides a wealth of information about the distribution and transport behaviors of RBCs . In this work we studied the morphology and formation of and factors influencing the typical shape of blood stains an RBC based coffee ring on paper substrates at both macroscopic and cellular levels . The results show that the ring shaped RBC stain formed on paper is mainly the result of the combined effect of capillary wicking filtration and evaporation flux and is influenced by the fibre structure RBC incubation time relative humidity and paper additives . Most importantly control of RBC stains was achieved by paper structure engineering and the dynamic transportation of RBCs on paper was quantified . These findings provide valuable insight into the control of the spatial distribution of RBCs on porous materials which will be beneficial for the design of desirable paper based diagnostics . A paper based microfluidic device with advanced features was then fabricated to detect the hematocrit level demonstrating the significance of this study for blood based analysis and diagnostics on paper . | A mechanism proposed to describe the movement of red blood cells in paper. A criterion proposed to predict the distribution of red blood cells in paper. Dynamic transport behaviour of red blood cells in paper was quantified. Ultrafast hematocrit detection was achieved using engineered paper microfluidics. |
S1385894719329389 | Super amphiphobic surfaces are limited either by the specific micro morphologies which are difficult to fabricate on particular substrates or by the liquid repellent ability which is confined to liquids with surface tension higher than about 24mNm | Magnetic super amphiphobic nanoparticles with core shell structures were prepared. Super amphiphobic surfaces can repel liquids with surface tension below 20mNm. Water organic marbles were formed based on the super amphiphobic nanoparticles. Microdroplets directed transportation and miniature reactor were achieved. |
S1385894719329407 | As a novel photosensitizer for photodynamic therapy black phosphorus has attracted increasing attention recently . However some of its inherent drawbacks hinder its further biomedical applications . As with most conventional photosensitizers the PDT efficiency of BP is severely limited by the hypoxia tumor microenvironment and low tissue penetration of ultraviolet visible light . Moreover BP also faces additional problems such as mismatch wavelength between photothermal therapy and PDT as well as no imaging ability for cancer diagnosis . Herein we addressed these challenges through the combination of Fe | The. demonstrated excellent light conversion efficiency biocompatibility and imaging properties. The. possessed the efficient ROS generation and high photothermal conversion efficiency. The multimodality imaging of. could be applied for diagnosis. The. had been exploited as a good theranostic agent for cancer diagnosis and treatment. |
S1385894719329419 | The development of a unique and universal strategy for accurate and sensitive quantification of multiple targets is essential for a variety of applications ranging from environmental monitoring to biological research . Herein a novel silver nanoclusters beacon based ratiometric fluorescence sensing strategy for highly sensitive and multiple detection of various targets was reported . Single stranded multifunctional DNA sequences are rationally designed and used for simple synthesis of SNCB . Study of the fluorescent transduction mechanism testified that hybridization induced close proximity of non emitting AgNCs to green emitting AgNCs result in the generation of red emitting AgNCs . Based on target induced transformation of R AgNCs to G AgNCs the developed SNCB enabled the exploitation of a label free ratiometric nanoplatform for versatile fluorescence biosensing . As a proof of concept nanothermometer development pH sensing and single nucleotide polymorphism analysis with high accuracy and sensitivity were successfully realized . This sensing approach is applicable to many types of other targets by simply switching the sequences of nucleic acid probe showing great potential for extending the applications of SNCB in bioanalysis . | Silver nanoclusters beacon SNCB was facilely prepared with multifunctional DNA. Fluorescent transduction of silver nanoclusters was regulated by DNA binding. A universal SNCB based ratiometric nanoplatform was successfully constructed. |
S1385894719329420 | The materials with highly aligned tight arrangement at nano and molecular level exhibit extraordinary mechanical properties . Bacterial cellulose is a three dimensional network hydrogel formed by layers of disordered nanofibers generated by bacteria . Because of the disordered arrangement of nanofibers and the strong interaction between nanofibers it is impossible for BC to give full play to the excellent mechanical properties of nanocellulose . In this paper we first adopted an easily realized method to obtain high strength BC ultrathin film with highly aligned tight nanofiber structure . First the hydrogen bond between nanofibers was weakened by simple solvent replacement and then we stretched the BC hydrogel to 2040 to realize the nanofiber alignment . After by hot pressing drying we first realized the peeling of BC film layer by layer to obtain the high strength ultrathin films inspired by graphene peeling method . The highest strength of the obtained film with thickness of 410m was up to 758MPa and the toughness up to 42.3MJm | BC nanofiber alignment was achieved via a simple one step solvent assisted drawing. It is the first time to realize the peeling of BC film layer by layer to obtain BC ultrathin film. The ultrathin film simultaneously exhibited high tensile strength 758MPa and high toughness 42.3MJm. . The BC ultrathin film can be twisted to super strong fibers or multifunctional fibers. The fiber exhibited high tensile strength 954.2MPa and the record high toughness 93.2MJm. . |
S1385894719329432 | All solid state lithium secondary batteries have never shown both higher energy and power density than them of conventional lithium ion batteries . Herein on the basic of well established percolation theory we expected what includes a dimension controlled solid electrolyte in an electrode can improve the electrochemical properties such as ionic conduction and capacity retention . The behavior of electrodes is systematically demonstrated via computational simulations of virtual electrodes with various dimension controlled solid electrolytes . In particular the effective ionic conductivity and the specific contact area are investigated as key parameters that determine cell performance . We confirmed that the dimension controlled solid electrolyte can improve the electrochemical performance of all solid state batteries by enhancing the effective ionic conductivity which is facilely realized via percolation of the solid electrolyte with an increased dimensional geometry . This simulation prediction suggests a clue to be able to overcome poor performance of present all solid state batteries . | Ionic pathway can be enhanced introducing dimension controlled solid electrolytes. Effective conductivity is a key parameter for performances of all solid state electrode. Blending 0D and 1D solid electrolytes is to realize high performance of all solid state batteries. |
S1385894719329444 | Low lithium ionic conductivity of the solid state electrolyte and large interface resistance have hampered the application of all solid state lithium batteries . Although various methods have been proposed to address these challenge a high efficient method still needs for all solid state batteries . For the first time that Pyrite FeS | FeS. cathode was used as doping agent for Li. type glassceramic electrolyte. The highest lithium ion conductivity of 2.22mScm. was achieved by suitable FeS. doping. The crystallization degree in the designed electrolyte was evaluated by solid state NMR. The cathode doped electrolyte strategy reduced cathode electrolyte interfacial resistance. The fabricated all solid state batteries presented higher initial capacity and better cycling stability. |
S1385894719329456 | The strong persistence wide presence and potential toxicities of perfluorooctanoic acid in aquatic environment makes it a challenge to develop advanced technologies to eliminate it from water . In this study novel | heterojunction was constructed by in situ phase transition. The. I efficiently degraded PFOA under visible light irradiation. The matched band structures of BiOI and Bi. I favor photoinduced carrier separation. OH and. were the main radicals responsible for PFOA degradation. |
S1385894719329468 | This review reports different approaches for the intensification of photocatalytic oxidation processes towards air streams decontamination . From reactor design to the combination of different oxidative processes many approaches have been exploited in order to reach higher photocatalytic reaction rates . When it comes to reactor design enhancing photon transfer is still the biggest challenge to be overcome . Several types of photocatalytic reactors can provide a large surface to volume ratio exhibiting satisfactory mass transfer however the irradiation of the entire catalytic coated surface has shown to be quite difficult for some particular reactor geometries . In this context the use of miniaturized light sources e.g . LEDs has shown to be a promising alternative for a more customized irradiation profile resulting in a more efficient catalytic surface illumination . Coupling PCO with other oxidative processes has been reported to enhance substantially the reaction rates . In fact synergistic effects have been reported for both ozone and plasma enhanced photocatalytic systems . The use of vacuum ultraviolet radiation in PCO processes is another commonly used strategy for the intensification of PCO processes . The improved photocatalytic activity for VUV PCO process is usually related to the ability of VUV light to break most chemical bonds and generate strong oxidants such as hydroxyl radicals and ozone through the photolysis of H | The state of the art on strategies for gas phase PCO process intensification. Advances and challenges on mass and photon transfer. Disruptive reactors designs with a high illuminated catalyst surface area. Reports on LEDs and optical fibers as customized efficient light sources. Overview on hybrid photocatalytic oxidation systems. |
S138589471932947X | Recently biochar has been frequently used to degrade organic contaminants in advanced oxidation processes . In this study Mn doped magnetic biochar was prepared to activate persulfate for the degradation of tetracycline . The activation of PS by MMBC was affected by the doping amount of Mn pyrolysis temperature and residence time . The degree of defects and the formation of metal oxides of MMBC were mainly affected by the pyrolysis temperature . The removal efficiency of TC reached 93 which was much higher than that of the original BC . Electron spin resonance and quenching results showed that SO | The MMBC composites were used in PS activation for TC degradation. MMBC 9002h exhibited the best adsorption and catalytic abilities. Pyrolysis temperatures and residence times effected catalytic abilities of catalysts. SO. and OH were generated in MMBC PS system. The catalysts exhibit high performance stability and reusability. |
S1385894719329481 | Perfluorooctanoic acid is a widely used perfluorinated compound that causes hazards to human health and environment which is difficult to be removed by biological degradation . In this work we demonstrate a highly efficient PFOA degradation process integrated from photocatalysis ozonation and electrocatalysis with rGO BiOCl nanocomposites as catalysts . The PFOA removal ratio in 3h reaches unprecedentedly 95.4 superior to photocatalytic ozonation and photoelectro peroxone process . The mechanism of the enhanced catalytic activities has been detailedly investigated which lies in synergistic effects of photo generated hole h | A combined photo electrocatalytic ozonation is developed to remove PFOA up to 95.4 . Synergistic effects of h. and. OH account for the highly efficient PFOA degradation. The novel rGO BiOCl catalysts offer high E. and effective charge carrier separation. The degradation intermediates are identified and quantified to unravel the mechanism. |
S138589471932950X | Flexible energy storage technologies that can be conformal with deformation as well as maintain their electrochemical functions is consistently and significantly considered . Therefore reinforcing the connection between active materials and supports is particularly pivotal . In this work as a flexible support Ar plasma treated carbon cloth combines with monoaminophthalocyanine Pc NH | Carbon fibers was modified by monoaminophthalocyanine covalently for electrode. The electrode achieves high energy density and cycling stability simultaneously. Multiple bending has little effect on electrochemical performance. |
