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SSRN 2023年

作者： Shi, Qingwen Liang, Jinxing Wang, Xuyi Yao, Kaixiang Tang, Yidan Pan, Chen Sun, Jiuxiao Liu, Rui Tan, Haiying Tang, Tao State Key Laboratory of New Textile Materials and Advanced Processing Technologies Key Laboratory of Textile Fiber and Products of Ministry of Education College of Materials Science and Engineering Wuhan Textile University Wuhan430200 China School of Computer Science and Artificial Intelligence Wuhan Textile University Wuhan430200 China High-Tech Organic Fibers Key Laboratory of Sichuan Province and China Bluestar Chengrand Co. Ltd China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun130022 China

Fire detection plays a crucial role in maintaining the safety of people's lives and property. However, most early fire detectors are designed to monitor the current or voltage changes of the sensing materials, which require external power supplies. It is still a challenge to make rapid and accurate noncontact early fire detection in precombustion due to the lack of reliable alarm signals. Herein, inspired by the discoloration of chameleon skin, we developed an early fire warning sensor (EFWS) by coating photonic crystals (PCs) on a plastic sheet with thermal expansion properties. Monodispersed zinc sulfide (ZnS) was coated on the plastic sheet as abnormal detection component for EFWS. Combined with the intelligent image recognition algorithm, the EFWS was designed and gave warnings for 0.9s at 260 °C. For the first time, a non-contact real-time monitoring strategy based on PCs EFWS in precombustion is developed. The sensing material can be directly pasted on the surface of the detected equipment, and combined with existing surveillance cameras in the detection area, early warning of fires can be achieved without additional equipment. The EFWS system can be used in fire alarms for aircraft, buildings, electrical appliances, substations, and other places in the future. © 2023, The Authors. All rights reserved.

关键词： Zinc sulfide

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Enhanced Flexoelectric and Piezoelectric Pairing of Bent Polyvinylidene Fluoride (Pvdf) Membrane with Two-Dimensional (2d) Stannic Sulfide-Bismuth Oxychloride (Sns2-Biocl) Heterojunction

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SSRN 2024年

作者： Li, Wen-Ming Zhang, Hui Dai, Chen-Min Miao, Jiao-Jiao Fan, Wei Song, Qing-Wen Xia, Liang-Jun Xu, Wei-Lin Key Laboratory of Functional Textile Material and Product of Ministry of Education School of Textile Science and Engineering Xi'an Polytechnic University Xi’an710048 China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and Technology Suzhou University of Science and Technology Suzhou215009 China Interdisciplinary Research Center of Biology & Catalysis School of Life Sciences Northwestern Polytechnical University Xi’an710072 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

In this study, n-type stannic sulfide (SnS2) nanosheets and p-type bismuth oxychloride (BiOCl) nanosheets prepared by hydrothermal method are utilized to construct the heterostructure SnS2-BiOCl composite through ultrasonication and grinding procedures. The piezoelectric SnS2-BiOCl heterojunction nanosheets are incorporated into the ferroelectric polyvinylidene fluoride (PVDF) membrane to fabricate the PVDF-based SnS2-BiOCl (PVDF-SnS2-BiOCl) flexoelectric strain sensor. The optimal amount of SnS2-BiOCl heterojunction in the PVDF-SnS2-BiOCl membrane is determined. A thorough analysis is conducted on the impact of bending curvature, frequency of bending, the size and thickness of the membrane, water flapping, underwater bending, resistance to fatigue from repeated bending, and resistance to corrosions from acid and alkali on the membrane's output current and voltage. The experimental and density functional theory (DFT) calculation results indicate that the PVDF-SnS2-BiOCl(2:1)-10% membrane, functioning as a smart strain sensor, has the ability to monitor human joint movements and water fluctuations in different situations. Additionally, it can be used as a coating for polyester and linen fabrics and can be connected in series or in parallel. The experimental findings align closely with the results obtained from DFT calculations. The outcomes demonstrate that the PVDF-SnS2-BiOCl membrane strain sensor, which is highly flexible, sensitive, and attachable, is well-suited for smart wearable electronic materials. © 2024, The Authors. All rights reserved.

