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S1385894720303831 | A spinning disk reactor is a promising contacting device used in the synthesis of nanoparticles through reactive precipitation . The synthesis performance depends on the flow characteristics of the liquid film on the reactor . Using a glycerolwater solution as the experimental medium this study examined the three distinct zones of the radial velocity profile and the formation of hydraulic jump through laser Doppler velocimetry and volume of fluid methods . The results showed that as the inlet Reynolds number increases the inertial effect dominates farther out and pushes the three zones outwards a wider acceleration zone is obtained and the pouring diameter does not affect the synchronisation zone . At higher rotational speeds the centrifugal effect dominates even at a smaller radius and the three zones move inwards leading to a wider synchronisation zone . The hydraulic jump generally occurs at lower rotational speeds higher viscosity or smaller pouring diameter . At higher inlet Reynolds number or lower speeds the jump region expands and migrates outwards . Although the pouring diameter can determine whether the jump occurs it only slightly affects the location of the jump . The synchronisation and jump radii can be predicted using the radial length scale factor . The Nusselt model was modified by incorporating a correction term and a regression model was proposed to predict the maximum film height . | High rotary speed viscosity or low flow rate with wider synchronised zone in SDR. Hydraulic jump formed with low rotary speed high viscosity or small pouring size. Prediction of synchronisation radius and jump radius by radial length scale factor. Pouring size has little effect on where zoning behaviour or hydraulic jump occurred. |
S1385894720303892 | A simple and regulatable strategy was proposed to synthesis hierarchical porous carbon from heavy residue of waste tire derived pyrolytic oil . Magnesium acetate powder was adopted as a pore creator and adjustor which was mixed with heavy residue and tetrahydrofuran by grinding . Subsequently the various pore structure carbons were obtained after evaporation carbonization and MgO removal . The change in pore size was significantly observed with the magnesium acetate dosage . In this method the addition of magnesium acetate could result in higher carbon yield . Remarkably the carbon prepared at optimum condition exhibited higher specific surface area and micro mesopore structure leading to an excellent performance towards dye contaminant removal . The prepared porous carbon sample exhibited best adsorption capacity at 298K for methylene blue . Furthermore the effect of pH and temperature on adsorption capacity of prepared porous carbon were also investigated . The adsorption process of MB onto porous carbon was favorable according to the Freundlich model parameter 1 | The heavy residue can be used as a novel precursor for preparing porous carbon. The pore structure can be adjusted by magnesium acetate dosage. The carbon prepared showed maximum methylene blue adsorption capacity of 843.5mg g at 298K. |
S1385894720304101 | Inorganic materials have lot of attention owing to their unique properties which can be explored for multiple biomedical application . Recently alloy nanoparticles have been shown as potential candidate for multimodal therapy and imaging of cancer . In the present study a novel pH responsive poly l lysine coated Fe | pH responsive drug Alloy nanoconjugates. Subcellular targeted therapy of brain tumor. Chemotherapy and photo chemotherapy combination therapy. Hypoxia and mitochondria targeted versatile platform. |
S1385894720304198 | Oxygen catalysts that concurrently meet the durability and activity requirements for both the proton exchange membrane water electrolyzer and the zinc air battery are rarely reported despite their tremendous advantages in cost reduction . We use a group of Mg doped Y | YMRO 0.15 is stably operated in both PEMWE and ZAB devices for the first time. The OER and ORR performance of YRO are optimized by oxygen vacancy engineering. This work develops new type of oxygen electrocatalysts for both PEMWE and ZAB. |
S1385894720304290 | In this study a model for an unconventional bioreactor a U loop fermentor is presented and compared to experimental data from a series of pH tracer pulse experiments . A good agreement between model and data with very little error and computation time could be achieved when numerical diffusion combined with a carefully determined variable finite volume discretization method is employed to solve the system of partial differential model equations . The approach also overcame the obstacle posed by a constraint related to a complex pressure profile . An analysis of stability controllability and observability if the reactor model is extended to include manipulated inputs measured outputs and a complex validated bio kinetic model revealed unstable process dynamics but good observability and controllability even if very few sensors were functioning . A thorough investigation of the linearization effect suggested to perceive this result with caution but encouragement . | Presentation of a model of an unconventional bioreactor. Benchmarking of the model against pressure and pH sensor tracer responses. Analysis of system stability observability and controllability using proven models and real inputs outputs. |
S1385894720304307 | A simple method has been designed for preparing a new material based on the interactions of cellulose acetate cetyltrimethylammonium bromide with tetraethyl orthosilicate in alcohol . In a second step the material is loaded with molybdate . The nano objects produced by this procedure are characterized as microporous hollow spheres with a morphology similar to hollow wagon wheels . These materials were used not only for As removal for Mo but also for naked eye detection of As in solution . The chemical and physical characteristics of these nano objects have been analyzed through XRD FTIR HR TEM EDX TGA DTG and N | Simple synthesis of hollowwagon wheel sorbent with CA CTAB sacrificed template . High surface area microporous hollow spheres of. VI for As V sorption. Pseudo first order rate and Sips equations for modeling kinetics and isotherms. Used as naked eye sensor the material detects As V at level as low as 0.3M. Efficient As V desorption using 1mM NaOH solution and high recycling performance. |
S1385894720304332 | The three dimensional vertical array scaffolds can be constructed by electrostatic flocking with quite high efficiency and low cost for large area applications . Herein we have fabricated stretchable and highly conductive fabric base resulting from the strong interaction between acid functionalized carbon nanotubes and cationic cotton spandex fabric . Then the electrostatic flocking was applied for the first time to implant vertical arrays of carbon fibers onto conductive fabrics accompanied by deposition of nano MnO | There is strong interaction between AC MWNTs and cationic cotton spandex fabric. 3D stretchable scaffolds were made by electrostatic flocking with high efficiency. Fabric based electrode provided ideal electrochemical reversibility under tension. Asymmetric supercapacitors were assembled with excellent capacitive performance. |
S1385894720304356 | In this study the effect of rare earth Y on the microwave absorbing properties of the powders was studied directing against low electromagnetic loss and low dielectric constant of Fe | Fe. Si. alloy powders with excellent absorbing properties were prepared. The mechanism of yttrium s influence on absorbing performance was explored. The minimum interference thickness at 0.3GHz decreased by 56.5 . The performances were due to synergistic effects of components and structure. |
S138589472030437X | Toward eradicating tumor it is crucial to facilitate the sustained delivery of encapsulated drugs and render enhancements of therapeutic effectiveness . Local cancer therapy with combined drugs has emerged as a promising therapeutic strategy . Herein we put forward to construct a hybrid nanocomposite in which metal organic frameworks were integrated with thermosensitive hydrogels to devise an injectable implant . Doxorubicin and celecoxib were coloaded into the system for localized oral cancer therapy Dox Cel | The hybrid material integrating MOFs into hydrogels are designed for the first time. Doxorubicin and celecoxib are coloaded in the system for local oral cancer therapy. The nanocomposite realizes simultaneously pH responsive dual drug sustained release. The nanocomposite enhances the antitumor effect and mitigates toxic side effects. Original data of MOFs reveals no permanent toxic effect only reversible anomalies. |
S1385894720304381 | Aggregation induced emission photosensitizers with strong photosensitization perform well in efficient tumor photodynamic therapy . However small molecule AIE PSs will cause cytotoxicity of normal cells for the lack of targeting . Researchers used nanocarriers to improve the targeting of photosensitizers and reduce toxic side effects on normal tissues which would also bring about the safety problems of nanocarriers . In this study we developed a novel pH responsive carrier free AIE nano photosensitizer self assembled by amphiphilic AIE photosensitizer . This carrier free AIE NPS overcomed the safety problems of nanocarriers and the protonation and deprotonation of carboxyl groups of HD APNNA endowed the AIE NPS pH responsibility . Meanwhile The ROS production efficiency of AIE NPS is as high as 56.7 which is superior to the commonly used photosensitizers in clinic . As a result the AIE NPS showed a remarkable photodynamic therapeutic effect in vitro under white light 50mWcm | A new small molecule aggregation induced emission photosensitizer HD APNNA was designed and synthesized. The molecule HD APNNA assembled into carrier free nano photosensitizer AIE NPS . The AIE NPS was of pH responsiveness. The AIE NPS showed a remarkable photodynamic therapeutic effect in vitro and in vivo. |
S1385894720304642 | Mechanoluminescence is the luminescence responses to mechanical stimuli and offers a variety of significant applications in lighting anticounterfeiting sensors and imaging . At present the only efficient ML materials are sulphides and trap controlled oxides . In this paper we report the ultra strong green ML of a new Lu | LuAG PDMS elastomer shows ultra strong green ML. ML of elastomer does not require any pre irradiation. ML of elastomer can be stimulated thousands of times due to self recoverable. ML of elastomer is irrelevant to the traps and piezoelectricity of structures. |
S1385894720304721 | Photocatalysis is regarded as a promising method for indoor formaldehyde removal and there remains a strong demand for the development of highly efficient photocatalysts for HCHO oxidation under visible light . Herein by grafting nano CuO | Cu TiO. has superior activity for photocatalytic oxidation of HCHO under visible light. The presence of H. O greatly promote the activity for HCHO oxidation. CuO. clusters on TiO. have the super reversibility between Cu II and Cu I . OH plays the crucial role in surface formate decomposition rather than the |
S1385894720304769 | Microporous polymer monoliths have demonstrated high robustness convenient recyclability effective accessibility and impressive catalytic activity in heterogeneous catalysis when employed as catalyst or catalyst support . However their synthesis is restricted by complicated synthetic conditions the use of expensive monomers and inconvenient processing . Hence the design and development of simple versatile and low cost strategy for their synthesis is highly desired . Herein we report a facile strategy to prepare functionalized hierarchical porous polymeric monoliths via a two step method i.e . the copolymerization of high internal phase emulsion followed by external knitting . The hierarchical porous structure that consists of interconnected macropores and abundant micro mesopores was confirmed by SEM and N | A facile strategy was proposed for versatile monolithic catalysts preparation. Feasible metal nanoparticle size controlment was realized by two methods. Ultrafine gold nanoparticles were obtained with 0.51nm average particle size. Monolithic catalysts show excellent catalytic performance for 4 nitrophenol reduction. |