S1385894719329523 | Wearable electronics and smart garments have attracted increasing attention due to their potential application in health care monitoring artificial intelligence soft robotics etc . However designing robust and flexible wearable electronics that can shield electromagnetic waves and work in all weather environment or even harsh conditions remains a challenge . Herein superhydrophobic and multi responsive fabric composites with outstanding electro photo thermal effect and excellent electromagnetic interference shielding performance are fabricated by decoration of conductive Ag nanoparticles onto the oxygen plasma treated polypropylene fabric followed by multiple spray coating with a mixture of Fe | A superhydrophobic and multi responsive fabric composite was prepared. The EMI shielding performance could reach to 56.1dB in the X band. The absorption ratio of electromagnetic waves could account for 30 . The fabric composite exhibited outstanding electro photo thermal effect. |
S1385894719329535 | The interface polarization are of great important for electromagnetic wave absorption . However the tailored interfacial structure and corresponding effect on EWA remain a huge challenge . Here a novel strategy of constructing interfacial hierarchical structure is reported to unveil such basic relationship . The melamine carbonized sponge composites with interfacial hierarchical structure are successfully synthesized under the assistance of trace amounts of nickel metal catalysis . The as prepared MCS composites present adjustable microwave absorption performance with carbonization temperature increasing from 600 to 900C . Experimental and simulation results reveal the excellent EWA benefitting from appropriate interface polarization . Moreover the model of interface polarization in dielectric behaviors is proposed . As a result the interface factor is found to be a key factor to balance interface polarization . Remarkably when the value of is optimized to 0.3 MCS8 achieves ultralight 5.36mgcm | Carbon materials with interfacial hierarchical structure were successfully obtained. The excellent microwave absorption is derived from properly interface polarization. The model of interface polarization in dielectric behaviors is proposed. The interface factor is found to be a key factor to balance interface polarization. The ultralight density 5.36mgcm. and strong absorption 76.59dB are achieved. |
S1385894719329547 | Metallic solid liquid phase change materials are crucial for the thermal energy storage technology of various industrial systems . However the encapsulation of metallic SLPCMs is still technically difficult . In this pursuit the present research envisaged the development of a novel technology to successfully prepare the core void shell Al | A novel core Al Si Bi void shell Al. composite PCM was successfully prepared. The Al Si alloy and Al. shell were in situ prepared by the displacement reaction. The void layer was formed by the evaporation of most of the outer Bi in Al Bi alloy. The thermal stability of Al Si Bi Al. was obviously improved due to the void layer. The Al Si Bi Al. possessed an adjustable thermal energy storage performance. |
S1385894719329559 | Pseudo capacitive materials have attracted great attention as electrode materials for supercapacitor owing to their high specific capacitance high energy densities and high rate capability . However performances of pseudo capacitive materials as transparent flexible supercapacitors are limited due to their non transparent characteristics and brittleness in nature . Herein we report a scalable low cost and opto electrochemical tunable high performance core shell Co | Fabrication of Ni mesh network transparent electrode using cracked silica templated. Growth of vertically aligned and intertwined Co OH. @Ni mesh network by electrodeposition. Co OH. @Ni mesh exhibit an area capacitance of 22.9mF cm. at 5mV s. Device demonstrates high energy density 0.42Wh cm. at 8.33W cm. power density. |
S1385894719329560 | Metal organic frameworks have been considered as the outstanding templates and precursors in synthesizing advanced cathode materials for supercapacitor . Herein a novel hierarchical structure with hollow Co | Waxberry like MnCo. Co. hierarchical electrodes are rationally constructed. This unique structure provides more abundant reaction sites for faradaic reaction. The MnCo. Co. electrode exhibits a high specific capacity of 1100.5Fg. The assembled MnCo. Co. AC supercapacitor achieves an excellent electrochemical property. |
S1385894719329572 | Lithium metal is considered as the ultimate anode for next generation rechargeable batteries due to its high theoretical specific capacity and low electrochemical potential . However the commercial application of lithium anode is hampered by its dendritic growth during the charging process resulted from the unstable lithium electrolyte interface . Herein we demonstrate the formation of a hybrid protective layer consists of Li | The hybrid artificial protective layer is fabricated by a facile method. Uniform plating of modified Li is confirmed by. optical microscopy study. The modified Li anode realizes long term stable cycling with minimal polarization. The modified anode exhibits much improved performance in full battery. |
S1385894719329584 | Biocompatible stimuli responsive intelligent and efficient drug delivery systems are essential for effectively suppressing cancer and reducing toxic side effects of chemotherapeutic drugs . Herein two strategies have been employed to develop a | Two functional polymer DOX bioconjugates based nano aggregates NAs were prepared. NAs displayed pH and enzyme responsive features and had excellent biocompatibility. NAs entered into 4T1 cells through multiple endocytosis pathways. NAs induced apoptosis by disrupting mitochondria function and actin cytoskeletons. PEGylation for NA improved anti tumor efficacy on 4T1 tumor bearing mice. |
S1385894719329596 | Self healing polymers have drawn significant attention because of their great potential for applications in many fields . It is highly desirable to prepare materials capable of self healing and with excellent mechanical properties . Additionally the flammability of polymers make them unsafe during use . A novel strategy is proposed to manufacture a multifunctional polyurethane elastomer with high tensile strength and excellent self healing efficiency containing a thermo reversible crosslinking network and multiple hydrogen interactions . The furan terminated phosphorus based monomer tri phosphoramide was successfully synthesized and then conjugated into a maleimide terminated linear segmented polyurethane backbone to prepare self healing recyclable and flame retarded polyurethane . Due to its synergetic dual reversible bonds the multifunctional polyurethane elastomer possessed ultrahigh strength and excellent self healing shape recovery and reprocessing properties . The phosphorus containing polyurethane elastomer exhibited improved thermal stability a limiting oxygen index value of 28.5 and a 12.3 decrease in the peak heat release rate relative to those of unmodified polyurethane . This work demonstrates an effective strategy to prepare multifunctional polyurethane elastomer with both high self healing efficiency and excellent mechanical properties allowing application for this material in the fields of fire control coatings and building materials . | The polyurethane elastomers with multiple functions were successfully prepared. The polyurethane elastomers showed ultrahigh strength and excellent self healing. The phosphorus in the network enhanced the flame retarded performance. |
S1385894719329626 | The growth of bubbles has been extensively studied for decades . However the bubbling inside a single drop on complex surfaces and its subsequent effects on drop are not well understood yet . A systematical investigating of bubbling mechanism in drops on customized microscale pore patterned surfaces is presented and the results demonstrate that drop behaviors can be controlled under low air pressure . As the pressure decreases the drop behaves via two approaches depending on the competition between the critical chamber pressure and the lower limit of pressure . When the former one is higher drop prefers to expand otherwise evaporation occurs . Further studies suggest that the drop expansion consists of two stages pinning mode and pinning to depinning transition . This work provides new insights in understanding of bubbling physics on complex patterned substrates opens a general route for the controlling of drop behaviors under low air pressure and can also find potential applications in optimization design for self cleaning patterned surface . | The two kinds of drop behavior under low air pressure were investigated. The critical air pressure for drop expansion was analyzed and experimentally verified. The bubbling mechanism on microscale patterned substrates was illustrated. Two stages of drop expansion driven by bubbling was demonstrated. |
S1385894719329638 | Solid state electrochemical energy storage devices have attracted tremendous attention because they are widely considered as the promising next generation energy power technology to overcome the current issues of low energy density and insecure safety in conventional liquid devices . The last decade we witnessed notable performance improvement on electrochemical energy storage through advances in understanding and design of advanced nanostructured materials . One could argue that inorganic materials have played a central starring role for the assembly of various electrochemical energy storage systems . However energy storage systems fabricated from organic polymer networks have just emerged as a new prospect . 3D polymer is a category of pure polymer or composites featuring three dimensional frameworks structure which could be potentially used in solid state electrochemical energy storage due to its high electron conductivity or ionic conductivity . Here we summarize the main research advances on the attractive use of 3D polymer networks for the fabrication of electrodes and electrolytes in either solid state supercapacitors or lithium ion batteries . Besides challenges of future development for 3D polymer networks have also been outlined . | 3D polymer applied in solid state energy storage has been comprehensively reviewed. The synthesis strategy and advantages of 3D polymer for SSCs and SSLIBs are presented. The modification motivation and properties of 3D polymer are stated very carefully. The challenges of future development for 3D polymer is also proposed in this review. |
S138589471932964X | Calcium oxide is recognized as a promising heterogeneous alkaline for transesterification . Nevertheless equivalent catalytic activity to that of homogeneous alkaline and catalyst stability especially the Ca | High effective and stable catalyst is synthesized by MIL 100 Fe and calcium acetate. Fe and CaFe. qualify CAM750 endowed with strong magnetism of 112emu g. Ca. Fe. and CaFe. are the predominant active sites for CAM750. Ca. is firmly anchored and metal concentration in biodiesel meet limit of EN 14214. |
S1385894719329651 | Decabromodiphenyl ether is a major brominated flame retardant released from plastics in thermal processing of e waste and there is a significant need for developing effective technologies for its destruction . This study reports a novel treatment for complete debromination and destruction of BDE 209 by adsorbing it onto porous minerals followed by microwave irradiation . Being highly hydrophobic BDE 209 could be sorbed efficiently by porous mineral sorbents with the density and type of surface cations of the sorbents apparently playing little role . Microwave irradiation caused rapid degradation of the BDE 209 sorbed on the porous minerals and the fastest degradation occurred on the microporous minerals with the density and type of surface cations present in the mineral micropores had significant impact on the degradation rate . Evolution of the degradation intermediates during the course of microwave irradiation indicates that the sorbed BDE 209 underwent pyrolytic decomposition involving a series of reactions including cleavage of the ether bond debromination hydroxylation ring cleavage and oxidation . Microwave induced degradation could cause full mineralization of the sorbed BDE 209 without producing lower brominated congeners which is supported by the results of density functional theory calculations and infrared spectra . Together these findings demonstrate that microporous mineral sorption coupled with microwave irradiation could be a rapid and efficient technology for destruction of BDE 209 and other polybrominated diphenyl ethers . | Highly hydrophobic BDE 209 sorbed efficiently on the porous minerals evaluated. Microwave irradiation caused rapid degradation of BDE 209 sorbed on porous minerals. Surface cations in mineral micropores greatly impacted degradation of sorbed BDE 209. Full debromination of sorbed BDE 209 occurred under continuous microwave irradiation. The treatment is promising for full destruction of BDE 209 and other PBDE congeners. |