关键词： Heterojunctions

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In-Situ Growth of Robust and Superhydrophilic Nano-Skin on Electrospun Janus Nanoﬁbrous Membrane Toward Ultra-High Separation Efficiency, Long Cycle Stability, and Antibacterial Activity of Oil/Water Emulsions Separation

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SSRN 2023年

作者： Cheng, Bingbing Yan, Song Li, Yushan Zheng, Long Wen, Xianjie Tan, Yeqiang Yin, Xianze College of Materials Science and Engineering State Key Laboratory of New Textile Materials & Advanced Processing Technology Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing Engineering Research Center of Ministry of Education for Clean Production of Textile Printing and Dyeing National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan430200 China Department of Anesthesiology The Second People’s Hospital of Foshan City Guangdong Province Foshan528000 China State Key Laboratory of Bio-Fibers and Eco-Textiles Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology Institute of Marine Biobased Materials College of Materials Science and Engineering Qingdao University Qingdao266071 China

It is difficult for composite fibrous membranes to achieve up to 99.5% separation eﬃciency for oil/water emulsions under cycling separation. Herein, a simple method is developed to in-situ grow surperhydrophilic nanocoating on a single electrospun polyvinylidene ﬂuoride (PVDF) fiber surface for fabricating asymmetric wettable Janus PVDF fibrous membranes. Particularly, polysaccharide fluids with zwitterionic polymer chains are generated from the nanoﬁber subsurface in an inside-out way during the electrospinning process, forming the robust superhydrophilic nanocoating (99.5 %), a high flux (up to 4325 L·m-2·h-1·bar-1), antibacterial activity (>99%) and antifoul properties. Moreover, the obtained Janus membranes own surprising flux cycling stability and retained 99.5% separation efficiency after 12 cycles without any treatment, indicating that the multi-arm polysaccharide fluids acted as the water channel in such membrane and accelerated the ﬂow of water molecules. The Janus PVDF composite membranes have potential applications for oily wastewater treatment and water purification in the future. © 2023, The Authors. All rights reserved.

关键词： Wastewater treatment

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Zearalenone Degrading Enzyme Evolution to Increase the Hydrolysis Efficiency Under Acidic Condition by the Rational Design

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SSRN 2024年

作者： Xing, Xingyue Chen, Xiaowei You, Xihuo Huang, Jie Xue, Dongsheng National "111" Center for Cellular Regulation and Molecular Pharmaceutics Cooperative Innovation Center of Industrial Fermentation Ministry of Education Key Laboratory of Fermentation Engineering Hubei University of Technology Hubei Province Wuhan430068 China School of Bioengineering and Health State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Co. Ltd Qichun 435300 China

Based on the rational design, zearalenone degrading enzyme was evolved to improve the hydrolysis efficiency under acidic condition. At pH 4.2 and 37 °C, the activity of the evolved zearalenone degrading enzyme with 8 mutation sites increased to 38.67 U/mg from the original l7.69 U/mg. Km of the evolved zearalenone degrading enzyme decreased to 75.33 µM from the original 283.61 µM. Hydrolysis efficiency of the evolved zearalenone degrading enzyme increased to 3.86 folds under imitated pig stomach condition. Molecular docking showed that the number of hydrogen bonds and pi-sigma interactions between the evolved zearalenone degrading enzyme and zearalenone increased. The evolved zearalenone degrading enzyme was valuable for hydrolyzing zearalenone under acidic condition. © 2024, The Authors. All rights reserved.