S1385894720304770 | The structural phases spinel inversion degree metal reduction and performance of Al Ox and Mg Al Ox supported monometallic Co and Ni catalysts prepared by co precipitation method were studied for dry reforming reaction . Catalysts were characterized using ICP MS N | Different textural bulk properties facilitated different performances. Ni Co reducibility from Ni Al Ox and Co Al Ox were different. Co Al Ox showed no activity to CO. reforming while Ni Al Ox did. MgO improved the performances of Co Al Ox than Ni Al Ox for DRM. Incorporation of Ni Mg increased spinel inversion while Co did not. |
S1385894720304794 | The enzymatic activity and practical applications of immobilized enzymes were severely influenced by their location orientation and microenvironment which played the key roles in maintaining the active conformation and accelerating the reaction process of the desired enzymes . Herein we presented a general approach to prepare magnetic DNA nanocompartments for encapsulation of metabolic model cascade multi enzymes glucose oxidase and horseradish peroxidase through self assembly . The enzymes were spatially confined in the well designed DNA compartments which were located at the gap areas of magnetic particles . Systematic studies indicated the proximity effect of the multi enzymes and the high negative charge density microenvironment of the DNA compartments contributed to the high cascade activity together . In addition the immobilization enzymes within magnetic DNA compartment remarkably increased the overall catalytic efficiency operational stability and reusability . The | The magnetic DNA compartments were prepared for encapsulation of multienzymes. The immobilized enzymes can adjust their location and microenvironment. The prepared enzymes enhanced catalytic efficiency stability and reusability. The compartment enzymes could detect glucose and kill Hela cells. |
S1385894720304800 | A modeling and dynamic control study for a Fischer Tropsch synthesis fixed bed reactor under the one dimensional pseudohomogeneous scheme representation with integration of the cooling jacket dynamic approach has been developed . The proposed reactor model contemplates the use of a novel mechanistic kinetic model based on the Langmuir theory recently reported in the literature . To ensure a good thermal behavior and an improvement reactor performance a proportional integral controller is implemented in the cooling jacket . The robustness of the controller the dynamic model and the mechanistic kinetic approach are evaluated and validated against the use of four different sets of initial operating conditions of temperature pressure and gas hourly space velocity . The results indicate the reactor model potential under the proportional integral controller action since it allows to completely attenuate the typical hot spot formation in fixed bed reactors in which highly exothermic reactions are carried out . In addition the mechanistic kinetic model represents to a great extent the Fischer Tropsch synthesis reaction network in terms of the syngas conversion and the light gases and heavy liquid hydrocarbons selectivity . | A robust dynamic reactor model is proposed for Fischer Trospch synthesis. Validation of the model is done with four sets of operating conditions. PI controller ensures good control of reactor temperature. Control scheme in cooling jacket is crucial for good thermal behavior. |
S1385894720304848 | The design of new family carbon materials to capture more saline ions is one of the biggest challenges of capacitive deionization for water desalination . Herein we demonstrate the preparation of integrated tubular metal organic framework architectures using a 3D scaffold and their derivative of nitrogen doped carbon tubes that possess a maximum salt adsorption capacity of 56.9mgg | Integrated tubular MOF architectures are synthesized by layer by layer nanopatterning on a 3D scaffold. NCTs are prepared by carbonization of integrated tubular MOF architectures. NCTs exhibit a maximum salt adsorption capacity of 56.9mgg |
S1385894720304861 | Copper nanowire is one of the most promising candidates for next generation transparent conductive film . However practical applications of CuNW are still limited by several drawbacks including loose wire to wire junctions poor resistance against oxidation chemical and thermal damage . To concurrently address these urgent issues highly conductive and stable TCF is prepared based on | Firm junctions between stacked CuNWs were achieved by electrodeposition coating Ni shell. The sheet resistance of. NW TCF decreased from 513 to 15.8Ohm sq at a transmittance of 88 . The electrical resistance of. NW network remained stable after storing in atmospheric environment for a week. The. NW network could resist H. corrosion up to 450s. The morphology of. NW network kept intact after heating at 400C for 30min. |
S1385894720304873 | Developing low cost environment friendly and highly active nanocomposites for photocatalytic hydrogen evolution reaction holds pivotal function in water splitting . Supported cocatalysts on semiconductor can facilitate speedy transfer and separation of photoexcited charge active interfacial response and suppress photocorrosion . We for the first time proposed a novel strategy to formed 2D 2D nanocomposites by loading 2D P doped Ni | P doped Ni. S Ni. SP was firstly used as a cocatalyst for efficient photocatalytic H. evolution. The P doped Ni. S Ni. SP. CdS 2D 2D nanojunctions were for the first time constructed. The improved charge separation and H. evolution mechanisms were revealed. The strongly coupled 2D 2D nanojunctions show better activity for photocatalytic H. evolution. |
S1385894720304885 | We present validated statistical models and univariate correlations of carbon nanotube textile properties extracted continuously from floating catalyst chemical vapour deposition reactors over a uniquely wide multivariate experimental space . This includes directly controlled reactor settings | CNT production optimization from floating catalyst chemical vapour deposition. Validated statistical models predict conductivity Raman G D ratio and yield. Models account for intricate parameter interaction and curvature. Correlation maps of extensive multivariate parameter space support models. Two reactors explored inline FTIR monitors precursors with novel microfluidic flow. |
S1385894720304903 | We used Monte Carlo simulation with canonical and grand canonical ensembles to investigate the structure of the adsorbate and the hysteresis in the isotherm for xenon adsorption in a closed end graphitic wedge pore at temperatures below the simulated bulk triple point of 159K . The simulation results are compared with those of the corresponding open end wedge to reveal the interesting behaviours in the presence of the closed end . We found that when the apex angle is less than a critical angle hysteresis occurs because of the ordering of the adsorbate . This is due to the enhancement in the solid fluid interactions that induces the adsorbate into a sequence of domains of ordered layers separated by smaller disordered junctions and each domain has its own characteristic temperature above which it becomes disordered . The difference in the pressure at which the ordered domain forms during adsorption and that at which the evaporation occurs upon desorption is the microscopic reason behind the hysteresis and we can view the alternate domain junction as the solid like structure of the adsorbate in the mesoscopic scale . However as the adsorbate progresses further away from the apex it becomes disordered with a clear interface separating the adsorbate and the bulk gas and it is found that the functional form of the Cohan equation can be used to relate the radius of curvature of the interface to the bulk pressure . Through this equation we have found that the adsorbate is denser than the supercooled liquid and yet is not as structured as the bulk solid for temperatures below the bulk triple point temperature . | Hysteresis occurs for xenon adsorption in a closed end graphitic wedge pore. The hysteresis is caused by the formation of an ordered domain and its evaporation. Cohan equation was applied to calculate the radius of curvature of the interface. The adsorbate is denser than the supercooled liquid. The adsorbate is not as structured as the bulk solid. |
S1385894720304939 | Phosphate rock is a depleting resource and wastewater a sustainable long term alternative for phosphorous mining . In modern wastewater treatment phosphate is concentrated 7500 times from wastewater into sludge as iron phosphate . Recently developed bioelectrochemical reactors enabled phosphate recovery from sewage sludge containing FeP . The integrated bioelectric process was found of much broader utility than initially elaborated . It refines all principle components of wastewater . The implementation is confronted to a number of challenges . Three pilot microbial electrolysis cells of 168 L each were constructed and installed in different municipal wastewater treatment plants . The scale up MECs generated renewable chemical base and co extracted abundant species such as Na | A novel multi compound recovery system for wastewater refining was developed. Three 168 L microbial electrolysis cells were constructed and used in three locations. Renewable phosphate was quantitatively recovered from digested sewage sludge. Chemical base ammonia and other compounds were obtained from wastewater. Struvite was analysed with new metagenomics method for microbial contaminants. |
S1385894720304964 | The high efficiency synthesis of biofuel valerolactone from biomass derived levulinates is a challenging task . The Meerwein Ponndorf Verley reduction with its extraordinary chemoselectivity is advantageous for the hydrogenation process compared to the molecular hydrogen based process using noble metal catalysts . Therefore we used a classical Al based isopropoxide to catalyze transfer hydrogenation of methyl levulinate to GVL . A high yield of GVL up to 97.6 could be achieved using 2 proponal as the H donor and solvent under mild conditions . Besides three reaction stages were observed in the conversion including transesterification hydrogenation and cyclization . LC MS analysis and the density functional theory caculations revealed that Al atom of Al O | Al OiPr. exhibited high efficiency on conversion of ML to GVL under mild conditions. ML was prone to undergo transesterification than direct hydrogenation. Al atom activated ester carbonyl of ML before activating the ketone carbonyl. 2 Propanol participated in the cyclization process as proton transfer carrier. |
S138589472030499X | Flexible wearable electronic textiles are in great demand with the rapid development of intelligent electronic clothing systems . Nonetheless developing the wearable textiles based all weather conductive fabrics with high conductivity and sensitive temperature response property remains a huge challenge . Herein an all weather high conductive fabric and fire warning sensor have been successfully fabricated on the basis of the multifunctional superamphiphobic cellulose fabric with high conductivity and excellent flame retardant property . It is worth noting that the as prepared ACF and AFWS have different surface resistances which are 1.1 sq and 1k sq respectively . In comparison with the previously reported conductive textiles the resulted ACF shows superior electrical stability even under extreme conditions such as complex water phase oil phase flame and bending . Moreover the LED array has been designed and exhibits good electrical properties by virtue of the high conductivity and favorable oil water repellency of the ACF demonstrating wide application prospects in large scale preparation of wearable electronic textiles . In addition the as prepared AFWS exhibits sensible temperature responsive electrical resistance change which can quickly respond within 3s . More importantly the mechanism of rapid reconstruction of the conductive network on the functionalized fabric surface driven by phosphorus blowing agent at high temperature have been well proposed . The current work provides a new idea to develop advanced multifunctional all weather wearable electronic device which can effectively realize real time monitoring of human health and early warning of abnormal high temperature in various harsh outdoor environments . | The multifunctional conductive ACF and AFWS were prepared by layered deposition. The resulted ACF and AFWS possess great superamphiphobicity and flame retardancy. The obtained ACF has a low surface resistance of 1.1 sq and stable conductivity. The AFWS shows rapid detection response for flame and high temperature within 3s. The smart fabric is useful for wearable electronic textile and fire warning device. |