S1385894719329663 | To facilitate the formation of bicomponent heterostructure here a novel strategy of surface group mediated nucleation reaction is developed to prepare carbon dots embedded BiPO | A green and energy efficient method of boosting heterostructure formation is presented. CDs BiPO. heterostructure shows excellent light absorption and photocatalytic activity. CDs not only act as electron donors but as trapping agent of photogenerated holes. The photoinduced electrons from the heterostructure can activate nitro compounds. |
S1385894719329675 | A novel multifunctional material of MOF derived porous carbon coated lanthanum oxide had been successfully synthesized by hydrothermal calcination method which used in the simultaneous removal of butylparaben and As . For the single contaminant system the degradation rate of BPB could reach 98 and retain a high removal efficiency in a wide pH range of 39 which covered the most wastewater . In contrast the removal rate of As reached 90 in the pH of 3 and still 70 of the As can be removed in the pH of 9 . For the BPB As binary system the presence of As had no obvious impact on the degradation rate of BPB . However the removal rate of As was suppressed at the presence of BPB because of the competitive reaction of radicals between BPB and As . O | A multifunctional material of La MOF 900 had been synthesized via calcining La MOF. La MOF 900 can remove BPB and As III by combining AOPs and adsorption. La MOF 900 exhibited a high removal rate of BPB and As III from pH 3 to 9. HO. and SO. were all involved in La MOF 900 PS system. |
S1385894719329687 | In order to increase the selectivity of graphene hydrogel for uranium and ensure its possible application in uranium extraction from complicated systems such as seawater and saline lake brines GH with amidoxime groups needs to be prepared . However it is not an easy task to grafting amidoxime groups on GH . At present work an innovative method is used to fabricate the amidoximated graphene hydrogel polyarylonitrile nanoparticle graphene composite hydrogel through simultaneously encapsulating polyacrylonitrile nanoparticles in hydrogel formation process and then amidoximation . The prepared adsorbent is characterized by scanning electron microscopy Fourier transform infrared spectroscopy X ray diffraction and BET specific surface area analyses . All the results prove that PAO GH with amidoxime groups is successfully obtained . The effects of initial solution pH ionic strength time and initial uranium concentration on uranium sorption by PAO GH are studied systematically and compared with the blank graphene hydrogel . The uranium selectivity of PAO GH increases obviously after introducing amidoxime groups . Moreover the mechanism of uranium sorption by PAO GH is also explored with different characterization methods . Amidoxime groups are revealed to be the main functional groups involved in uranium sorption by PAO GH and served as electron donor . Basis on the above results uranium extraction from natural saline lake brine by PAO GH is also performed and PAO GH is testified to be a promising adsorbent for recovering uranium from complicated systems . | PAO GH is prepared to enhance the uranium selectivity of graphene hydrogel . PAO GH is characterized by different methods. The uranium selectivity and sorption capacity of PAO GH increased obviously. Uranium sorption mechanism by PAO GH is revealed by various characterizations. PAO GH has relative high uranium sorption capacity in natural slain lake brine. |
S1385894719329717 | Permanganate bisulfite process is a novel advanced oxidation process for degradation of micro pollutants in water wastewater treatment . The abatements of iopamidol metribuzin and phenol by the PM BS process after 15s were 65 99 and 99 respectively while no obvious abatements were observed with PM or BS alone . These accelerated degradations by the PM BS process were attributed to the formations of Mn sulfur radical SO | DO governed removal of micro pollutants in PM BS process. Formed Mn III SO. and HO. contributed to the accelerated degradation. Mn III is the oxidation product of Mn II by SO. Actual DO consumption in the presence of micro pollutants is proposed 1.5 PM |
S1385894719329729 | Peroxymonosulfate is receiving increasing interest as an oxidant used during the disinfection of drinking water . However it does not have continuous disinfection ability as sodium hypochlorite does . PMS Cl | CX. R type DBP formation is compared between PMS Cl. and NaClO disinfection. CX. R type DBP level in PMS Cl. is lower than that in NaClO disinfection. DBP formation pathway during PMS Cl. disinfection is proposed. The cytotoxicity from DBPs in PMS Cl. is lower than that in NaClO disinfection. |
S1385894719329754 | In this study a comparison between electrochemically activated peroxomonosulfate and peroxydisulfate using carbon anodes was conducted for the first time . PMS activation was achieved using graphite and multi walled carbon nanotube anodes which significantly promoted the degradation of organic pollutants sulfamethoxazole . The radical probing and scavenging experiments demonstrated that SO | Electrochemically activated PMS significantly enhanced organic pollutants degradation. Compared with PDS electrochemically activated PMS was easier to generate SO. Electrochemically activated PMS exhibited strong resistance towards water background components. |
S1385894719329766 | Antibody separation and purification methodologies with high separation efficiency large adsorption capacity and high biological activity are challenging . In this study a novel high capacity temperature responsive affinity chromatography method was developed for antibody separation . With temperature responsive dendrimer polyamidoamine poly as the spacer arms and 4 mercapto ethyl pyridine as the ligand TRAC can not only be used to separate the antibody directly in response to temperature changes from 40C to 5C in an aqueous mobile phase at pH 8.0 but also at least two fold higher adsorption capacity of the antibody can be achieved compared with linear spacer arms . BSA and globulins can be separated completely using TRAC by performing adsorption at 40C and elution at 5C . The effect of temperature and the structure of TRAC stationary phases on the antibody separation were investigated and the mechanism of antibody separation by TRAC was discussed in detail . This new technology was employed for the separation of IgG and IgY from human serum and egg yolk and both the mass recoveries were found to above 90 with 98 purity . This novel methodology can overcome the previous negative effect of deactivation of the antibody by traditional harsh elution with low pH low adsorption capacity . It can preserve its biological activity and exhibit considerable potential for antibody separation in antibody drugs production . | A novel high capacity TRAC stationary phase was prepared with PAMAM PNIPAM as spacer arms and MEP as ligand. A novel high capacity TRAC methodology was developed and applied for antibody separation. Antibody separation is easy to performed using TRAC only by adjusting the temperature of aqueous mobile phase. The adsorption capacity of TRAC for antibody can be increased greatly using the PAMAM PNIPAM as spacer arms. |
S1385894719329778 | Nowadays combined photothermal therapy and imaging diagnosis based on nanotheranostic agents are attracting increasing interest in tumor therapy field . However facile synthesis approach and excellent biocompatibility of the nanoagents are highly desired but still remain a challenge . It is also difficult to eliminate the phototoxicity of the agent to normal tissues resulting from the lack of tumor targeting by traditional approaches . Herein a biosafe Gd integrated Dy nanoagent BSA Gd | The biocompatible BSA Gd. NPs were developed through biomimetic strategy. Gd and Dy were simultaneously doped into BSA to realize. MR CT imaging. The PDA coated and FA modified NPs performed high photothermal therapy efficiency. The NPs could eliminate the tumor and inhibit the tumor lung metastasis and recurrence. |
S138589471932978X | Cisplatin induced nephrotoxicity is highly correlated with reactive oxygen species overproduction which greatly limits its clinical therapeutic effects . Therefore identification of agents that are able to mitigate this effect has become an urgent need for cisplatin based cancer therapy . Herein tea polyphenol functionalized selenium nanoparticles | NPs has been synthesized to reverse cisplatin induced nephrotoxicity. Microwave assisted method is employed to enhance synthesis yield. NPs possesses potent antioxidant activities. NPs can be rapidly transformed into seleno amino acids. |
S1385894719329791 | In this work an efficient biocatalyst immobilized on magnetic nanoparticles modified by amino functionalized ionic liquid using dialdehyde starch as cross linker Fe | Laccase was loaded on a novel support using macromolecular crosslinking agent. Immobilized laccase was applied to phenolic compounds biodegradation. Immobilized laccase showed higher enzyme loading activity retention. Immobilized laccase displayed superior enzymatic properties. Immobilized laccase showed high biodegradation in a wider temperature and pH range. |
S1385894719329808 | Oil spills in the marine environment frequently reach the coastal zone where active cleanup strategies may become necessary if the rates of natural weathering and attenuation of the stranded oil are considered inadequate . The application of surface washing agents is an operational technique that enhances the separation and removal of oil that is adhered to solid surfaces . This article presents a comprehensive review of the current and emerging technologies to treat oiled shorelines using SWAs . The discussion includes a brief description of the characteristics of shoreline oiling and the current available techniques for shoreline treatment or cleanup . It summarizes the basics of surface washing toxicity issues associate with SWAs and state of the art efforts to date on oil removal using SWAs at both laboratory and field scales . The development trends of green SWAs for shoreline treatment are further introduced . Finally a new perspective on challenges and recommendations is provided for future research on the applicability and effectiveness of SWAs oiled shorelines . | Oil removal from shoreline is a main challenge in spill pollution control. There is an increase interest in the use of surface washing agents SWAs . This article reviewed the emerging shoreline cleanup technologies using SWAs. A good insight was provided into the performance of SWAs in oil removal. The state of the art and development trends of SWAs in cleanup were discussed. |
S138589471932981X | Conductive materials have been incorporated in anaerobic bioreactors to stimulate direct interspecies electron transfer a recently discovered microbial electron sharing network . Previous studies emphasized the significance of electrocatalytic features associated with DIET while research gaps are remaining in the understanding of how different operating temperatures and substrate variation will affect those electrochemical characteristics . Consequently this study examined various electrochemical features including biomass conductivity | Carbon fibers enhanced methanogenesis rates to different extends under 2055C. Electrocatalytic responses and microbial communities were examined. Both were affected by substrate and temperature variation. Electron transfer rates coincided with methanogenesis rates when fed ethanol. The results also suggested distinct temperature dependent DIET pathways. |