关键词： Hydrolysis

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Continuous Basalt Fibers into Fireproof and Thermal Insulation Architectures Using an Additive Manufacturing Manipulator

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SSRN 2023年

作者： Yan, Chunze Shi, Yusheng Su, Bin Liu, Zhufeng Zhang, Lichao Li, Zhaoqing Wang, Changshun Wu, Zhenhua Wu, Siqi Wu, Hongzhi Geng, Peng Chen, Si Liu, Guizhou Yang, Lei Xia, Zhigang State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan430074 China Engineering Research Center of Ceramic Materials for Additive Manufacturing Ministry of Education Wuhan430074 China Wuhan Zeqing Technology Co. Ltd. Wuhan430074 China School of Transportation and Logistics Engineering Wuhan University of Technology Wuhan430063 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

The weaving technique used for basalt fibers is suitable for making architectures with a two-dimensional (2D) structure, but in practical applications, three-dimensional (3D) structure architectures are required in many fields. Additive manufacturing (AM) technology is suitable for fabricating 3D complex parts. However, the existing AM technology is only used to process continuous basalt fibers reinforced polymers for mechanical enhancement. Therefore, here, we report the fabrication of continuous basalt fibers with fireproof and thermal insulation performance through the combination of an AM manipulator, two-step precursor infiltration and pyrolysis (PIP) processes. Using SiOC ceramics to fill between continuous basalt fibers will help improve the architectures' fire and thermal insulation performance. In order to reduce the structural defects generated by the first PIP process, the final part with fireproof and thermal insulation performance was fabricated through the second PIP process. We further demonstrated the final part with excellent fireproof and thermal insulation performance. The final part had a shell temperature of 788.8℃ and an internal temperature of about 50℃ under the flame spray gun for the 20 s. By replacing polymers with inorganic materials, our basalt architectures exhibit their potential applications in military, aviation, and civil fireproof and thermal insulation equipment. © 2023, The Authors. All rights reserved.

关键词： 3D printing

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Unraveling Photothermal-Enhanced Bulk Charge Transport and Surface Oxygen Reactions in Tio2 Photoanodes for Highly Efficient Photoelectrochemical Water Oxidation

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SSRN 2022年

作者： Liu, Xueqin Huang, Jing Wang, Jingnan Lin, Kaijie He, Bing Hu, Xiaoqin Yang, Yingkui Wang, Yang Li, Zhen State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430074 China Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education Hubei Key Laboratory of Catalysis and Materials Science South-Central University for Nationalities Wuhan430074 China

Titanium dioxide (TiO2) has been extensively used as an important photoanode material for photoelectrochemical (PEC) water splitting, but its activity is greatly hindered by the low charge transport and sluggish oxygen evolution reaction (OER) kinetics. Herein, we demonstrate spinel oxide NiCo2O4 (NCO) acted as both photothermal material and oxygen evolution cocatalyst could significantly promote the PEC performance of TiO2 photoanodes, and a high photocurrent of 2.34 mA cm-2 at 1.23 V vs. reversible hydrogen electrode has been achieved by NCO/TiO2 photoanodes assisted by photothermal effect. Importantly, a mechanism is proposed to explain the enhanced bulk charge transport and surface OER activity by an integrated various operando characterizations and density functional theory (DFT) study. Intensity modulated photocurrent spectroscopy (IMPS) analysis and DFT calculations imply the relatively high temperature induced by photothermal effect could accelerate small polaron hopping in the bulk of TiO2, which is verified by the electron diffusion coefficient variation of TiO2 with oxygen vacancies at different temperature. Operando cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) reveal that photothermal conversion facilitates the oxidation of Ni2+ at lower potential and promotes the adsorption of *OH and deprotonation of *OOH intermediates. This work provides deep insight into the photothermal-enhanced PEC performance by observing the bulk small polaron hopping and surface dynamic evolution during the PEC process, which may underpin future advances in promoting PEC and photocatalytic performances of small-polaron-type semiconductors. © 2022, The Authors. All rights reserved.