S1385894720305039 | The elimination of sulfamethoxazole from water matrix is still challenging in advanced oxidation processes due to the hindrance by background constituents and the generation of toxic by products especially halogenated ones in the presence of halide ions . Herein we reported the catalytic degradation of SMX by combined reactive oxygen species including both radical and non radical mediated processes . The combined ROS of sulfate radicals SO | Radical non radical combined system was employed for sulfamethoxazole degradation. Contribution from reactive species to sulfamethoxazole degradation was evaluated. Generation of BrO. is inhibited in the presence of Br. Detoxification and degradation pathway of sulfamethoxazole was pH dependent. |
S1385894720305064 | Developing high performance and cost effective electrode materials to advance the overall water splitting and electrochemical potassium ion storage has thus far remains appealing yet challenging . Herein bimetallic Fe Ni phosphide nanoframes harvesting three dimensional carved frameworks have been fabricated in a scalable and controllable fashion . Thus derived FNP nanoframes have been demonstrated as efficient bifunctional electrocatalysts for overall water splitting comparing favorably with the benchmark performance of the IrO | Controlled synthesis of FNP carved nanoframes was realized in a scalable manner. Thus fabricated FNP held promise in the realm of energy conversion and storage. Thus derived FNP nanoframes functioned as efficient bifunctional electrocatalysts for overall water splitting. All FNP potassium ion battery driven self powering water splitting system was constructed. |
S1385894720305076 | The strategic combination of photodynamic therapy and chemotherapy has emerged as a promising treatment option for various tumor indications which not only expands our understanding of each individual modality but also reveals new opportunities to achieve superadditive benefit via exploring their internal synergy rather than simple mixing . In this study dual emissive upconverting nanoparticle was employed to bridge the two treatment regimens to synergistically reinforce the therapeutic efficacy . The UCNP based drug delivery nanoplatform was first co loaded with 1 8 dihydroxy 3 methylanthraquinone photosensitizers and UV activatable camptothecin prodrug and then complexed with biofunctional cyclodextrin species via highly specific host guest interactions to cap the camptothecin prodrug conjugated on the nanoparticle surface . The supramolecularly attached CD PEG LA could not only enhance the aqueous dispersity of the nanocarriers and prevent DHMA leakage but also imbues targeting effect against asialoglycoprotein receptor overexpressing tumor cells . The UCNP core would convert the NIR excitation into localized UV and visible emissions of which the former would cleave the nitrobenzene linker to restore the cytotoxicity of CPT while the latter could excite the photosensitizer to generate reactive oxygen species . In addition to the photodynamic damage the light generated ROS could also facilitate the endo lysosomal escape of the endocytosed nanoparticles and improve the overall antitumor potency in a synergistic manner . | Tailored upconverting nanoparticles UCNPs emit both UV and vis light under NIR. UCNPs were supramolecularly loaded with DHMA photosensitizers and camptothecin CPT . The UV emission could initiate the release of CPT. The visible emission could excite the DHMA for photodynamic therapy. The PDT activity enables the lysosomal escape of the CPT for enhanced efficacy. |
S1385894720305088 | Metal nanowires boost the development of flexible transparent conductive electrodes but they are hardly applied in industrial productions due to poor reliability . Although various coating technologies have been used to resolve this issue most of them deteriorate the transmittance of TCEs due to the thick coating shell . Herein we propose a facile and highly compatible structural transformation process for fabricating core shell NW TCEs with highly improved reliability . Instead of increasing the thickness of the coating shell to guarantee sufficient coverage around NWs an instantaneous and surface heating technology of intense pulsed light is creatively applied to realize the structural transformation of scattered Ni crumbs into an ultrathin and uniform Ni coating shell . Results show that without the decline of the transmittance the reliability of structure transformed | IPL enables the structural transformation from scattered Ni crumbs to a Ni shell. The transformation causes no damage to AgNW networks and flexible substrates. Without transmittance loss chemical and thermal reliability of TCEs are increased. Flexible transparent heaters show high heating efficiency and electrical reliability. |
S138589472030509X | Fabricating Z scheme photocatalytic system is of great significance for water splitting and degradation of organic pollutants . However it is highly challenging to select suitable materials to form Z scheme photocatalysis systems due to the harsh requirement for band edge levels alignment and interfacial contact . In this work a novel all solid state Pt bridge SnO | All solid state Z scheme visible light driven SnO. Pt In. material was synthesized. The optimal photocatalytic H. evolution rate can reach up to 967.018molh. An appreciable apparent quantum efficiency of 18.2 at 420nm was achieved. SnO. Pt In. has excellent 2 4 dichlorophenol photocatalytic degradation activity. |
S1385894720305118 | Strong thermally insulating and biological PLA foams derived from cost effective and environmentally friendly process are needed for saving resources and improving energy efficiency . PLAs brittle feature and poor foaming ability are currently the major challenges which strongly restrict developing high performance PLA foams . Herein a scalable cost effective and environmentally friendly route by combining in situ nanofibril reinforcement with high pressure microcellular injection molding was developed for producing high performance PLA foams . Nanofibrillar PLA PET composite was prepared by coupling twin screw compounding and melt spinning . The presence of PET nanofibrils with an average diameter of 114.8nm greatly improve PLAs crystallization viscoelasticity and melt strength thereby enhancing its foaming ability . Thus sub microcellular nanofibrillar PLA PET composite foam with an average cell size of 322.8nm was produced using HPMIM which shows dramatically enhanced mechanical properties than the pure PLA foam . Remarkably the Izod and Gardner impact strengths of the HPMIM fabricated PLA PET foam are respectively more than 7 fold and 6 fold higher than those of the PLA foam fabricated by regular microcellular injection molding . Moreover nanofibrillar PLA PET composite foams with expansion ratio varying from 3.8 fold to 26.2 fold were fabricated . Thanks to the unique nanostructured cell walls with numerous micro nano fibrils and voids these nanofibrillar PLA PET composite foams with large expansion ratios show outstanding thermally insulating properties . The 26.2 fold PLA PET composite foam exhibits a thermal conductivity of 26.8mW mK much better than that of current polymer foams . The scalable and environmentally friendly method combined with the unique foam structure opens up new perspectives for developing high performance multifunctional porous materials . | Nanofibrillar PLA PET composite was prepared by combining twin screw compounding with melt spinning. Sub microcellular PLA PET composites foams was produced using high pressure microcellular injection molding. Nanofibrillar PLA PET composite foam exhibits greatly improved mechanical properties than pure PLA foam. Nanofibrillar PLA PET composite foam has unique nanostructured cell walls. Nanofibrillar PLA PET composite foam shows outstanding thermally insulating properties. |
S138589472030512X | As a promising treatment modality with spatial and temporal control alternating magnetic field triggered magnetic hyperthermal therapy shows broad and promising applications to overcome the drawbacks of traditional focal therapies in combating cancer . However the MHT efficacy is still not satisfactory with the presence of heat shock proteins . In addition sustained tumor hypoxia haunts practical implications for the treatment of solid tumors . Herein a novel magnetic nanosystem composed of hollow iron oxide nanoparticles Fe | Magnetic nanoplatform was developed to overcome tumor hypoxia. The enhanced SDT plays a great role in the alleviation of thermotolerance. The synergistic effect between SDT MHT was revealed via modulating ROS and HSPs. |
S1385894720305131 | In promoting the application of green and sustainable chemistry in wastewater treatment it is urgent to explore effective and stable photocatalysts with excellent degradability on tetracycline and reduction of Cr . However photogenerated charge recombination and low visible light utilization limit the application of photocatalysts . To solve this problem we successfully prepared all solid BiVO | 3D 2D 2D BVO. composite catalyst was successfully prepared by one step hydrothermal method. BVO. showed excellent photocatalytic activity in Cr VI and tetracycline. and h. were the main active substances in the photocatalytic oxidation reaction. is the main active material in photocatalytic reduction reaction to Cr. BVO. demonstrates potential practical value by simulating actual water conditions. |
S1385894720305143 | The fabrication of functional wound dressings to control skin bacterial infection is of vital importance . In this work a silver metal organic framework Ag | An electrospun fibrous mat. PLA was prepared via an electrospinning process. possesses three dimensional framework assembled from rod shaped molecular building blocks. PLA shows unique broad spectrum antibiosis potency. PLA can accelerate the healing rate of infection wounds in rats. Antibacterial mechanism was investigated by Ag. leaching ROS production and proteomics analysis. |
S1385894720305155 | Excessive reactive oxygen species as effective cancer therapeutic agents can promote tumor apoptosis . However the clinical applications of ROS mediated cancer therapies still have many limitations such as self defects of traditional photosensitizer adverse tumor microenvironment and insufficient ROS production . Here two dimensional and highly oxidized ilmenite nanosheets HOIL NSs formula FeTiO | A Z scheme heterojunction functionalized 2D HOIL NSs were fabricated. HOIL NSs have high charge separation efficacy and enhanced redox potentials. HOIL NSs can both modulate the TME and produce. OH by catalyzing Fenton reaction. A high photothermal conversion of HOIL NSs was observed exposed to 808nm laser. |
S1385894720305167 | The design and construction of noble metal free electrocatalysts with superior activity high efficiency and robust stability is still a big challenge for overall water and urea splitting . Herein a novel hybrid electrocatalyst comprising fullerene quantum dot decorated CoNi layered double hydroxides nanosheet arrays anchored on porous Ni foam is elaborately fabricated . Beneficial from the synergetic effect between FQD and CoNi LDH the obtained FQD CoNi LDH NF exhibits superior electrocatalytic activity for hydrogen and oxygen evolution as well as urea oxidation under ambient atmosphere . Impressively to drive a current density of 10mAcm | FQD decorated CoNi LDH nanosheet arrays anchored on NF was fabricated. The hybrid shows superior electrocatalytic performance for water and urea splitting. The mechanism was studied in combination of experiment and DFT calculation results. |