S1385894719329821 | Disc donut strippers are widely equipped in fluid catalytic cracking units of petroleum refineries . In this study circumferential gas solids flow heterogeneity in a disc donut catalyst stripper was investigated using both experimental and CFD simulation approaches . A four channel fiber optical densitometry was used to measure the radial gas solids profiles synchronously from four different circumferential angles . Computational particle fluid dynamics model was used to simulate the experimental stripper section . It was found in experiment that the circumferential gas solids distribution is highly heterogeneous throughout the disc donut stripper . Local gas bypassing existed under all the experimental conditions . The CPFD model successfully predicted gas bypassing and circumferential flow heterogeneity in the disc donut stripper . However previous two fluid model simulations on disc donut strippers using a single mean particle size can only predict axially symmetrical flow distribution . According to a series of sensitivity analyses it is shown that the consideration of particle size distribution is a possible key reason leading to the successful prediction of the circumferential flow heterogeneous by the CPFD model . | Highly circumferential flow heterogeneity identified in FCC disc donut strippers. CPFD model successfully predicted the observed circumferential flow heterogeneity. Distributions of unfluidized zones in disc donut strippers predicted successfully. Full spectrum of particle size distribution a possible key to CPFD models success. |
S1385894719329845 | This paper reported a dynamic model of bubble expansion for predicting the geometry of the entrapped bubble by considering the elasto vicsco plastic rheology properties of the yield stress fluid and the resistance caused by the ambient yielded region . The yielded region caused by the bubble expansion or collapse is obtained by the Von Mises criterion and the yielded region caused by the buoyancy is obtained by the experiment data . The model can predict the volume and the geometry of the entrapped bubbles in various fluid rheology properties and surface tension . By comparing the bubble geometries obtained from the model and the experiment the results show that the equivalent bubble radius error is less than 0.89 the discrepancies of the maximum width and length for the bubble are less than 4.86 and 3.50 . | A simplified model for predicting bubble shape in yield stress fluid is established. An experiment to observe shape and entrapment condition of bubbles in Yield stress fluid by reducing vessel pressure is carried out. The yielded region caused by buoyancy depends on liquid yield stress elasticity and bubble volume. |
S1385894719329857 | The identification of the best possible helical pipe geometry for optimal mixing is challenging since the two central objectives can not be reached simultaneously they lead to concurrent target functions . The present study identifies optimal configurations using multi objective optimization for the flow of two miscible liquids in helical pipes . A flow optimization library was used to automatically control the numerical simulations . The objective is to optimize the helical pipe dimensions maximizing mixing efficiency | Optimization was done to maximize mixing and minimize pressure drop in helical pipes. Using a fully automatized optimization code coupled with CFD simulations. All geometrical parameters of helical pipes were widely varied. The optimal range of Reynolds number between 20 and 60 was considered. Optimal configurations were obtained and a single global optimum was suggested. |
S1385894719329869 | By now magnetic porous carbon based composites have almost dominated recent development of electromagnetic wave absorbers . Herein we report on the fabrication of magnetic carbon foams via in situ polymerization of iron acetylacetonate | Magnetic porous graphitic carbon based foams are synthesized. Ultralight EMW absorbers with strong capacity broad frequency and thin thickness. The mechanism of the EMW absorption behavior has been discussed in depth. Effect of internal cell wall thickness on EMW absorption behavior is investigated. Effective adsorption from C to Ku band is achieved via adjusting absorber thickness. |
S1385894719329870 | Fine manipulation of fluid flows at the microscale has a tremendous impact on mass transport phenomena of chemical and biological processes inside microfluidic platforms . Fluid mixing in the laminar flow regime at low Reynolds number is poorly effective due to the inherently slow diffusive mechanism . As a strategy to enhance mixing and prompt mass transport here we focus on polyelectrolyte multilayer capsules embodying a catalytic polyoxometalate as microobjects to create elastic turbulence and as micromotors to generate chaotic flows by fuel fed propulsions . | Soft organic micromotors generate viscoelastic effects in microchannels. Mass transport in microchannels is enhanced thanks to viscoelastic effects. Mass transport during mixing improves using catalytic soft organic micromotors. A physical model of the experimental data is presented. |
S1385894719329882 | Maximization of the energy capability of energetic materials by organizing energetic moieties into dense arrangements is of great significance . In this study two novel high energy regioisomers 3 4bis furoxan and 3 4bis furoxan were synthesized by employing controllable synthetic strategy . The constitutional isomers were thoroughly characterized using multinuclear NMR and IR spectroscopy elemental analysis as well as single crystal X ray diffraction . Notably BFTF 1 shows the highest crystal density | Two novel high energy regioisomers are synthesized via ingenious construction strategy. A regioisomer exhibits the highest crystal density among CHNOF compounds reported thus far. The structure analysis shows how the. oxide position affects their densities. This study demonstrates regiochemical modulation could be a powerful tool to enhance the energetic properties. |
S1385894719329894 | The use of microreactors in catalytic processes offers new possibilities for studying and optimizing many mass and photon transfer limited reactions . In this study we propose a scalable computational fluid dynamics model for the prediction of photocatalytic degradation of a model pollutant using immobilized N doped TiO | Photocatalytic degradation of 4 nitrophenol in microreactor under solar irradiation. The used CFD model incorporates total recirculation mode of operation. The CFD model accounts for adsorption in the dark. The CFD model predicts experimental data in a wide range of reactant concentrations. |
S1385894719329900 | Membrane technology has gained great attention as one of the promising strategies for carbon capture and separation . Intended for such application membrane fabrication from various materials has been attempted . While gas separation membranes based on dense polymeric materials have been long developed there is a growing interest to use porous materials as the membrane material . This review then focuses on emerging organic containing microporous materials to be used for the fabrication of membranes that are designed for CO | Criteria in selecting microporous meterials for CO. separation membrane is given. The membrane fabrication based on MOFs POFs TR polymers and PIMs is summarized. The membrane performance in CO. separation under differents conditions is analyzed. The challenge and perspective for future development are pointed out. |
S1385894719329912 | Hard carbon is one of most promising anode materials used in sodium ion batteries because of its high low voltage plateau capacity . Heteroatom doping into the carbon structure is considered an effective method to enhance the Na | High temperature carbonization with low level heteroatom doping was developed. P doped carbon exhibited enhanced low voltage plateau capacity of 223mAhg. in SIBs. High reversible capacity of 328mAhg. with high ICE of 72 was achieved in SIBs. As an anode in KIBs high reversible capacity of 302mAhg. was achieved. |
S1385894719329936 | Toxic arsenic species cycle in the geochemical process are strongly influenced by iron and manganese elements thus understanding mutual transformation of multiple Fe Mn redox states is essential to predict the redox transformation and sequestration of arsenic in natural environment . Herein a nanosized magnetic mesoporous iron manganese bimetal oxides with highly well ordered inner connected structure and large surface area was fabricated the obtained Nanosized MMIM possessed higher content of surface bound | Magnetic Nanosized MMIM were successfully fabricated via the hard template method. Nanosized MMIM possessed highly well ordered inner connected structure and large surface area. Nanosized MMIM exhibited excellent catalytic performance for As III oxidation. Surface bound. Fe II content was greatly associated to the amount of. OH. radicals. As III was oxidized by bulk solution. OH. and surface bound. OH. radicals. |
S138589471932995X | A novel route to decompose glucose to 5 hydroxymethylfurfural in microreactors with the use of deep eutectic solvents was reported . For the catalytic mechanism synergistic effects between quaternary ammonium ionic liquids and inorganic salts on the dehydration of glucose to 5 HMF were revealed . Under the optimal reaction conditions CrCl | Continuous synthesis of 5 HMF in microreactors was realized with using DESs. Synergistic effects of applied ionic liquids and inorganic salts were revealed. CrCl. in tetraethyl ammonium chloride ethylene glycol presented high catalytic performance. A complete kinetic model for 5 HMF production through glucose dehydration was established. |
S1385894719329985 | The search for efficient cheap and robust sorbent materials which can effectively remove iodine compounds from off gas streams in used nuclear fuel reprocessing facilities is still challenging . Herein we report the development of bismuth doped mordenite zeolite with different loadings for removal of iodine 129 | Development of bismuth doped mordenite adsorbents with various bismuth loadings. Higher surface area and porosity for the bismuth modernite than that for bare mordenite. 2.5 fold increase in iodine capacity for bismuth modernite than that for bare mordenite. 36 of iodine release to water from the iodine loaded adsorbents. |
S1385894719330001 | Oil spills especially high viscous oil are a major environmental threat due to their high adhesive nature which can lead to the easy fouling of filtration membranes . Superhydrophilic membranes fabricated from bioinspired materials with superior wettability behavior are considered effective in removing soluble insoluble organic pollutants from water . For efficient antifouling and oil water separation materials designed using hydrogels forming species with low adhesive superoleophobicity may be more suitable however controlling the hydrogel thickness and the membrane pore size is difficult . Herein we report a simple approach to fabricate bio inspired underwater superoleophobic membranes via the treatment of hydrolyzed polyacrylonitrile membranes with naturally obtained carrageenan and a nanoclay laponite . A layer by layer deposition technique applied to yield self assembled membranes with nanosized pores high flux and efficient underwater superoleophobic properties along with high contact angles for oils due to the high surface functional groups . The laponite CGN modified membranes exhibited excellent adsorption of water soluble dyes with high stability and flexibility . Complete metal ion removal could be achieved from contaminated water by passing through a simple filtration process in addition to the removal of oils and soluble dyes . We believe that the reported modified membranes can serve as excellent candidates for underwater superoleophobic applications and removal of organic pollutants from water . | Efficient antifouling and oil water separation materials designed with superoleophobicity. Naturally obtained carrageenan and a nanoclay laponite used to fabricate membrane. Self assembled membranes exhibited pore size about 50nm. High flux underwater superoleophobic and high contact angles obtained. Metal ion also removed in addition to the removal of oils and soluble dyes. |
S1385894719330013 | While most papers focuses on catalysts improvement this paper is about a kinetic model based on a new reaction scheme to explain the transformation of ethanol acetaldehyde to butadiene and side products . The reaction scheme presented here is more complex than the route usually presented in the literature | Experimental butadiene production overTa. SiO. Development of a kinetic model for the conversion of ethanol into butadiene. Elaboration of two routes to explain butadiene formation. Elaboration of a reaction scheme for butadiene and side products. Very good agreement between experimental and simulated values for most components. |