关键词： Charge transfer

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Corrosion Products Regulation of Pretreated Zero-Valent Iron by Aluminum Chloride for Enhanced Chromium (Vi) Removal and Longevity Under Aerobic Conditions

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SSRN 2024年

作者： Long, Xuejun Li, Rui Wan, Jun Zhong, Zhenxing Ye, Yuxuan Yang, Jiazhi Luo, Jun Xiao, Zhonghua Xia, Jin Liu, Yaomeng School of Environmental Engineering Wuhan Textile University Wuhan430200 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Engineering Research Center of Ministry of Education for Clean Production of Textile Dyeing and Printing Wuhan Textile University Wuhan430200 China Jiangsu Huashui Water Engineering Co. Ltd Nanjing210009 China Hubei Industrial Construction Group Co. Ltd Wuhan430076 China

The zero-valent iron (ZVI)-based material has been applied for hexavalent chromium (Cr(VI)) decontamination in wastewater treatment and groundwater remediation, but the passivation problem limited their field application. Currently, it is still a challenge to improve ZVI’s longevity and reactivity cost-effectively. In this study, we combined dissolved oxygen and aluminum chloride to regulate the corrosion products of pretreated ZVI (pcZVI-AlCl3) for enhancing its longevity and Cr(VI) removal behavior under aerobic conditions. The optimal pre-corrosion conditions were found to be 2.5 g/L ZVI, 0.5 mM AlCl3, and a 4-hour preconditioning period. Different kinds of techniques were applied to detect the properties of pre-conditioned ZVI and corrosion products. The 57Fe Mössbauer spectra showed proportions of ZVI, Fe3O4, and FeOOH in pcZVI-AlCl3 were 49.22%, 34.03% and 16.76%, respectively. Both Al3+ and Cl− contributed to iron corrosion, and the formation of Al(OH)3 in the corrosion products remarkably improved its pHpzc (point of zero charge), favoring Cr(VI) adsorption. Continuous-flow experiments showed it maintained an effluent concentration of less than 0.1 mg/L for over 1400 BV, indicating its great potential for Cr(VI) removal in field applications. The ZVI and corrosion products showed a synergistic effect in enhancing electron transfer for Cr(VI) removal. The acidic environment was beneficial to Cr(VI) removal by pcZVI-AlCl3, and it performed effectively in a high hardness condition. The mechanisms underlying Cr(VI) removal by pcZVI-AlCl3 included adsorption, reduction and precipitation. This work provides a new strategy on ZVI pre-corrosion for improving its longevity, and insights into corrosion products regulation for enhancing Cr(VI) removal. © 2024, The Authors. All rights reserved.

关键词： Magnetite

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In situ synthesis of oriented Zn-Mn-Co-telluride on precursor free CuO: An experimental and theoretical study of hybrid electrode paradigm for advanced supercapacitors

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Nano materials Science 2024年

作者： Ahmad, Muhammad Nawaz, Tehseen Hussain, Iftikhar Chen, Xi Khan, Shahid Ali Eddahani, Yassine Abraham, B. Moses Ali, Shafqat Wang, Ci Zhang, Kaili Department of Mechanical Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong A.J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering Drexel University 3141 Chestnut Street PhiladelphiaPA19104 United States Department of Chemistry The University of Hong Kong Hong Kong Department of Chemical Engineering Indian Institute of Technology Kanpur Kanpur208016 India State Key Laboratory of New Textile Materials and Advanced Processing Technologies National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan430200 China Key Lab of In-fiber Integrated Optics Ministry Education of China Harbin Engineering University Harbin150001 China

The evolution of energy storage technology has seen remarkable progress, with a shift from pure metals to sophisticated, tailor-made active materials. The synthesis of nanostructures with exceptional properties is crucial in the advancement of electrode materials. In this regard, our study highlights the fabrication of a novel, oriented heterostructure comprised of Zn-Mn-Co-telluride grown on a pre-oxidized copper mesh using a hydrothermal method followed by a solvothermal process. This innovative approach leads to the formation of the Zn-Mn-Co-telluride@CuO@Cu heterostructure, which demonstrates the unique oriented morphology. It outperforms both Zn-Mn-Co-telluride@Cu and CuO@Cu by exhibiting lower electrical resistivity, increased redox activity, higher specific capacity, and improved ion diffusion characteristics. The conductivity enhancements of the heterostructure are corroborated by density functional theory (DFT) calculations. When utilized in a hybrid supercapacitor (HSC) alongside activated carbon (AC) electrodes, the Zn-Mn-Co-telluride@CuO@Cu heterostructure-based HSC achieves an energy density of 75.7 Wh kg−1. Such findings underscore the potential of these novel electrode materials to significantly impact the design of next-generation supercapacitor devices. © 2024 Chongqing University

关键词： Electrodes

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Strain sensing elastic core-spun yarns based on long silver nanowires 2

Strain sensing elastic core-spun yarns based on long silver ...