S1385894720305179 | A novel continuous aerosol photopolymerization technique to coat nanoparticles that have been previously de agglomerated is presented . After de agglomeration in a jet impactor assisted fluidized bed monomer vapors are condensed onto the surface of aerosolized nanoparticles via heterogeneous condensation . Photopolymerization is initiated through exposure to UV light . To demonstrate the process titanium dioxide TiO | De agglomerated nano TiO. was coated with a PMMA like film using aerosol photopolymerization. Presence of a PMMA like film was confirmed by TEM TGA FTIR and XPS. Jet impactor assisted fluidized bed reduces the size of nano TiO. agglomerates. Coated nano TiO. showed enhanced long term dispersibility in non polar media. |
S1385894720305180 | The advanced treatment of biotreated Chinese patent medicine wastewater was urgently necessitated to meet the strictest wastewater discharge standard . In the present study combined ozone peroxymonosulfate oxidation and upflow biological aerated filter process O | PMS UBAF efficiently treated BCPMW. DOM was mainly removed by O. PMS and UBAF. Biodegradation rate of DOM was increased after O. PMS oxidation. PMS presented reactivity selectivity. |
S1385894720305209 | Volatile organic compounds have seriously affected the natural environment and human health and adsorption is one of the most effective method for controlling VOCs pollution . In this work the NH | The NH. HF. etched NaY zeolite with intracrystalline mesoporosity was obtained. The large size mesopores disappeared to form the surfactant templated mesopores. The mechanism of the surfactant templating process was elucidated. The intracrystalline mesoporosity efficiently adsorbed the toluene molecules. |
S1385894720305222 | The thermal management of catalytic reactors dedicated to highly exothermic reactions is often challenging due to the existence of a positive thermal feedback . Up to now many design and control options have been used to operate such reactors safely and efficiently . The present study examines the theoretical benefit of resorting to an alternative stabilization strategy based on the use of induction heated pellets . Under given inductive conditions the thermal power released by these pellets is a decreasing function of their temperature . Wall cooled fixed bed methanation reactors containing mixed catalytic and induction sensitive pellets are simulated numerically . The steady state behavior of reactors enhanced by induction is compared to the behavior of conventional reactors . It is shown that the parametric sensitivity of induction reactors is lower than that of a conventional reactor achieving the same conversion . Induction reactors also demonstrate an ability to reach a higher chemical yield than a conventional reactor before entering the runaway region . The impact of the operation conditions and of the induction sensitive pellets properties on the stabilization is analyzed . | Highly exothermic catalytic reactions often pose thermal management challenges. Induction sensitive pellets generate a thermal power that decreases with temperature. Cooled fixed bed methanation reactors with induction sensitive pellets are simulated. Induction reactors steady state operation is more stable than conventional reactors. A proper choice of the induction sensitive pellets thermal properties is crucial. |
S1385894720305374 | The PES B Cur membranes were prepared by incorporating boehmite nanoparticles functionalized with curcumin into PES membrane via phase inversion method . The PES B Cur membranes were characterized in terms of average pore size pore size distribution porosity specific surface area water contact angle and zeta potential . Characterization techniques like ATR IR XRD and XPS were used to confirm the presence of B Cur nanoparticles in the PES B Cur membranes . The morphological properties of B Cur nanoparticles and the PES B Cur membranes were studied using FESEM . performance of the membranes was also evaluated for pure water flux antifouling behavior and removal of heavy metal ions Fe | The boehmite functionalized with curcumin was used for synthesize of membranes. The PES B Cur membranes showed high permeation flux and antifouling resistance. The PES B Cur. membrane exhibited high rejection towards heavy metal ions. The modified membranes showed high adsorption capacity for heavy metal ions. |
S1385894720305386 | Silica gel was modified using 3 mercaptopropyl trimethoxysilane and used as an adsorbent for the recovery of gold from a thiosulfate solution based on the hard and soft acids and bases theory . The interfacial properties of the mercaptopropyl functionalised silica gel and its performance for the adsorption of gold from a thiosulfate solution were examined . An optimized modification procedure was determined to produce a MPSG mercapto group content of 1.1mmolg | Recovery of gold I from thiosulfate leaching solution by using silica gel. Mercapto modified silica gel has good adsorption capacity for gold at a weakly basic environment. Au adsorption onto modified silica gel involves interchange between SH and Au S. The charge of Au I decreased due to charge transfer from the ligand. |
S1385894720305398 | Li S cathode loaded with microdomain sulfur is preferred because of its high utilization of sulfur during charging and discharging . Encapsulating sulfur in porous carbon has often been used to form microdomain sulfur but is limited by the charge ion diffusion resistance in the pores . Here we demonstrate the formation of microdomain sulfur in the open pore CNT assembly . We obtain microdomain sulfur on CNTs coated with CeO | Formation of microdomain sulfur in CeO. nanoparticle modified CNTs. Fast charge discharge by microdomain sulfur and hierarchical pore CNT particles. Stable operation with a capacity reduction of 0.044 cycle at high C rate. High areal capacity of 5.6mAh cm. under high loading conditions. |
S1385894720305404 | A simple low cost and highly efficient process is required to produce free radicals from peroxides for degradation of organic pollutants . In this study for the first time CoFe | CoFe. prepared at 300C with an amorphous structure activated PMS efficiently. The column reactor continuously treated SCP wastewater without catalyst recovery. The Co leaching amount significantly decreased in PMScolumn reactor system. The treatment capacity was 78000Lm. with 1.0 CoFe. loading. A complete mechanism for PMS activation by CoFe. was proposed. |
S138589472030543X | A light emitting diode driven UV chlorine process was adopted to eliminate acetaminophen at three wavelengths . Our results showed that AAP was eliminated efficiently during UV LED chlorine process at three wavelengths and the AAP degradation followed pseudo first order kinetics . The pseudo first order rate constants | AAP degradation was affected by UV wavelengths during UV LED chlorine process. RCS and chlorination mainly contributed to the degradation of AAP. Factors affecting the roles of reactive species were studied at three wavelengths. Intermediates were identified during UV LED chlorine process. The acute toxicity can be better decreased during UV LED. chlorine process. |
S1385894720305477 | The development of economical and versatile catalysts for oxygen evolution reaction and hydrogen evolution reaction is an exceedingly challenge for hydrogen production from water electrolysis . Herein three dimensional phosphorus anion decorated cobalt disulfide hollow nanosheet arrays are uniformly deposited on carbon cloth P CoS | Integrated Co S P hollow nanoarrays is fabricated by a facile 2D Co MOFs based growth sulfidation phosphorization approach. The Co S P hollow nanoarrays exhibit excellent electrocatalytic activity toward OER HER and overall water splitting. DFT calculations reveal that P anions doping into CoS. leads to moderated adsorption energetics of OER and HER intermediates. |
S1385894720305489 | Hierarchical nanoarchitectures with large void space unique porous networks and numerous active sites for advanced supercapacitor electrodes has attracted great attention in modern electronics . Herein a novel strategy is established to rational design of hierarchical iron cobalt selenide Fe | The rational design strategy of hierarchical Fe. Co. Se. nanostructures was developed. The charge storage mechanism of the Fe. Co. Se. electrodes have been revealed. The solid state ASC exhibited ultrahigh energy density and ultralong cycle life. |
S1385894720305490 | Cu is a promising candidate for developing efficient and cost effective catalysts for metal induced photocatalysis . A highly desirable yet great challenge is the preparation of stable Cu based photocatalysts and its application in photocatalytic H | Ultrathin graphene coated Cu NPs are fabricated through a two step pyrolysis of MOF precursors. SrTiO. demonstrates remarkable stability even in an oxidative atmosphere. Optimized. SrTiO. shows a photocatalytic H. evolution rate of 255.3molg. under visible light. Acetone evolution rate in IPA degradation over. SrTiO. was 21 times as high as that of Cu SrTiO. Ultrathin graphene layer promotes charge separation and induces electron density redistribution. |
S1385894720305507 | This work explores the ignition mechanism of silicon based thermites and it is supposed that the phase change of silica SiO | The combustion behavior and ignition mechanism of several Si based thermites were investigated. The incorporation of Ti nanoparticles reduced the ignition temperature of Si KClO. The enhanced reactivity of Si KClO. has been shown via adding Ti nanoparticles. The combustion efficiency of Si Ti KClO. has been improved compared to Si KClO |
S1385894720305519 | Convenient integration of high purity graphene film on industrial sized silicon wafer is highly desired for on chip electronics such as pulse energy harvesting capacitors . However current graphene materials usually need costly additional purification procedures to remove metallic impurities before use . Herein a purification integration technique is explored for graphene oxide by using the reverse migrations of metal ions and negatively charged GO sheets in water under electric fields and corresponding films are successfully deposited on 6 inch anodic silicon wafers in one step . Nearly 90 of metallic impurities could be removed for the electric field purified reduced graphene oxide film with the content of Cr as low as 10ppm . Owing to the high purity and the robust interface contact to silicon substrates the EPGF as capacitor electrodes delivered the minimal self discharging current of 0.11A and the highest working frequency of 18420.7Hz for graphene capacitors reported to date as well as maintaining normal areal capacitance . In contrast to the common strategy by increasing ion rate this study focuses on the improvement of electron rate by optimizing electronic interface contact which provides new insights for fabricating kilohertz graphene capacitors . | A new purification technology is first proposed for metallic impurities in GO. The fabrication size can be enlarged to 6in. for the purified GO electrodes. High purity reduced GO electrodes show a minimal self discharge current 0.11A . The reduced GO as capacitor electrode has the highest working frequency of 18420.7Hz. The technology is compatible to the coexisting silicon manufacturing platform. |
S1385894720305520 | The development of aqueous high energy density and high power density supercapacitor electrode materials is urgent in order to provide a high energy density and safety for asymmetric symmetric supercapacitors . Here boron nitride and carbon functionalized porous mSiO | Porous mSiO. @Ni. NiS. were prepared by hydrothermal and calcination method. Formation process and factors of mSiO. @Ni. NiS. were discussed in detail. Three electrode has a specific potential 1.8V and energy density 202.5 Wh Kg. Symmetric device exhibited a voltage 1.8V with energy density 41.67 Wh Kg |
S1385894720305532 | Magnesium alloys have many unique properties but suffer from poor corrosion resistance . Effective anti corrosion strategies are highly desirable for widespread applications of Mg alloys . Bioinspired super anti wetting coatings are promising for metal protection but are limited by some issues . Here we report a bi layer superamphiphobic coating for efficient protection of Mg alloy by sequentially spray coating a conventional epoxy anti corrosion coating and a superamphiphobic coating perfluorodecyl polysiloxane modified SiO | Combination of epoxy paint and superamphiphobic coating provides long term protection for Mg alloys. Mg alloy shows high stability during 70 d 3.5wt NaCl immersion and 35 d neutral salt spray tests. Differences of superhydrophobic and superamphiphobic coatings in anti corrosion are revealed. Corrosion resistance of super anti wetting coatings in neutral salt spray test is improved. |