S1385894719330025 | In the present study graphene oxide intercalated layered double hydroxide based adsorbent was synthesized for effective and selective adsorption of lead . Graphene oxide was intercalated in a controlled manner in the interlayer space of magnesium aluminium layered double hydroxide which enhanced the adsorption capacity by 20 compared to pristine LDH . Effect of metal ion ratio on GO intercalation was observed . The developed nano powder was immobilized in polyacrylonitrile beads by a single step mussel inspired phase inversion in dopamine solution . Elongated macro voids accelerated the lead adsorption kinetics remarkably . Phase inversion in dopamine eliminated the leaching of the nanoparticles from beads . The GO intercalated LDH and the nanoparticles immobilized beads showed lead adsorption capacity of 1062mg g and 209mg g respectively at 323K and pH 5.8 . Adsorption isotherm showed the best fitting with Langmuir model and kinetics followed a pseudo second order rate equation . Lead adsorption was not affected significantly by the presence of other cations like Ca | Tuning of intercalation of GO in interlayer of MgAl LDH has been demonstrated. GO intercalated MgAl LDH incorporated polymeric beads are prepared. Phase inversion in polydopamine restricts leaching of nanoparticles from beads. Polydopamine modifies bead morphology favoring lead adsorption. The composite bead exhibits superior selective adsorption for lead 209mg g . |
S1385894719330049 | Improving the stability of hybrid organic inorganic halide perovskite materials is urgent and essential for their applications in optoelectronic devices . Here we introduce | Reveal the behavior of BAI as guest molecule slicing PbI. precursor. Growth mechanism of 2D 3D perovskite via two step process was discussed in detail. Stability and efficiency of MAPbI. perovskite solar cells were efficiently improved. |
S1385894719330050 | Understanding interactions between constituent distributions and reactive transport processes in catalyst layer of proton exchange membrane fuel cell is crucial for improving cell performance and reducing cell cost . In this study high resolution porous structures of cathode CL are reconstructed where all the constituents in CLs are resolved . A pore scale model based on the lattice Boltzmann method is developed for oxygen diffusion in pores and ionomer as well as electrochemical reaction at the Pt surfaces . Particularly the model considers the pore ionomer interfacial transport processes with distinct characteristics of sharp concentration drop large diffusivity ratio and interfacial dissolution reaction . After validated by interfacial transport processes with analytical solutions the pore scale model is applied to reactive transport processes inside complex CL nanoscale structures . Pore scale results reveal that pore ionomer interfacial transport processes generate extremely high local transport resistance significantly reducing the total reaction rate . As volume fraction of carbon increases the value of the optimum ionomer content generating the best cell performance decreases while the value of the optimum ionomer content resulting in the lowest performance loss under low Pt loading reduces . The two values generally are different . The pore scale model helps to understand reactive transport processes and to optimize the CL structures . | Pore scale reactive transport processes in catalyst layer are numerically studied. High resolution porous structures of multiphase catalyst layer are reconstructed. Complex pore ionomer interfacial reactive transport processes are considered. Optimum ionomer content generating best cell performance is evaluated. Optimum ionomer content maintaining performance under low Pt loading is assessed. |
S1385894719330062 | Conjugated microporous polymers have gained great attention because of high surface area and permanent pores with good gas adsorption capability but most of them are hard to disperse in water and thus barely used in sewage disposal . Herein we adopt sulfonation to post synthesis sulfonate grafted CMPs which possess unexceptional dispersity in water . The sulfonate grafted CMPs also exhibit fast adsorption towards cationic dye solutions especially methylene blue . Because of the porous structure MB molecules interact with CMPs not only on the surface but also in pores increasing the contact sites and adsorption efficiency . This research greatly expands the exploration and application scope of CMPs . | Sulfonate grafted CMPs exhibit fast adsorption capacity on aqueous dyes. The maximum adsorption of sulfonate grafted CMPs on cationic dyes reaches 1650mg g. Sulfonate grafted CMPs absorb 97 of MB 100mg L in 25min. |
S1385894719330074 | Colorimetric methods for Fe determination based on complexation of heterocyclic amines such as phenanthroline and ferrozine have been widely used for analysis of iron species in solution which is critical to discuss the mechanism of Fenton and related reaction systems . However the reliability of both methods in the background of hydrogen peroxide has never been addressed . In this study we demonstrate that serious Fe overestimation possibly occurs for both methods in Fenton systems particularly for the Phen method . A systematic variation of incubation conditions reveals that the available Fe concentration depends greatly on the incubation time after mixing the colorimetric reagents with the sample . Also it is highly sensitive to pH and temperature as well as the initial concentrations of Fe H | Fe II in Fenton systems could be overestimated by classical colorimetric methods. Phen and FZ accelerate Fe III reduction by H. The addition NH. F could improve the stability and accuracy of both protocols. |
S1385894719330098 | Although rechargeable Al batteries attract interests due to their features of abundant Al source and high safety the Al negative electrodes suffer from critical problems including dendrite corrosion pulverization non recyclable Al wastes etc . For addressing these challenges here a novel liquid gallium is demonstrated for negative electrodes of Al batteries . The results show that the liquid gallium negative electrode enables the reversible alloying dealloying between Al and Ga . Remarkably the essential problems in the solid Al negative electrodes including dendrite corrosion and pulverization would be well avoided attributed to the liquid state of the Ga electrode during cycling . In addition to the enhanced stable cycling performance Ga negative electrode is also recyclable allowing the cycled Ga for further presenting stable cycling in the re assembled batteries and which is helpful for its practical application . The results in the present work open a precedent way to develop the advanced negative electrode with dendrite free corrosion resistant and recyclable features and advantages for various types of rechargeable batteries . | Liquid gallium is firstly used as the negative electrode for Al ion batteries. The Al storage mechanism i.e. the reversible alloying dealloying has been demonstrated. This liquid Ga negative electrode shows no dendrite and no corrosion merits during repeated cycling. No pulverization problem appears after long term cycling. This liquid Ga negative electrode is recyclable. |
S1385894719330104 | Recently lithiumsulfur batteries achieve incredible research interest owing to outstanding theoretical storage capacity abundant resources economical and ecological affability . Nonetheless the real usage of LS battery obstructs by shuttling effect of soluble lithium based polysulfides that result in languid redox reactions while the vital diffusion and migration mechanism of Li and S onto TiN surface is yet a myth . Herein rational synthesis of titanium nitride nanoparticles and sulfur composite | Facile hot to cold synthesis of TiN and S nanoparticles composite as cathode materials. DFT based calculation of diffusion barrier for TiN for Li and S. Experimental Li S battery outstanding performances. Short diffusion pathways charge density distribution and charge transfer attribution. |
S1385894719330116 | High theoretical specific capacity good electrical conductivity intrinsically stable metallic nature excellent thermal stability and corrosion resistance enable vanadium carbide as a promising anode material for sodium ion and lithium ion batteries . However drastic structural change during cycling and poor electrochemical kinetic performance both make the application of VC in dilemma . Herein VC nanodots were successfully embedded in N and P co doped carbon nanosheets via a simple wet chemical process followed by high temperature calcination . Benefiting from the carbon based conductive network and supporting structure for the rapid ion transport and alleviative volume change in VC the | A novel anode material of vanadium. P co doped carbon nanosheet was prepared. This anode showed excellent electrochemical performances in lithium and sodium ion batteries. Working mechanisms of this anode in lithium and sodium ion batteries were revealed. |
S138589471933013X | Titanium dioxide recently gained attention as sodium ion battery anode material . However its practical application is hindered by low specific capacity and mediocre cycling stability . Here we report for the first time nanointerface driven Na ion intercalation pseudocapacitance tuning as a strategy to substantially improve the performance of TiO | Nanointerface driven pseudocapacitance boosted Na ion storage performance. Anatase bronze nanointerfaces resulted Na ion intercalation pseudocapacitance. Hybrid TiO. anode exhibited 12 fold higher pseudocapacitancethan previous reports. This strategy provides new opportunitiesto design advanced Na ion battery anodes. |
S1385894719330177 | The performances of a photocatalyst in volatile organic compound adsorption photon harvesting and charge separation largely determine its VOC mineralization efficiency . To simultaneously optimize these properties this work constructed a hollow heterophase junction by coating anatase TiO | Anatase TiO. hollow spheres were coated with porous amorphous TiO. The content of micropores and mesopores was greatly increased. The formed heterophase junction redshifted the light absorption edge. The formed heterophase junction enhanced the charge separation. Mineralization efficiency of toluene and acetone was significantly improved. |
S1385894719330190 | In this study composite CoMgFe LDO catalyst was synthesized from layered double hydroxides precursor and tested as a heterogeneous catalyst to activate peroxymonosulfate for carbamazepine degradation . X ray powder diffraction scanning electron microscope energy dispersive spectrometer and X ray photoelectron spectroscopy were used to characterize CoMgFe LDO . CoMgFe LDO exhibited much better catalytic performance than the control catalysts . Operational parameters of CoMgFe LDO dosage PMS dosage initial solution pH and initial CBZ concentration on the degradation efficiency were investigated . Complete removal of 5mg L CBZ was achieved with 20mg L CoMgFe LDO and 0.2mM PMS at pH 5.8 in 20min reaction time . Meanwhile the inorganic anions effects in the CoMgFe LDO PMS system for CBZ removal and the catalytic stability were also studied . The radical scavenging experiments confirmed that both SO | CoMgFe LDO PMS system possessed excellent catalytic performance for CBZ degradation. Characterization catalytic efficiency and recyclability of CoMgFe LDO were investigated. The catalytic mechanism of CoMgFe LDO PMS system was proposed. The possible degradation pathways of CBZ were proposed. |
S1385894719330207 | Biochar was mixed with natural pyrite to catalyze the Fenton like oxidation of herbicide 2 4 dichlorophenoxyacetic acid so as to accelerate the degradation reaction . The accelerating effects of two biochars with different adsorption capacities were compared . The biochars functions on accelerating the oxidation were investigated by using radical scavengers electron spin resonance and the chemical probe method . The results indicated that the rate constant | Biochar accelerated 2 4 D degradation using pyrite as the Fenton like catalyst. Biochar increased the production of. OH in the Fenton like system. The mechanism related to the increased production of. OH was investigated. The Fenton like oxidation of 2 4 dichlorophenol was also accelerated by biochar. |
S1385894719330256 | Adsorption using monolithic adsorbents is an attractive emerging technology for water treatment but it still remains a great challenge to facilely combine microscopically a well developed surface functionality with a macroscopic architecture . In this work we reported a simple low cost and effective method for constructing uniform coating of crosslinked polyethyleneimine on monolithic melamine sponge through pre modification with polydopamine followed by a rotary evaporation driven crosslinkingsurface deposition process . Due to the amine groups rich surface and highly open porous structure the resulting monolithic adsorbent | Crosslinked polyethyleneimines were nearly perfectly coated on melamine sponge. The present method was simple cost saving and suitable for scalable production. The resulting. MS exhibited excellent structural flexibility and stability. MS was highly efficient for batch and column adsorption of Pb II and AR18. MS was a reusable adsorbent and the adsorption mechanism was elucidated. |