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2021 2nd International Conference on Mechanical Engineering and materials, ICMEM 2021

作者： Jia, Liping Zeng, Qi Zhu, Quanquan Cai, Runxuan Guo, Wei Ran, Jianhua Bi, Shuguang Li, Shiwei Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing and Finishing State Key Laboratory of New Textile Materials and Advanced Processing Technologies College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan430200 China Department of Biochemistry and Molecular and Cellular Biology Georgetown University WashingtonDC20057 United States College of Physical Education Jianghan University Wuhan430056 China

Strain sensing is one of the important functions of intelligent fabric, which can transform the external stress (or strain) into visible electrical signals and monitor the characteristics of human physiology and motion. At present, the flexible strain sensor has low sensitivity, small strain range and unstable performance after repeated stretching. In this work, core-spun yarns with polyurethane (PU) filament as core and long silver nanowires (AgNWs) loaded cotton fiber as shell was fabricated by spinning technology. The results showed that when the loading of AgNWs was 10 wt%, the strain range of the PU/cotton@AgNWs core-spun yarn was 0-60%, the gauge factor of 12.6 was linear, and the strain sensing and mechanical properties were stable after repeated stretching. This strain sensing elastic core-spun yarns constructed by spinning technology could be used as one of the important materials for intelligent wearable devices. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Polyurethanes

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All green Solvent Engineering of Organic-Inorganic Hybrid Perovskite Layer for High-Performance Solar Cells

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SSRN 2022年

作者： Wei, Jinquan Cao, Xiaobing Hao, Lei Liu, Zijin Su, Gengyang He, Xin Zeng, Qingguang School of Applied Physics and Materials Wuyi University Jiangmen529020 China School of Textile Materials and Engineering Wuyi University Jiangmen529020 China State Key Lab of New Ceramics and Fine Processing Education Ministry Key Laboratory for Advanced Materials Processing Technology School of Materials Science and Engineering Tsinghua University Beijing100084 China

Solvent engineering technology is an important approach for fabrication of high quality perovskite films, and thereby high-performance perovskite solar cells (PSCs). However, it is strongly dependent on the usage of toxic solvents, including the host solvent and anti-solvent to prepare perovskite solutions and control the crystallization of perovskite films, respectively. The usage of toxic solvents poses a serious threat to the health of manufactures and the safety of environment. Therefore, the solvent toxicity has become a burning issue before the forthcoming commercialization of PSCs. Here, we report an all green solvent engineering to prepare high quality (FAPbI3)1-x(MAPbBr3)x (x=0, 0.05) films, where a green Lewis base solvent of triethyl phosphate (TEP) is used to prepare (FAPbI3)1-x(MAPbBr3)x/TEP solution, and a non-polar solvent of dibutyl ether (DEE) is used as anti-solvent. In this approach, a new intermediate phase film is formed after spin-coating the (FAPbI3)1-x(MAPbBr3)x/TEP solution on substrates, followed by dropping of DEE during spinning, and subsequently convert into perovskite films by annealing. Finally, it enables a PCE of 18.65% (x=0) and 20.13% (x=0.05) basing on a typical device configuration of FTO/SnO2/Perovskite/Spiro-OMeTAD/Au, which is the highest value for the all green solvent processed PSCs. More importantly, the all green solvent engineering approach can also be used to prepare another typical perovskite of MAPbI3 films for efficient solar cells. Therefore, this work not only provides an universial approach to prepare typical organic-inorganic hybrid perovskite films, but also addresses the solvent toxicity during the production of perovskite films. The green solvent engineering may pave the way for future industrial scale production of PSCs under environment friendly conditions. © 2022, The Authors. All rights reserved.

关键词： Perovskite solar cells

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