S1385894720305544 | Segregated structure with continuous filler network but isolated matrix is a classic prototype to increase the thermal conductivity of the composites . However such prototype only finds limited applications due to both the poor mechanical properties originated from the discontinuity of the polymer matrix and the mediately improved TC of the continuous filler network arising from the random contact of the fillers . In this work a reinforced segregated structure in which the continuous phase is made with boron nitride wrapped a trace amount of PP fiber is first proposed in order to enhance the TC and mechanical properties simultaneously . In such reinforced segregated structure BN aligns on the surfaces of PF thus forms a long range ordered high thermal conductive pathway . As expected an enhancement of 244 133 and 103 in the TC elongation at break and tensile strength of the composite with reinforced segregated structure are successfully achieved compared with typical segregated structure . Therefore this work offers some new insights into the design of a segregated structure to balance the TC and mechanical properties . | Constructing fiber reinforced segregated structure. BN orient along the fiber surface forming robust thermally conductive network. Simultaneously enhanced thermal conductivity and mechanical properties. |
S1385894720305568 | In this paper the 2D high nitrogen triaminoguanidine glyoxal polymer has been used to dope HMX crystals . Various constraint TAGP doped HMX crystals with higher density and better stability have been obtained due to strong constraint interactions between dopant and HMX molecules . The structure and thermal reactivity properties of qy HMX are unexpectedly largely affected by a slight change in the way of co crystallization precipitation under the same precursor conditions . In particular the density of qy HMX could be largely changed in the range of 0.94gcm | A variety of novel hybrid qy HMX crystals with different structure have been prepared and evaluated. The kinetics models governing the rate limiting thermolysis reactions are obtained. The structure and thermal reactivity properties of qy HMX and corresponding mechanism are clarified. |
S1385894720305581 | Marine exhaust gas is seriously harmful to the environment and only using a single pollutant treatment device is difficult to meet the emission regulations . It is imperative to study integrated and efficient marine exhaust gas pollutant removal technology . This study proposes a novel process capable of removing NOx and SOx in marine exhaust gas and this process can achieve higher NOx and SOx removal efficiency and lower nitrate concentration by using urea peroxide CO NH | A novel oxidation absorption process for removing NOx and SOx in marine exhaust gas. Urea peroxide can reduce SOx and NOx by about 100 and 90 respectively. Reaction temperature liquid gas ratio and urea peroxide concentration can control the removal efficiency of NOx. Urea peroxide can efficiently remove NOx and inhibit the generation of nitrate. |
S1385894720305593 | Wet phosphate rock flue gas desulfurization is a new and promising technology which has drawn increasing attention in recent years . The effect of Mn | The promotion effect of Mn. Fe. and Mg. on SO. removal is revealed. Trace Mn. and Fe. ions can enhance about 19 31.5 SO. adsorption capacity. 74.1 of activation energy is reduced when Mn. and Fe. are used to catalyze S IV . A radical chain reaction mechanism of S IV catalyzed by Mn. Fe. is proposed. The Mn. Fe. promote the formation of SO. radicals in the chain initiating step. |
S138589472030560X | Polypyrrole based fiber shaped supercapacitor is attracting increasing attention as energy storage devices of flexible and wearable electronic products in recent years . However its application is limited by the low specific capacitance and poor rate capability mainly suffering from inferior conductivity and inhibited ions channels of fiber electrode . Here a high performance flexible FSSC is constructed based on hierarchically interconnected porous poly poly PPy composite fiber prepared by in situ chemical polymerization of pyrrole on a novel highly conductive PEDOT PSS hydrogel support . The good electronic and ionic conductor properties hierarchically porous structure and interaction of conducting polymer hybrid fiber ensure fast electrons transfer ions diffusion and the efficient utilization of whole electrode . Benefiting from the well designed hybrid architecture and synergistic effect the PEDOT PSS PPy hybrid fiber in FSSC exhibits superb volumetric areal length specific capacitance 393.8Fcm | Hybrid fiber was prepared with PPy attached on the conductive porous PEDOT support. PEDOT support facilitates electrons ions transport to effectively utilize PPy. PEDOT PPy electrode in FSSC displays high specific capacitance 393.8Fcm. . The flexible FFSC shows the high energy density of 8.3mWhcm. at 389.1mWcm |
S1385894720305611 | Lithium sulfur batteries are highly desirable for next generation energy storage and conversion systems because of their low cost high energy density and unparalleled specific capacity . However the sluggish redox kinetics and shuttling effect severely restrict the practical application of Li S batteries . Herein vanadium oxide nanorods were embedded in porous graphene aerogel GA VO | Vanadium oxide nanorods are successfully embedded in porous graphene aerogel. The embedded VO. nanorods can effectively chemisorb and catalyze the LiPSs. GA VO. CB is prepared as a dual functional separator coating for Li S battery. The shuttle effect is suppressed and the conversion kinetic is enhanced. The resultant Li S batteries exhibit stable cycling behavior at high sulfur content. |
S1385894720305623 | Separator plays a key background role in maintaining excellent ionic flux and avoiding the subject of internal short circuit faults which is thought as the key part of lithium ion battery . Hence the characteristics of prominent thermal stability eminent electrolyte affinity and laudable mechanical strength are of vital importance to guarantee energy density and security for lithium ion cells . In this study a natty poly based gel membrane with multi level nanofibers was resoundingly prepared for the first time through blend electrospinning of manganese dioxide MnO | A novel multilevel structured MnO. assisted PVDF HFP PMIA based GPE is prepared. The GPE shows reduced aperture increased porosity and electrolyte uptake. The GPE has sufficient active sites and short diffusion channels for Li. migration. The GPE shows excellent thermal and mechanical properties to ensure battery safety. Lithium ion cells with the GPE show high ionic conductivity and cycle stability. |
S1385894720305635 | spacer as well as its substituted groups could take part in tuning the properties of molecules such as optical absorption molecular configuration film morphology and charge transport . In the paper 3 4 dihexoxythiophene regarded as spacer was used to design the D A D type conjugated polymer poly 4 7 bis 5 2 3 dihydrothieno 3 4 | 3 4 Dihexoxythiophene as spacer is used to design D A D type polymer. The 46 optical contrast is one of the highest values in neutral green polymers. The energy storage state could be monitored by appearance color of polymer. |
S1385894720305659 | Little information can be obtained about the effect of soil type on the degradation of polychlorinated biphenyls in the pyrophosphate chelated Fenton like reaction that has been proven as a promising means for soil remediation . Thus red soil paddy soil fluvo aquic soil and black soil were chosen as representative soils located in different regions of China to systematically investigate effects of soil type on the degradation efficiency and initial rate constant | PCB removal in four soils was different at the Fe PP ratio of 2 1 or 1 2 except 1 1. The initial rate constant. of PCBs showed an order of RS BS PS FS. The soluble Fe. and availability of H. among four soils controlled. values. SOM and carbonate caused diverse availability of H. among four soils. Soil constituents controlled soluble Fe. through adsorption and hydrolysis pathways. |
S1385894720305660 | In this work we assess two electrochemical reactor designs to reduce hexavalent chromium diluted in rinsing waters from the electroplating industry . One reactor has a dynamic electrode composed of rotating rings electrodes and the other is a novel design that has static electrodes with two pitched blade turbines . The SE named Electro Baffles disrupts the tangential flow induced by impellers and promotes the electrochemical reactions . The hydrodynamic behavior of both designs was assessed by Computational Fluid Dynamic using the multiple reference frame approach . Experimental measurements of the mixing and treatment times to validate the results were performed . The rotational velocity of the RRE was150 rpm the optimum rpm reported while for the impellers of the other design two speeds were tested one operated at the same rpm as for RRE and the other at 362rpm to operate it at the same Reynolds Number | The electrochemical reactor performance to remove Cr VI was improved. The RRE limits the pumping effectiveness due to the poor axial circulation. Using electro baffles and PBT impellers reduce energy consumption. Reducing the spacing between impellers improves hydrodynamic behavior. The use of static electrodes with PBT impellers increases pumping effectiveness. |
S1385894720305684 | CO is a main component of syngas produced by the thermal gasification of biomass . The biological conversion of sole CO into medium chain carboxylates has attracted considerable attention although the process has a low efficiency . The present study demonstrated a process to achieve efficient MCCs production from short chain carboxylates namely acetate and n butyrate with CO as electron donor . Results demonstrated that n butyrate as an electron acceptor was superior to acetate and the control . The highest n caproate concentration was obtained in reactor 160B while it can reach only 2.7 and 0mM in reactors 80A and C respectively . The lag phase for n caproate production with n butyrate as electron acceptor was significantly lower than that with acetate or control . The microbial community composition of chain elongation bioreactors showed that | N butyrate was more suitable for MCCs production than acetate with CO as electron donor. The highest n caproate concentration was obtained at 160mM n butyrate. was responsible for performing chain elongation. A thermodynamic model showed the superiority of n caproate production from n butyrate. |
S1385894720305696 | The study examines the interaction of process conditions of a mechanochemical process in a planetary ball mill . The investigated Knoevenagel condensation of vanillin and barbituric acid exhibits sigmoidal feedback kinetics under solvent free conditions . The temperature development in the non cooled chamber increases the reaction velocity along the process . In contrast to mere grinding processes that are determined by the stressing intensity the mechanochemical process is thus mainly dependent on the power input which is connected to the heating rate . Consequently significantly different temperatures are obtained by the time of full conversion depending on the process parameters . Finally lowest energy demands are reached at shortest reaction times for the Knoevenagel condensation in a planetary ball mill . However a thermal treatment of educt powders under steady mixing but without particle refinement do not result in a sufficient yield . | Study on mechanochemical Knoevenagel reaction correlating experiment and simulation. High power identified as optimal due to highest heating rates. Maximum energy efficiency occurs simultaneously with shortest reaction times. Simulations applicable to calculate power and thus optimum setting in advance. Ostensible autocatalytic effect attributed to direct crystallization at dry state. |