S1385894719330268 | A distinctive catalyst R N Fe was synthesized by anchoring iron phthalocyanine covalently on chloromethylated polystyrene beads which were pre functionalized by 4 aminopyridine . Herein pyridyl groups grafted on resins act as the axial fifth ligands to coordinate with FePc molecules . The obtained catalyst was characterized using N | FePc molecules was successfully immobilized on polystyrene resins to obtain a bioinspired catalyst. Pyridyl groups grafted on resins served as the axial fifth ligands to coordinate with FePc. SO. and. OH species played the main role in the presence of PMS. Possible mechanisms were proposed to explain the catalytic performance in PMS activation for TCH degradation. |
S138589471933027X | The development of simple and effective approaches for the synthesis of bimetallic oxide heterojunction photocatalyst which are used to activate peroxymonosulfate under visible light driven is highly feasible but remains a great challenge . In this work the Co | Novel highly efficient visible light driven photocatalytic system Co. CeO. PMS is prepared. 87.8 of CIP could be removed within 50min visible illumination. The addition of PMS produced the synergetic effect in Co. CeO. photocatalytic system. A plausible degradation pathway for CIP was proposed. The in depth mechanisms insight of charge separation. |
S1385894719330281 | Lithium nitrate has been highlighted as a high temperature phase change material with the melting temperature of 256C for the applications of thermal energy storage . However low thermal conductivity and corrosive property of lithium nitrate needs to be improved for wide applications . This report experimentally investigates thermal properties of a phase change composite consisting of lithium nitrate and porous copper oxide nanowires integrated on folded meshes . Specifically porous copper oxide nanowires vertically aligned on the folded copper meshes with desired shapes are synthesized by carrying out chemical solution growth and subsequent heat treatment . Then lithium nitrate is infiltrated in the network of the thermal conductive fillers under vacuum conditions . Our platform can provide a flexible geometrical configuration to enhance thermal performance by modifying the folded geometries to the target objects . As a result the fabricated phase change composites with 7vol of filling materials exhibit the 6.7 times higher thermal conductivities than pure lithium nitrate showing the excellent thermal transport by the fillers in the composite . Moreover the porous copper oxide nanowires exhibit excellent anti corrosive properties to lithium nitrate for stable operation under repeated phase change processes . Finally the phase change composite heat storages exhibit the 1.3 times faster thermal charging and discharging characteristics than pure lithium nitrate ones . | High thermal conductive lithium nitrate phase change composite was fabricated. Porous CuO nanowires on the folded Cu meshes were utilized as scaffolds. 6.7 times higher thermal conductivities were achieved with 7vol filler materials. 1.3 times higher heat charging and discharging rates were monitored in heat storage. |
S1385894719330293 | The present study reports the formation of alumina based inorganic layer via soft plasma discharges for optimizing chemical stability and catalytic activity together . Alkaline silicate electrolyte with complexing agent is formulated to soften the destructive nature of plasma discharges in water . The presence of complexing agent having large denticity activates the swarms of soft plasma events resulting in a less porous architecture than that with simple structure due to a homogenization of electrical field . Accordingly such inorganic layer comprises stable aluminosilicate since chemical transformations are facilitated to a greater extent by soft plasma discharges . The conformal inorganic layer in the present work demonstrates protective and catalytic features together on account of a synergy between compact microstructure and dynamic surface topography caused by residual tracks of plasma discharges . The reformation of electrical double layer after disruptive events which underlines the formation of soft plasma discharges is discussed on the basis of quantum chemical calculation and impedance analysis . | Destructive nature of high energy plasma in water is controlled by modulating EDL. Porosity of Al. based inorganic layer is adjustable by soft plasma discharges. Corrosion is delayed by aluminosilicate compounds with compact structure. Catalytic activity towards organic dye is enabled via homolytic cleavage of H. An optimum combination of chemical stability and catalytic activity is achieved. |
S138589471933030X | Micro fluidized bed technology is a newly emerging technique that is receiving increasing interest for various industrial applications . MFB is generally characterized by the use of inner diameters | Hydrodynamic diagnosis from large to micro fluidized beds is performed. Time frequency analysis of PFS is firstly used to monitor fluidization of MFB. Five regimes from fixed bed to turbulent fluidization are identified in MFBs. and. are increased while. is decreased with reducing |
S1385894719330323 | Herein a novel mountain soursop seeds powder adsorbent was employed to explore the adsorption mechanism of two relevant environmental pollutants crystal violet CV and methylene blue MB . As a first assessment to investigate the adsorption mechanism and to analyze the performance of this adsorbent the dye adsorption isotherms were measured at 298328K and pH 8 . Experimental results demonstrated that this adsorbent was more effective to remove the CV dye compared to MB dye from aqueous solution thus concluding that it could utilized for the treatment of dye polluted industrial effluents . To further interpret the adsorption mechanism and to obtain a new physicochemical vision a successful phenomenological theoretical analysis via double layer adsorption model was detailed in this paper . At high equilibrium concentration the adsorbed quantities at saturation were calculated and they followed this sequence Q | Preparation and characterization of a novel adsorbent for dyes adsorption. The adsorption was performed via a mixed orientation. Chracterization of the dyes adsorption mechanism via adsorption energy. |
S1385894719330347 | Most of present studies are focusing on improving cancer therapy effect by synthesizing new carriers or drugs while little attention is paid to develop new drug loading patterns and improve the efficiency . Herein a novel and smart nanosystem that not only realized targeted delivery and responsive degradation but also achieved facilely visual drug loading and release was reported for the first time . To build this system highly fluorescent carbon quantum dots were synthesized and served as an effective indicator and carrier to achieve visual doxorubicin loading by the strong fluorescence resonance energy transfer interactions between them . Biodegradable nano MnO | A novel and smart nanosystem realizing drug visual loading was reported. Targeted delivery responsive biodegradation and drug release were achieved. The first experimental example to treat cancer migration with MnO. was reported. Both in vitro and in vivo experiments confirmed excellent cancer therapy effect. |
S1385894719330360 | The use of intumescent flame retardant coatings is one of the most highly effective methods for polymeric materials to improve their fire safety . However organic IFR coatings show negative effect in a large amount of heat and smoke release during the char forming process . Developing nanocomposite coatings that can reduce their negative effect and simultaneously enhance the barrier effect of fireproof char layer is particularly desirable . Herein a novel UV curable IFR MXene nanocomposite coating was developed by incorporation of surface modified MXene nanosheets in the IFR coating system and then constructed on the surface of rigid polyurethane foam to fabricate coated RPU foams via spray coating and UV cured process . The IFR MXene coated RPU foams show a fast self extinguished behavior and a remarked decrease in heat and smoke production indicating the great improvement of RPU fire safety in building . The fireproof layers combined with expanded char and MXene jammed networks generated rapidly during combustion can serve as physical shield to effectively delay the release of heat and volatile products protecting the underlying substrate from further burning . Moreover the mechanical properties and dispersion are enhanced due to the co cross linking networks between the IFR coating and MXene nanosheets . As a new member of the 2D nanomaterials MXene nanosheets have potential to be a new choice for developing high performance nanocomposite coating for polymers to reduce their risk of fire hazard . | Modified MXene is dispersed well in coating due to the co cross linking networks. MXene efficiently enhances the flame retardancy via barrier and catalytic effects. Coated RPU foams show fast self extinguished behavior and smoke suppression. Thermal induced insulating fireproof layers are rapidly formed against the fire. |
S1385894719330384 | A major challenge for effective decontamination of arsenate from aqueous solution is the development of adsorbent possessing enormous high active sites with strong affinity to realize both high adsorption capacity and reduction of arsenate down to permissive levels . Here we demonstrate that this challenge may be overcome by doping Mn atoms into La | Mn doped La. CO. MnL exhibited superior arsenate capture capacity of 555.6mg g. The residual of As V was well below the permissive value for drinking water. Doping with Mn atoms enhanced adsorption sites and reduced adsorption energy. Surface complex and anion exchange dominated As V removal at low As V MnL ratios. Forming LaAsO. precipitates contributed greatly at high As V MnL ratios. |
S1385894719330396 | Aromatic organoarsenic compounds are widely used as animal feed additives worldwide . Their concentration in waters is often much lower than the ubiquitous anions or natural organic matters | exhibited selective adsorption towards. ASA over the ubiquitous anions. Humic acid exerted negligible influence on. ASA removal due to size exclusion. was fully refreshed for repeated use without loss in adsorption efficiency. produced 680bedvolume clean water successively in column adsorption. |
S1385894719330402 | Microbial protein can alleviate the increasing pressure of food demand on agriculture and our environment . For its sustainable production feedstocks such as biomethane or hydrogen are needed . Here we coupled biogas produced from agricultural waste directly with electrochemical biogas upgrading to subsequently produce MP from methane hydrogen or a mixture thereof . Biogas was produced from co digestion of pumpkin and pig manure at production rates of 0.730.24 L | Electrochemical upgraded biogas was used for microbial protein production. CO. and CH. were used simultaneously as carbon sources in mixed cultures. Upgraded cathode off gas generates more microbial protein than raw biogas. |
S1385894719330414 | An enhanced hydrolysis process has been proposed as a promising pretreatment method for removing high concentrations of antibiotics from production wastewater . Herein the prediction of hydrolysis efficiency and reactive moieties of 14 fermentative antibiotics belonging to six classes were investigated at 85C under different pH conditions . Eight antibiotics could be hydrolyzed at 85C within 1h . A semi empirical prediction tool using the parameterized model number 3 method was established by making correlations between the enhanced hydrolysis efficiency and E the energy gap between the lowest unoccupied and highest occupied molecular orbitals E | Energy gap of antibiotics was one of the key factors to predict hydrolysis potential. Some hydrolysis moieties were related to the active antibacterial groups of antibiotics. Enhanced hydrolysis could remove antibacterial activity in wastewater. |
S1385894719330426 | Oxygen and reactive oxygen species produced during algal photosynthesis are important electron acceptors in photosynthetic algal microbial fuel cell cathodes . In this study spongy and petaline ZnO | The optimal Zn to Ni molar ratio for fabricating. cathodes is 0.2. carbon felt cathodes have a higher surface area than carbon felt. P n heterojunctions in. cathodes increases oxygen adsorption. ROS adsorption capacity can be an evaluation indicator for PAMFC cathodes. |
S1385894719330438 | In the electrocoagulation process of the heavy metal wastewater treatment the acquisition of the heavy metal ions concentration at outlet requires long term analysis resulting in delayed control of the process and many other continuing problems . This study focuses on establishing the prediction model of heavy metal ions concentration for electrocoagulation process . Based on the mechanistic analysis of the electrode reaction and the adsorption kinetics a novel kinetics model of the electrocoagulation process is proposed . Then an industrial condition classification and equalization method as well as a metaheuristic method named state transition algorithm are introduced to optimize the unknown model parameters . After that a data based ANNs ARIMA model is applied to compensate the errors to overcome the shortcomings of the kinetics model caused by the industrial process uncertainties . Finally an integrated prediction model of heavy metal ion concentration is established by connecting the kinetics model and the compensation model in parallel . All the experimental results showed that the predicted values of the kinetics model roughly agree with the actual industrial data but the prediction accuracy of integrated model reaches to 90 and the mean relative errors is within | A novel kinetics model of the electrocoagulation process is established. Parameters optimization method is proposed to optimize the unknown parameters. Data based ANNs ARIMA model is applied to compensate the kinetics model errors. The proposed models are verified based on the actual industrial process data. |
S1385894719330451 | There are increasing demands for self healing anti corrosion coatings with high efficiency and durability in various industrial applications . Recently eumelanin polymers especially polydopamine based nanostructures have been served as a mussel inspired strategy to provide such requirements due to the intrinsic adhesive nature of amines and catechols along with its film forming ability . Nevertheless direct embedment of hydrophilic PDA nanoparticles into polymer coatings could eventually trigger corrosion as a consequence of the osmotic pressure exerted beneath the coating . In the present work we have adopted a rational design for constructing robust self healing epoxy composites | PDA Zn complex nanospheres were tailored on the graphene oxide sheets. PDA and Zn II reduced the corrosion rate of both cathodic and anodic reactions. GO PDA Zn nanocomposites exhibited excellent ion capturing releasing properties. GO PDA Zn EP showed robust self healing anti corrosion properties. |
S1385894719330463 | Black phosphorus is a new two dimensional material with attractive nanoscale chemical and physical properties . Herein black phosphorus dotted with silver nanoparticles was synthesized via a facile and in suit chemical reduction approach without reductant . The tribological properties of as prepared Ag BP nanocomposite as lubricant additive in poly alpha olefin based oil were investigated by a ball on disc tribometer . The results demonstrate that the oil dispersed with trace amount of Ag BP nanoadditives shows excellent lubricating performance for the steel steel contact . The friction coefficient and wear rate of the oil dispersed with 0.075wt Ag BP nanoadditives are reduced by 73.4 and 92.0 respectively as compared to the based PAO6 oil . The possible friction reducing and anti wear mechanisms of Ag BP nanoadditives in oil are illustrated by analyzing the wear scar surfaces . During scratching the Ag BP nanomaterials serves not only as a friction reducing and anti wear additive but also as a catalyst to decompose the based PAO oil for forming a carbon based tribofilm under ambient condition that further reduces the friction and wear . The findings here provide a novel insight into the design of lubricant additive incorporated in base oil and suggests a new potential application of black phosphorus in lubrication and tribology . | Black phosphorus dotted with Ag nanoparticles is synthesized by a facial and in suit chemical reduction approach. The nanocomposite of Ag BP is an excellent lubricant additive achieving ultralow friction and excellent wear resistance. Ag BP can act as a catalyst to decompose the base PAO oil forming a carbon based tribofilm during rubbing process. The formed tribofilm consisting of BP and amorphous carbon corresponds to the superior lubricating ability of Ag BP. |
S1385894719330475 | The selective aerobic oxygenation of organic sulfides under mild conditions represents one of the most important chemical transformations because of a wide variety of applications of sulfoxides . However this reaction is very challenging to be implemented by conventional semiconductor photocatalysis . Herein polydopamine could be easily assembled onto TiO | TiO. surface complex photocatalysis can carry out a reaction in a redox active solvent. Turnover number in terms of dopamine precursor can be as large as 275. Visible light photocatalytic selective aerobic oxidation of sulfides into sulfoxides has been achieved on TiO. @PDA. TEMPO could improve the endurance of TiO. @PDA photocatalyst. The electron transfer between TEMPO and TEMPO. accelerates the formation of sulfoxides. |
S1385894719330487 | Humic acid can affect the adsorption modes of CLDHs and change the form of pollutants making it a key factor when considering CLDHs for practical applications . However the complicated and uncertain structures of HA make it difficult to explore how they will influence the mechanism so using simple compounds to simulate the role of different reactive groups in HA necessary to understand how they will interact with the application of CLDHs . It was found that both CLDHs strongly adsorb phthalic acid and catechol . All hydroxyl and carboxyl compounds had a similar promoting effect on the adsorption rate and regeneration rate of Mg CLDH which were not affected by the number of functional groups the length of the aliphatic chain or the number of the aromatic ring . However their effects were more significant than that of the HA . While they could make the structure of Mg LDH stacked and incomplete just like the HA they did not damage the crystallinity . In particular catechol inhibited the regeneration of Mg CLDH to a certain degree . Since the regeneration process was different from Mg CLDH different types of hydroxyl or carboxyl compounds degraded the removal of borate by Ca CLDH but promoted the formation of ettringite to some extent especially benzoic acid and 4 phenylbutyric acid . However catechol severely inhibited the structural transformation of Ca CLDH into ettringite . Due to the strong interaction of the HA with the surface of Ca LDH the formation of ettringite was hindered which deteriorated the removal of borate . HA did change the adsorption rate and the regeneration process of CLDHs via different reactive groups and their effects on various CLDHs were different . | Seven compounds were selected to simulate the effect of HA on CLDHs adsorption. Models promote the adsorption and regeneration of Mg CLDH but destroy the morphology. Models inhibit the sorption of Ca CLDH but no inhibition of structural transformation. The effect of model is different from HA the inhibition of HA is stronger. |
S1385894719330499 | Removing gaseous formaldehyde using photocatalyst oxidation is of great interest . Herein a photocatalytic fuel cell with a rotating photoanode was proposed for gaseous HCHO degradation with the features of efficient absorption fast oxidation and humidity less sensitivity . The results indicated that the as fabricated rotating PFC system can facilitate the absorption of gaseous HCHO in the thin liquid film formed on the upper anode surface and have an efficient separation of the photoinduced electron hole pairs on the TiO | A rotating PFC system with high capacity for gaseous HCHO adsorption was proposed. The rotating PFC system displayed an excellent gaseous HCHO degradation capacity. The system exhibited less sensitive on ambient humidity. Degradation of gaseous HCHO was concurrently achieved with energy recovery. A liquid film air purifier was designed and a good performance was obtained. |
S1385894719330530 | The overuse of refractory antibiotics in animal husbandry has caused serious aqueous environment pollution . Polymeric carbon nitride based photocatalysis a promising method to address antibiotic pollution issues has encountered with restricted efficiency because of the sluggish charge transfer and unexploited water matrices influence . In this study an efficient metal to ligand charge transfer was successfully implanted into the Cu coordinately polymeric carbon nitride framework via the bonds of coordinated Cu with organic N and few inorganic O atoms . The Cu CNF photocatalysts were endowed with high efficient chlortetracycline hydrochloride removal in deionized water . To insure the feasibility of the Cu CNF in antibiotics removal from different water matrices a systematical exploration covering the reaction kinetics the physicochemical stability and the influence of specific water matrices on CTC HCl removal was carried out by various ways . Results showed that the photo induced MLCT route with shorter transfer distance was able to broaden light absorption of CN in the whole visible region contributing to more available excitons and accelerating separation of the photoexcited electron hole pairs . The boosted active oxidative species h | Cu CNF with the efficient MLCTs exhibits enhanced photocatalytic efficiency. Visible light absorption and exciton dissociation are intensified in Cu CNF. The C Cl and C N C moiety of CTC HCl are initially attacked in degradation process. NO. N and NH. N restrain the removal efficiency of CTC HCl in the swine wastewater. Organic matter in natural water leads to the decreased CTC HCl removal efficiency. |
S1385894719330542 | A promising strategy to treat wastewater containing heavy metal complexes is to employ oxidation processes before carrying out the conventional processes . Metal ion catalyzed oxidation processes have been confirmed to be suitable for the remediation of wastewater . However the treatment of HMCs by MICOPs has seldom attracted researchers attention and the key mechanisms remain unclear . In this study Cu | Efficiency of various oxidation processes in Cu. EDTA decomplexation is evaluated. Co. peroxymonosulfate PMS performed the best among tested oxidation processes. Decomplexation mechanism of Cu. EDTA by Co. PMS is discussed. |
S1385894719330554 | Perfluorooctanoic acid is a persistent and bioaccumulative refractory organic pollutant which has aroused great concern on its environmental fate . Herein inspired by biomimetic materials a preeminent heterogeneous catalyst iron porphyrin loaded biochar BC was constructed to activate persulfate for PFOA degradation . Moreover the existence of persistent free radicals on biochar could transfer electrons to iron porphyrin and PS to directly or indirectly speed up the generation of SO | Inspired by biomimetic materials a heterogeneous catalyst was constructed based on iron porphyrin loaded biochar. The system degraded PFOA rapidly and effectively and the degradation pathways and reaction mechanism were proposed. The system could maintain the efficient degradation under original strong acidic conditions without pH adjustment. |
S1385894719330578 | The amide condensation reaction is crucial for preparing biological probes with a polypeptide backbone . The traditional condensation reaction requires the monomer and condensing agent to be pre mixed and activated by physical agitation mixing which entail long time require many reagents and yield several by products . In microfluidic mixing devices the high specific surface area of microchannel enables traditional chemical reactions to be accomplished efficiently and quickly using only trace amounts of reagents in real time . This paper presents a serpentine mixing channel for the activation of amino acid monomers . A number of outward convex elliptical structures are introduced to both sides of the improved serpentine microchannel creating a Dean vortex that increases the mixing efficiency at low Reynolds condition 90 at | A novel square wave micromixer is designed through introducing sidewall grooves. Mixing is significantly improved at low. with the proposed mixer 90 at. 40 . The proposed micromixer is successfully used as a microreactor for carboxylic acid activation. synthesis of polypeptide array demonstrates the practicability of the micromixer. |