S1385894720305714 | Iron activating persulfate has been recently used to pretreat waste activated sludge to enhance short chain fatty production especially acetate production . However details of how iron activating persulfate enhances acetate production remain largely unknown and direct use of scrap iron or powder iron causes either iron precipitation or loss which would limit its practical application . This work therefore aims to provide such supports in an iron electrode activated persulfate system . In the study before anaerobic fermentation WAS was pretreated in IEAP reactors which employed sheet iron as anode and contained persulfate . Experimental results showed that when WAS was pretreated by IEAP 100mA and 50mg | IEAP pretreatment enhanced total SCFAs production in sludge fermentation. IEAP pretreatment promoted acetate yield remarkably. IEAP pretreatment decreased the acetate consumption but have inverse impact on propionic acid and sulfate. IEAP pretreatment altered community structure and stimulated the growth of SRB. |
S1385894720305726 | Synthesizing high efficient oxygen reduction reaction catalyst is crucial for electrochemical technologies such as fuel cells . Herein we proposed a covalent organic polymers derived carbon with cobalt oxides incorporation as ORR electrocatalysts for fuel cells . The Co N C COPs was demonstrated to possess sufficient active sites and uniformly dispersed cobalt and nitrogen elements . The as prepared Co N C COPs at 800C showed the best ORR catalytic activity with a half wave potential and limiting current density 3.99mAcm | Facile synthesis of cobalt oxides incorporated covalent organic frameworks. High catalytic activity poison tolerance and good durability of Co N C COPs. Co N C COPs prepared at 800C exhibited the best ORR catalytic activity. Power output of Co N C COPs cathode is similar to Pt C cathode in MFC and DFFC. |
S1385894720305738 | The widespread use of pharmaceuticals and personal care products is posing serious environmental issues and it is imperative to develop an effective treatment for removing PPCPs . Herein we used a binary metal oxide of dibismuth copper oxide CuBi | A reaction system was built from PMS activation and photocatalysis over CuBi. Highly efficient ability for removing PPCPs was achieved. and h. were determined to be dominant active species. Mechanism based on photocatalysis and transformation of Bi Cu ions was proposed. |
S138589472030574X | It is challenging to simultaneously improve the toughness and self healing ability of thermoplastic polyurethane due to mutually exclusive dependence on chain motion and hard phase . In this work a novel poly was synthesized by using 2 6 diamimopyridine and cystamine as chain extenders and subsequently complexed with Zn | 2 6 Diaminopyridine and cystamine based self healable PUU elastomers. Hard phase is significantly influenced by formation of coordinative bonds. Loosely packed hard segments facilitate self healability and toughening. Coordinative bonds restricting chain dislocation contributes to toughening. A self repairable and robust sensor with high sensitivity is explored. |
S1385894720305763 | SnTe is an emerging lead free IVVI thermoelectric compound but the high hole concentration low Seebeck coefficient and high thermal conductivity limit its thermoelectric performance . In this work we investigated the effect of | type AgBiSe. can effectively neutralize the excessive hole in. type SnTe. Moderate AgBiSe. alloying leds to valence band convergence effect. is decreased by enhanced phonon scattering of point defect and nanoprecipitate. Multiple effects of AgBiSe. alloying synergistically yield a. of 1.02. |
S1385894720305775 | Polyethylene glycol containing solid solid phase change materials based on conventional chemical cross linking avoid the leakage of the materials in the phase transition processes but they can not be reprocessed due to their permanent cross linking network giving rise to non recyclability of the materials . In this paper we prepared a PEG containing solid solid PCM based on dynamic ferric ion cross linking which is in solid state even at 90 . Moreover it can be reprocessed in an acidic solution at room temperature because of the dynamic ion cross linking network . This solid solid PCM has excellent thermal energy storage capacity and thermal stability and its chemical structure thermal property crystallinity and thermal stability are all unchanged after reprocess displaying constant performance for thermal energy storage . | A PEG containing solid solid PCM based on dynamic ferric ion cross linking was prepared successfully. This PCM can be reprocessed in an acidic solution at room temperature because of the dynamic ion cross linking network. The chemical structure thermal property crystallinity and thermal stability of the PCM are all unchanged after reprocess. |
S1385894720305787 | Energetic coordination polymers as a new class of energetic materials have attracted extensive attention in recent years . However controllable modulation of mechanical sensitivities and the establishment of structure function theoretical models of ECPs to meet different applications remain great challenges . Herein we designed and synthesized four azide based ECPs Cd | Four novel azide based ECPs are prepared via the efficient method. Compound. features scarce insensitivity among azide based ECPs. Two new structural models have been first proposed for elucidating different sensitivities. |
S1385894720305805 | Flexible and efficient electromagnetic interference shielding materials are urgently needed to satisfy the requirements for electromagnetic protection with the rapid popularization of wearable and the second generation of flexible electronic technology . Herein lightweight and flexible silicone rubber silver plated hollow glass microspheres EMI shielding composite foam with gradient structure was prepared through supercritical carbon dioxide scCO | Lightweight and flexible silicone rubber foams with gradient structure were firstly prepared. The shielding network of composite foam was enhanced through density induced effect. The conductivity of the composite foam can reach up to 279.3 S m at 0.51vol Ag. The composite foam displays an EMI SE of 30.5dB at thickness of only 0.7mm. The silicon rubber foams present excellent EMI SE stability after 1000 bending. |
S1385894720305817 | Potassium ion batteries have aroused intensive interests as a promising alternative to lithium ion batteries for large scale energy storage however the lack of high performance anode material is one of the key challenges for their development which is mainly caused by the large size of potassium ions inducing severe volume change and pulverization of anode materials . Here we report a FeSe | Novel FeSe. nitrogen doped carbon composite have been fabricated. The composite was applied as anode material of potassium ion batteries. The composite demonstrates superior cycle stability and rate capability. |
S1385894720305829 | Highly efficient and cost effective electrocatalysts towards both oxygen evolution reaction and hydrogen evolution reaction are critical for the large scale and environmental friendly hydrogen production . Here we report the facile synthesis of a novel bifunctional catalyst mesoporous Co | Mesoporous Co. with surface epitaxial S doped CoO layers is synthesized. Excellent OER and HER activity and stability in 1M KOH is achieved. The current density for overall water splitting reaches 10mAcm. at 1.60V. DFT calculations suggest faster carrier transport after S doping. |
S1385894720305842 | Continuous processes are always preferred over batch ones when reproducible and scalable industrial procedures are needed . This work illustrates the production of magnetite nanoparticles by oxidative precipitation in aqueous media following a continuous approach that offers additional advantages . Particularly the developed reaction setup succeeds the complete separation of the green rusts precipitation from Fe | Industrial scale preparation of low cost magnetite nanoparticles. Transfer of laboratory synthesis to a continuous flow process. Method based on oxidative precipitation of Fe. controlled by OH. excess. Nanoparticles dimensions range from 40 to 300nm. Improved magnetic hyperthermia efficiency validated for developed nanoparticles. |
S1385894720305866 | The construction of multimodal targeting and therapeutic platforms is a promising strategy for combating multidrug resistant bacteria associated infections . We report a dual targeted antibacterial platform integrating a synergistic chemo photothermal effect based on the boronic acid functionalized graphene based quaternary ammonium salt . When located at the sites of Gram negative bacteria associated infections B CG QAS was able to specifically bind to the bacteria and their biofilms via the dual effect of electrostatic adhesion and covalent coupling resulting in a superior targeting ability over the single targeted agents improved bactericidal efficacy a reduced dose of QAS and minimized chemotherapeutic photothermal toxicity . In addition to the QAS mediated antibacterial effects NIR laser irradiation onto CG could further improve the antimicrobial effect via the synergy of hyperthermia . On the other hand QAS could disrupt the bacterial cell membrane and improve its permeability and sensitivity to heat . Moreover B CG QAS could be effectively utilized for synergistic chemo photothermal therapy against the | A multimodal targeting and therapeutic platform B CG QAS is fabricated. B CG QAS can specially target MDR Gram negative bacteria and their biofilms. B CG QAS can show synergistic chemophotothermal antibacterial effect. B CG QAS exhibits outstanding biocompatibility both. and. B CG QAS can control the. infections and accelerate wound healing. |
S1385894720305878 | Increasing application of rare earth elements in electronics renewable energy biomedical devices and industrial products has increased their demand globally . Enhanced production of industrial and electronic wastes has led the researchers to focus on the REE recovery from these alternative economic sources . Recent developments in bioprocess technology have created suitable avenues of REE recovery from waste materials . This review focuses on secondary sources of REE including industrial wastes mine wastes and electronic wastes . Detailed mechanisms of REE biorecovery from waste mineral sources have been discussed elaborately . The influence of physico chemical operational parameters on the efficiency of REE biorecovery from source materials has also been thoroughly elaborated . Analyses in terms of economic perspectives indicate that REE biorecovery from waste materials may be a cost effective approach . This review directs future research towards the development of enhanced REE biorecovery from wastes on a large commercial scale . | There is an increasing worldwide demand for REEs and a limited global supply. Several industrial and e wastes have been used as sources for biorecovery of REEs. Bioaccumulation dissolution and bioprecipitation are main biorecovery mechanisms. Key biorecovery factors include pH redox potential temperature and aeration. |
S138589472030588X | Uranium adsorption and recovery becomes more and more important with the rapid growth of the nuclear industry . Compared with the typical uranium adsorbents such as inorganic materials carbon based materials porous organic framework and traditional resin fibrous polymer materials show the advantages of high adsorption capacity fast adsorption kinetics good selectivity favorable tolerability and outstanding reusability because of their unique one dimensional structure excellent mechanical performance and rational surface functionality . This review is mainly focused on the fibrous polymer materials based adsorbents for the highly efficient adsorption and recovery of uranium . The architecture together with the regulation of the surface functional groups for uranium adsorption is discussed . The strategies to enhance the adsorption performance including the size control multi level functionality and immobilization by inorganic materials are highlighted . Additionally the adsorption mechanism has also been discussed . Finally the suggestions and future research perspective are provided for better design of new types of fibrous polymeric adsorbents . | Fibrous polymer materials based adsorbents for uranium adsorption and recovery are illustrated. Strategies to enhance the adsorption performance for uranium are highlighted. Perspectives and challenges about the uranium adsorption from seawater are presented. |