S138589471933058X | EulerianLagrangian numerical scheme is applied for analysing packed bed structure constructions involving non spherical solids such as metallurgical cokes and ferrous ores and the high temperature softening characteristics of such beds . 3D scanning is applied for determining the coke and ore shapes and a multi sphere discrete element method is used as the functional scheme for non spherical solid particle motion tracking . The transient deformation behaviour of the softening ore is simulated using the advanced discrete element method and the gas permeability characteristics exhibited by the ore shapes in the ironmaking process are discussed . Based on this model cases with varied softening behaviour represented by the joint spring coefficient are investigated and the effect of the ore softening behaviour on the gas permeability is evaluated . It is established that the pathway of the passing rivulet depends upon the softening ore deformation behaviour . | New 3D dynamic model for a packed structure with coke and ore is proposed. It can predict the packed bed permeability even with softening ore. Gas permeability characteristics of ore layer shapes in ironmaking process discussed. The local pressure drop was estimated from the geometrical data of softening packed bed structure. The formation of ineffective voids in the gas flow path increase the local pressure drop. |
S1385894719330591 | Improving the conductivity stability of flexible conductors has a positive impact on the working performance and service life of portable electronic devices . However designing a conductor material with both conductivity stable and flexible performance is still not an easy task because of the conductive network damage under large deformation or high humidity conditions . Here we surmount this challenge by developing an interfacial assembly encapsulation integration strategy for the construction of flexible transparent and conductivity stable film . Under the synergistic effect of coordination complexation and hydrogen bonding silver nanowires are sandwiched encapsulated by regenerated cellulose film and poly poly nanosheets . The resulting hybrid film has a robust interfacial structure and prominently stable properties . Even when subjected to harsh condition such as a high moisture environment of 90 relative humidity and 65C temperature for up to 60days repeated bending for 500 times peeling over 400 times or soaking in water for 30days the film still exhibits a high and stable conductivity better than most previously reported values for AgNWs based films . With this strategy as base we demonstrate a flexible transparent and biocompatible strain to electricity sensor with high working stability and performance . | Flexible and transparent conductor film was assembled via an integration strategy. The CRC film exhibited super stable conductivity even in harsh environments. The CRC film based strain sensor was demonstrated. |
S1385894719330608 | Self healable and stretchable electrolytes are extremely desirable for next generation flexible energy storage devices . Nevertheless most of previously reported autonomous self healing electrolytes possess only moderate mechanical strength and recoverability as well as poor ionic conductivity and low operating voltage window . In this work a type of ionogel electrolytes is reported on the basis of a dual dynamic network composed of metal ligand Li | Self stand ionogels are designed based on a dual dynamic network. The ionogels possess high self healing efficiency with excellent stretchability. The ionogels own high ionic conductivity and operating voltage window. MSCs was prepared with ionogels acting as electrolyte and substrate simultaneously. The capacitance retention rate of MSCs reaches 98 after 5th healing process. |
S138589471933061X | Over the past few decades extensive usage of electronic devices have led to the ubiquitous occurrence of electromagnetic waves which have posed a significant hazard to human health and surrounding environment . Most of the currently developed electromagnetic wave absorption materials present serious drawbacks and it is highly desired to develop effective strategies to address these problems . Herein we fabricated a sea cucumber like hollow structured fibrous composite based on facile chemical polymerization and fast microwave calcination . The formation of multi shell hybrid structure exhibited excellent electromagnetic wave absorption performance . Specifically the composite sample showed a minimum reflection loss R | A sea cucumber like hollow structured fibrous composite was finally obtained. The facile microwave assisted strategy was developed to fabricate the sample. It exhibited the optimum absorption with a reflection loss value of 41.4dB. This represents an alternative approach to design novel absorption materials. |
S1385894719330645 | Potassium ion batteries are regarded as a promising energy storage appliance for large scale applications due to their abundant K reserves and fast K | H K. Mn. Mg. is prepared by a facile resorcinolformaldehyde method. Electrochemical property and reaction kinetic of H K. Mn. Mg. are explored. H K. Mn. Mg. exhibits a single phase reaction upon K. insertion extraction. H K. Mn. Mg. hard carbon full cell delivers 127.9Whkg. at 100mAg |
S1385894719330669 | Nickel cobalt sulfides are deemed as promising electrode materials for energy storage devices due to their rich redox active sites as well as superior conductivity . Herein we report P doped | assemblies are prepared through facile one step solvothermal route and a subsequent phosphorization process. The as obtained product as electrode material shows a specific capacity of 1026 C g. at current density of 1Ag. An asymmetric supercapacitor delivers an energy density of 131.40 Wh kg. at 1355.37Wkg. The superior electrochemical performance could be attributed to their unique spatial architectures and synergistic effect. |
S1385894719330670 | Aqueous Mg ion batteries attract lots of attention due to its high safety low cost and potential application for large scale energy storage system . Although spinel type metal oxides display their capable Mg ions storage behavior low diffusion ability extremely hinder their practical application . Herein low cost MgFe | Low cost MgFe. Mn. nanoparticles were prepared via a facile so gel route. MgFe. Mn. exhibited good rate ability and cycling stability. MgFe. Mn. displays Mg ions diffusion coefficients of 2.5510. cm |
S1385894719330694 | Highly chemical stable and antibacterial materials are desirable for bone reconstruction and packaging applications . Crosslinked polymer inorganic materials have attracted significant attention in this respect owing to their low cost simplicity and excellent mechanical properties . Up to this work it remains challenging to fabricate hybrid organic inorganic films with controlled electrochemical photocorrosion and antibacterial performance that are stable in the aggressive solutions and solvents . In this protocol paper we report a new approach to designing crosslinked polymer inorganic films with enhanced corrosion protection and antibacterial performance by manipulating the amount of citric acid and polyvinyl alcohol in the hydrogen film PxCy . Ultrathin PxCy films are fabricated in situ by interfacial crosslinking process on the porous inorganic surface synthesized via straightforward plasma electrolysis . Enhanced electrochemical photocorrosion and potential antibacterial performance for IC PxCy film is achieved by using contorted crosslinking agent CA for the interfacial crosslinking process . The electrochemical performance is enhanced remarkably in the order of IC P6.5C3.5 IC P5C5 IC P10C0 IC and IC P2C8 which account for the synergistic integration of the IC and PxCy as well as degree of crosslinking between PVA and CA . In addition the results indicate that IC P6.5C3.5 IC P5C5 and IC P2C8 have outstanding antibacterial activity . | A new approach is designed for crosslinked polymer inorganic hybrid films. Corrosion resistance is remarkably improved with compact structure. Potential antibacterial performance is enhanced via crosslinking agents. An optimum combination of protective and antibacterial activity together is accomplished. |
S1385894719330700 | The challenges for preparing metal single atoms catalysts are facile synthesis approaches and the suitable supports with strong coordination to stabilize MSAs . Herein we reported a facile strategy to synthesize the Ru single atoms through the dynamic transformation from clusters to single atoms by combining the electrospun technology and NH | Ru SAs were. synthesized by the dynamic transformation from clusters. The formation of RuNC bonds plays an important role for anchoring the Ru SAs. The transformation can be controlled by the treatment time and temperatures. Ru SAs exhibit superior HER activity with overpotential of 34mV 20mAcm. . |
S1385894719330736 | In the framework of thermochemical energy storage in concentrating solar power plants the calcium looping process carried out in fluidized bed reactors is receiving increasing research interest due to the high energy density and the extremely low price nontoxicity and wide availability of natural CaO precursors . One of the main open challenges in CaL is represented by finding solutions to the progressive decline in the CaO carbonation conversion with the number of cycles which is due to the sorbent deactivation caused by sintering and pore plugging . In this framework the reduction of the CaO particles size has been reported to improve the carbonation conversion and therefore the achievable energy density by maximizing the availability of the sorbent surface exposed to the gaseous phase and hindering the natural loss of CaO mutlicyclic activity . However the use of fine particles in fluidized bed reactors is challenging due to agglomeration channeling and plugging phenomena . | Fine limestone has been tested for TCES CSP for its superior mutlicyclic stability. TCES CaL of fine limestone has been performed in a lab scale fluidized bed rig. Acoustic perturbation has been used to overcome the strong interparticle forces. The sound application enhances the carbonation performances of fine limestone. The sound application results in a strong reduction of the sorbent deactivation. |
S138589471933075X | A potential source of energy is encapsulated in the form of natural gas hydrates found in the diverse permafrost and marine geological settings . To understand the hydrate dynamics we articulate a rigorous mathematical formulation by contemplating the pervasive role of indigenous elements including porous material and saline water of the natural gas hydrate reservoirs . This formulation takes into account the characteristic behavior of the porous media in the aspects of their porosity and particle size distribution and the dynamic contribution of the saline water towards the hydrate formation and growth in reservoir mimicking environment . All relevant model parameters are tuned by using the generalized reduced gradient nonlinear optimization technique . The model is employed to investigate the dynamics of methane hydrate at diverse field conditions . Validating the model with experimental data for three different setups its performance improvement is quantified in terms of the absolute average relative deviation . This proposed model shows a promising performance at the wide range of conditions . | Proposed a rigorous formulation for gas hydrate formation and growth. Addressed several practically relevant issues of porous media and saltwater. Validated with data generated in reservoir mimicking environment at south China sea. Observed a promising performance at the wide range of conditions. |
S1385894719330761 | Battery supercapacitor hybrid devices are emerging wide application in new energy storage electric vehicles and other fields with excellent performance in energy storage and power amplifier . However the development of suitable cathode materials is far from being satisfactory and limits the performance . Here we demonstrate that the Ni | The Ni. nanowires were synthesized by one step hydrothermal. High conductivity of Ni. nanowires was confirmed by four probe tests and DFT. The Ni. AC hybrid device has an energy density of 108.2 Wh kg. and power density of 8.96 kW kg |
S1385894719330797 | Nanostructure construction and composition tuning are two effective methods to accelerate electrochemical reaction kinetics and increase electroactive sites of nickel cobalt selenides nanoarrays . Herein we have successfully designed and fabricated the P Se | The unique nanoarchitecture with PBA derived nanocubes anchored on nanowires and nanoflakes are rationally constructed. The proper P incorporation in Ni Co Se. could greatly increase the electrochemical properties. The operating potential of hybrid supercapacitor could be extended to 1.8V. The P Ni Co Se. ZC device shows a high energy density of 45.0Wh kg. at the power density of 446.3Wkg |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.