S1385894720305891 | Solid state supercapacitors hold great promise in the application in portable and wearable electronic devices due to their great progress in electrochemical performance and fabrication technique in recent years . However in consideration of increasingly harsh requirements toward electronic devices in miniaturization and operational security the management of thermal generation and dissipation in SSC devices which have been rarely considered at present are very worthwhile to be investigated . In this work flexible solid state supercapacitors are assembled by rationally designed electrodes which are fabricated layer by layer by using of an electrochemically exfoliated graphene nanosheet film a porous metallic Ni layer and a NiMnLDH pseudocapacitive material layer . The ultrathin NiMnLDH nanosheets and the porous metallic Ni layer ensure high electrochemical performance for the NiMnLDH Ni EG electrodes 2110.4 mF cm | A layered Ni graphene film supported NiMnLDH electrode for supercapacitor is fabricated. The NiMnLDH Ni EG electrode shows super thermal and electrical conductivities. The rationally designed electrodes demonstrate an effective thermal management strategy for supercapacitors. |
S1385894720305908 | Sputtering followed by post annealing is extensively used for fabrication of copper indium gallium selenide copper zinc tin sulfide and copper zinc tin sulfur selenide thin film solar cells . In this work Sb | An effective combination reaction of Sb metallic precursors for efficient Sb. Se. solar cell. Self assembled growth of stoichiometric Sb. Se. thin film with desired orientation. An over thick MoSe. interfacial layer could be effectively suppressed. The highest PCE of 6.15 in sputtered Sb. Se. thin film solar cell with excellent stability. |
S138589472030591X | The reaction pathways and chemical kinetics of tryptophan and its products were elucidated under hydrothermal conditions from experiments at 265 280 295 and 310C . Tryptophan participates in several primary reactions leading to the formation of six identified primary products . The primary reactions include decarboxylation deamination and cleavage of CC bonds . Several of the primary products are also formed via secondary reactions . A chemical kinetics model based on the reaction pathways provides excellent correlation of the experimentally observed trends . The model indicates that both the reaction temperature and the initial concentration of tryptophan are influential on the selectivity of the parallel primary reaction pathways as formation of higher molecular weight products directly from tryptophan is a second order reaction and has the highest activation energy . These new results and the reaction model provide insights into the chemistry that occurs during hydrothermal valorization of proteinaceous biomass . | Tryptophan undergoes decarboxylation deamination CC bond cleavage. High initial concentrations of tryptophan promote inclusion of N into bio crude oil. Mild temperatures promote formation of aqueous soluble products. |
S1385894720305933 | Integrating two dimensional transition metal sulfide nanostructures with the semiconductor materials is one strategy to improve their photocatalytic performance . Herein for the first time supporting noble metal free Co | A special 2D 3D Co. Mo. TiO. film shell photocatalyst is constructed. This hybrid nanostructure endows improved light harvesting capacity. The introduction of 2D film boosts the charge separation efficiency. A H. evolution rate as high as 44.43mmolh. is achieved. |
S1385894720305957 | Spatially resolved data for biofilm structure can often not be assessed easily in bioelectrochemical setups due to the orientation and placement of anode and cathode . However understanding the interplay of biofilm development and electrochemical parameters is crucial for optimizing bioelectrochemical biofilm systems . For example to produce value added products . This study thus presents a versatile flow cell setup allowing for control of hydrodynamic substrate and nutritional conditions as well as physical parameters . Here a versatile lab scale flow cell system equipped with a cathode and an anode is presented to monitor the growth of | Spatially and time resolved monitoring and quantification of electroactive biofilm. Biofilm accumulation rate reaches its maximum when substratum is covered entirely. Abiotic biotic processes on the working electrode correlate with biofilm development. At an optimum. of 75m. the biofilm achieved a stable. of 13A cm |
S1385894720305969 | Several single dose studies found that biochar was an effective additive promoting methanogenesis in anaerobic digestion . However little attention was paid to the continuity of the biofilm formed on biochar and the subsequent evolution of microorganisms . In this study the continuous performance and changes were quantified when biochar biofilm consortia were applied as the recyclable inoculant to four cycles of acetate methanogenesis with increasing acetate loading . Biochar biofilm consortia as the inoculant were found to consistently realize stable methane production despite the removal of planktonic microorganisms in the reactor and no extra inoculum and biochar were added . Consortia with biochar particles smaller than 5m promoted initiation of methanogenesis more rapidly than those with biochar particles larger than 1mm especially when the activity of microorganism was low . Moreover the microorganisms were enriched throughout the continuous cycles . Biochar 5m was found to accumulate 6.67.1 E 11 16S copies per gram in the 3rd and 4th cycles which was about 2751 times that of biochar 1mm and also comparable to a fresh sludge inoculum . In addition specific functional methanogens proliferated during continuous application . | Recycled biochar biofilm consortia demonstrated feasible long term application in AD. Biochar 5m more efficiently initiated methanogenesis than biochar 1mm. Biochar 5m enriched 20 times more microorganisms than larger biochar. dominated in biochar 1mm while SAOB dominated in biochar 5m. |
S1385894720305970 | Metal organic frameworks have attracted considerable research attention due to their functional characteristics such as tailorable architecture and adjustable pore sizes . In particular the assembly of such MOFs has been widely studied because of their unprecedented physicochemical properties . In this paper a strategy is presented for the synthesis of nanostructure tunable MOFs assembled within reduced graphene oxide nanosheets via colloidal spray pyrolysis process . The spray pyrolysis of Prussian blue nanocubes and graphene oxide nanosheets dispersed in an aqueous solution and the subsequent sulfidation heat treatment yields Prussian blue analogue nanocubes with a hollow interior and porous walls encapsulated within rGO . Through spray pyrolysis process large scale synthesis of nanostructure tunable MOFs assembled within rGO nanosheets could be realized in one pot process . The MOFs can be uniformly encapsulated within rGO nanosheets through spray pyrolysis process which is beneficial for improving cycle and rate performances when applied as the anode material for sodium ion batteries . In particular the rGO matrix acts as a highway for electron transport resulting in remarkable discharge capacities of 413mAhg | Synthesis of MOFs assembled within a reduced graphene oxide ball via spray pyrolysis is studied. Composite of hollow NiCo S. nanocubes and reduced graphene oxide show excellent sodium ion storage performances. Composite microspheres show reversible capacities of 413mAhg. even at a current density of 10 A g |
S1385894720305994 | With the rapid growth of electronics and telecommunication there is an intensive requirement for developing electromagnetic interference shielding technique to prevent malfunction of electronic equipment and threats to human health from electromagnetic waves . Herein we demonstrate a multifunctional EMI shielding skin which not only shows an excellent EMI shielding effectiveness but also can play a role as a pressure sensor . The EMI shielding skin consists of freestanding foam structured graphene reinforced poly matrix . The graphene foam is decorated by Fe | Fe. nanoparticles intercalated Ti. was coated on graphene foam to form a multifunctional EMI shielding skin. The composite with a thickness of 1mm exhibited an excellent EMI SE of 80dB in X band and 77dB in Ka band. The composite showed a possibility to use as a pressure sensor. |
S1385894720306008 | The interfacial structure plays a key role for photoinduced charge transfer and molecular activation in heterogenous photocatalysis . However the specific interfacial electronic structure of heterostructure and its effect on the photocatalysis reaction have remained unclear . Herein insulator based heterostructure CaSO | CaSO. insulator based heterojunction was constructed for the first time. Electron rich heterojunction interface promote the activation of small molecules. The formation of activated reactants facilitated the photocatalytic reactions. Much more amount of superoxide and hydroxyl radicals could be produced. The electron rich heterojunction provides pathways for inert pollutant conversion. |
S138589472030601X | 4 Chloro 3 5 dimethylphenol as a typical antimicrobial compound has been widely used in medical products and cosmetics and has been detected in municipal wastewater . Significant concerns about its persistence and potential toxicity has been paid to in the aquatic environment . In this study we explored UV and UV persulfate advanced oxidation process as potential options to remove PCMX for the first time . A steady state kinetic model was established to simulate the experimental results and to predict the concentration of reactive oxidant species under different reaction conditions . The second order rate constants for PCMX reacting with SO | The second order rate constants of PCMX with SO. and HO. were determined. Degradation of PCMX was predicted by the steady state kinetic model under various conditions. Density functional theory was applied to identify the radical reactive sites of PCMX. Six main elimination pathways were proposed based on HPLC MS MS analysis. Accurate toxicity of forty seven byproducts was calculated via the QSAR method. |
S1385894720306021 | The introduction of graphene into biochar can effectively and economically improve the capabilities of biochar for environmental applications . Graphene containing biochar derived from biological solid waste such as sugar cane trash coconut shell old corrugated cardboard packages and chicken feather possess a lot of improvement in physicochemical properties as compared to raw biochar . Consequently graphene containing biochar demonstrates a greatly enhanced environmental remediation potential . However the production of graphene containing biochar from biological solid wastes and its characterization and potential use for the remediation of organic and inorganic pollutants in the environments have not been critically reviewed up to date . Therefore we aim to summarize the state of art knowledge about graphene containing biochar preparation and its environmental applications . Furthermore five types of preparation techniques for graphene containing biochar and their applications for water remediation have been reviewed and discussed iron based catalytic methods for graphene like biochar carbonization with natural multilayered materials for graphene like biochar hummers method oxidation and exfoliation by strong acid and KMnO | Iron based catalysts are good catalysts for preparation of graphene like biochar. Graphene biochar composite exhibits properties superior to parental materials. Multiple electron donors exist in graphene containing biochar. Sorption and catalytic capability can be improved by graphene containing biochar. |
S1385894720306033 | A new polyethersulfone composite membrane using nanostructures of polyaniline and reduced graphene oxide was prepared by the phase inversion process . The investigation focused on the use of PANI and rGO as conductive dopants along with camphorsulfonic acid and dodecylbenzene sulfonic acid for PANI preparation . Higher conductivity was obtained for the membrane doped with PANI DBSA 4.50.3Scm | Electrically conductive PES PANI rGO membranes were prepared using phase inversion process. PANI and rGO additives improved the membrane conductivity hydrophilicity and permeability. Fouling studies of the PES PANI rGO 0.2g membranes revealed less propensity to organic fouling. Application of external voltage reduced fouling for this electrically conductive membrane. |
S1385894720306045 | In this study magnetite zeolite was successfully synthesized to use as a feasible and cost effective cathode catalyst for enhancing methane generation in a microbial electrochemical system . The novel MZ catalyst consists of hydrophilic zeolite cores and conductive magnetite nanoparticles for enhanced electroactive biofilm development on the cathode by facilitating micro channels for nutrient diffusion increased surface area and reduced charge transfer resistance . The MES using an MZ cathode achieved a maximum methane yield of 0.380.010 LCH | Magnetite zeolite MZ was synthesized as novel cathode catalyst in MES. Electrochemical analyses proved superior catalytic activity of MZ for methanation. Current generation substrate and VFAs removal rate were promoted in MES MZ. MZ catalyst facilitated electron transfer by lowering cathode overpotential losses. |
S1385894720306082 | Catalytic denitrification is a promising technology for the removal of nitrate through its reduction by a reducing agent with the assistance of a catalyst . In this work the modification of the silica catalyst support surface with amino groups was found to effectively enhance both nitrate reduction activity and nitrogen selectivity of Pd | The silica catalyst support surface was modified with amino groups. Pd. Cu. alloy bimetallic nanocatalyst was active for catalytic denitrification. Enhanced nitrate nitrite reduction efficiency and N. selectivity were achieved. In situ buffering effect was from amino groups to adsorb CO. to neutralize. OH group. Recyclability was enhanced by hindering copper oxidation during catalyst collection. |
S1385894720306094 | Phase change materials can store and release great amount of thermal energy during the phase change and thus have broad application prospects in thermal energy management waste heat recovery building energy conservation and other fields . However the before and after state changes of PCMs are often accompanied by liquid leakage thus severely limiting their application . Introducing supporting materials can solve this leakage problem but at the expense of phase change enthalpy and service life . Herein a novel comb like structural phase change composite with high latent heat was designed by using poly chain which tightly intertwines with a comb like structural phase change supporting material under induced dipole force due to structural compatibility . This material can achieve shape stability and obtain high phase change enthalpies . Furthermore the composite does not show phase separation due to the good compatibility and its phase change temperatures and enthalpies can be adjusted by regulating the content and molecular weight of the loaded PEG . | A novel comb like structural phase change energy storage materials with high latent heat was designed. Induced dipole force leads PEG to composite with the comb like structural phase change supporting material. The composite has high phase change enthalpies 168.9200.3J g . The composite exhibits excellent shape stability and does not show phase separation. |
S1385894720306100 | Heterogeneous photo Fenton reaction with iron based magnetic materials has been proposed as an alternative to the homogeneous Fenton process to remove contaminants of emerging concern because of the low cost facile recovery and reuse . The iron based material is not only a reservoir to maintain an effective concentration of iron in solution but it also activates H | The effect of HA coating on MPs was studied in photo Fenton like process. XPS allowed to relate iron surface speciation with photo Fenton reactivity. Humic acid coating enhances the catalytic efficiency for 4 CP degradation. The efficiency of MP HA was tested by degrading CECs in real wastewater sample. |
S1385894720306112 | Developing bioresourced epoxy resin with excellent flame retardancy is challenging for satisfying environmental and fire hazard requirements . Herein a novel monomer with six functional epoxy groups was successfully synthesized by combining eugenol with hexachlorocyclotriphosphazene . Using aliphatic diamine as a curing agent a novel epoxy of EHPE D230 was prepared and its properties were systematically evaluated . Compared with commercial epoxy resin EHEP D230 possessed a higher tensile strength and better thermal resistance T | An epoxy monomer based on eugenol and cyclotriphosphazene was synthesized. The resultant thermoset has high strength thermal stability and nonflammability. Its unique char makes a contribution to flame retardancy. |
S1385894720306124 | Bone implant associated infection is one of the major concerns in orthopedics and may even result in implant failure . To this end we developed a strategy for the fabrication of an antibacterial coating on titanium implants with pH response to combat bacteria mediated acidification of the local microenvironment . It includes three steps first we synthesized levofloxacin loaded zeolitic imidazolate framework 8 | The. LBL coating is fabricated on titanium implants. The coating displays pH response while then inducing alkaline microenvironment. The surface coated titanium implants show strong antibacterial activity. The fabricated biocompatible titanium implants enhance bone formation |
S1385894720306136 | Soy protein based adhesives showed great potential for replacing petroleum derived formaldehyde adhesives in the commercial wood industry . However soy protein adhesives have several problematic limitations particularly with respect to low water and mildew resistence . As such in order for soy protein based adhesives to be practically applicable on an industrial level a multi function bio based crosslinker that resolves both low water and mildew resistance must be designed . In this study we synthesized a multifunctional crosslink agent by reacting soybean derived daidzein with epichlorohydrin and incorporating it into soy protein to parpare a 100 bio wood adhesive with significantly improved water and mildew resistances . The results showed that by using 6wt DDE in the adhesive formulation the dry and wet shear strength of plywood bonded with the SPI DDE adhesive increased by 52.3 and 164.4 respectively compared with that of SPI adhesive and was shown to be 22.3 and 69.6 higher than that of the industrially used SPI PAE adhesive . These improvements were attributed to formation of double cross linked network and elevated adhesive toughness . Furthermore the resultant adhesives mildew resistance property were also improved with the addition of DDE which extended the shelf life of adhesive and durability of the resultant plywood . Thus this resultant DDE can be used to improve the mechanical properties and mildew resistance for bio hydrogels or bio based composites and polymers . | The soybean derived daidzein was epoxidized to develop a bio based crosslinker DDE . DDE was used to modify soy protein adhesive to form a 100 bio based wood adhesive. Using 6 DDE the dry and wet shear strength of plywood increase by 52.3 and 164.4 . DDE improves adhesives mildew resistance and extends adhesives shelf life to 12h. |
S1385894720306148 | Thermoregulating textiles are highly demanded for both human health and labor productivity especially in hot working environments . It is challenging to balance wearability and thermal insulating property as they usually demand for opposite porosity . Here learning from the porous structure of polar bear hair we report a polyimide aerogel fiber obtained by a freeze spinning technique . A textile woven with such polyimide fiber is thermally insulating strong and highly stretchable fire retardant and temperature resistant . Additionally it can be readily incorporated with other functions such as acid alkali resistance and thermoregulation by surface modification and infiltration of phase change material . All these properties indicate its potential in protective clothing in hot environments . With the versatility and scalability our approach paves a new way for fabricating smart textiles with well defined microstructure and multifunctionality by learning from nature . | Overcome fragileness of polyimide aerogels by building biomimetic porous structure. The fiber is mechanically strong and highly stretchable at a high porosity. The fiber shows excellent thermal insulation property even at up to 500C. Other functions such as acid alkali resistant and thermoregulation. |
S1385894720306161 | UV nanoimprinting lithography has the merits of high throughput and resolution low cost of manufacture and room temperature operation and thus finds wide applications in various fields . Herein a novel disulfide bond containing photoresist for UV nanoimprint lithography was designed and prepared based on the disulfide compound 2 2 dithiodiethanol diacrylate isobornyl acrylate and methyl methacrylate . The addition of DTDA could obviously enhance the double bond conversion polymerization rate 19 s | A disulfide bond containing UV NIL photoresist is prepared. The photoresist has extremely low volume shrinkage 0.93 . The photoresist has an excellent degradation ability in the presence of tributyl phosphine. The photoresist manifested an outstanding pattern transfer ability. The photoresist exhibits good photopolymerization mechanical and thermal performance. |
S1385894720306173 | Multifunctional organic luminescent materials have attracted intensive interests . Nevertheless the mechanisms behind them are still to be explored . In this work we reported four multifunctional emitters with thermally activated delayed fluorescence aggregation induced emission multicolor mechanochromic luminescence and polymorphism . We also demonstrated their applications in acid base responsive on off chemosensors ink free rewritable paper and organic light emitting diodes . By deeply analyzing their three dimensional supramolecular frameworks with ordered micro pores and different intermolecular interactions in crystal structures we revealed the underlying mechanisms of polymorph dependent TADF and multicolor MCL simultaneously . | Smart organic emitters exhibit TADF polymorphism AIE and multicolor MCL features. Unique 3D supramolecular patterns unveil polymorph dependent TADF and multicolor MCL. Applications in acid base chemosensors rewritable paper and OLED are demonstrated. |
S1385894720306185 | In this study polyhydroxyalkanoates production integrated with the via nitrite nitrogen removal from anaerobic reject water was investigated at pilot scale under long term period . The pilot plant was located in Carbonera wastewater treatment plant and comprised the following units i rotating belt dynamic filter for the recovery of cellulosic primary sludge ii fermentation unit for the production of volatile fatty acids iii ultrafiltration unit for solid liquid separation of the fermented sludge iv nitritation sequencing batch reactor for the oxidation of ammonia to nitrite v selection SBR where aerobic feast and anoxic famine conditions were established to select PHA accumulating biomass and vi an accumulation SBR were intracellular PHA content was maximized through the feed on demand strategy . Results showed that around 80 of the influent ammonia was efficiently removed by the system when both N SBR and S SBR operated with volumetric nitrogen loading rate of 1.641.72 kgN m | Sidestream PHA production was integrated with the treatment of anaerobic reject water. PHA represents up to 17.5 of the total COD recovered. Potential sidestream PHA production from municipal wastewater was 1.2 kgPHA PE year. The integrated PHA production in WWTPs allows a potential revenue of 2.25.9 PE year. |
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