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Sea-Urchin-Structured Nico2o4 Decorated Nitrogen-Doped Graphene for Enhanced Electrochemical Detection of Ascorbic Acid

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SSRN 2022年

作者： Chen, Xingchao Yang, Zixian Tuo, Xin Huang, Huabo Huang, Juan Li, Liang Yu, Xianghua Key Laboratory for Green Chemical Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and Engineering Wuhan Institute of Technology Wuhan430205 China Key Laboratory of Green Processing and Functional New Textile Materials of Ministry of Education School of Textile Science and Engineering Wuhan Textile University No.1 Sunshine Avenue Wuhan430200 China Key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of Education Jianghan University Wuhan430056 China

A convenient and cost-effective route for the synthesis of sea-urchin-structured NiCo2O4 decorated nitrogen-doped graphene was demonstrated. The morphology, composition, and electrochemical properties of the obtained products were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and cyclic voltammetry. The electrocatalytic behaviors of sea-urchin-structured NiCo2O4 decorated nitrogen-doped graphene-modified glass carbon electrodes were investigated by cyclic voltammetry and chronoamperometry. The as-prepared electrode exhibited distinguished electrocatalytic oxidation of ascorbic acid. The linear response relationship for ascorbic acid was obtained ranging from 2.0 mM to 6 mM with a rapid response time of less than 2 s and a low detection of the limit of 0.39 mM (signal/noise = 3), which could be attributed to the high conductivity, high electroactivity for electrocatalytic oxidation of ascorbic acid, as well as high specific surface area of sea-urchin-structured NiCo2O4 decorated nitrogen-doped graphene. In addition, the modified electrode showed good anti-interference ability, long-term stability, and high reproducibility. The excellent electrocatalytic behavior of sea-urchin-structured NiCo2O4 decorated nitrogen-doped graphene may make it promising for applications in electrochemical analysis. © 2022, The Authors. All rights reserved.

关键词： Ascorbic acid

Polypyrrole-Derived Carbon Nanotubes for Potential Application in Electrochemical Detection of Dopamine

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SSRN 2022年

作者： Wang, Yangyuchuang Yao, Wenzi Huang, Huabo Huang, Juan Li, Liang Yu, Xianghua Key Laboratory for Green Chemical Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization Ministry of Education Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and Engineering Wuhan Institute of Technology Wuhan430205 China Key Laboratory of Green Processing and Functional New Textile Materials Ministry of Education School of Textile Science and Engineering Wuhan Textile University No.1 Sunshine Avenue Wuhan430200 China Key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of Education Jianghan University Wuhan430056 China

A novel electrochemical sensor for dopamine (DA) is developed based on heteroatom-doped carbon nanotubes derived from polypyrrole. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, specific surface analyzer, and cyclic voltammetry are employed to characterize the microstructure and property of the products. The electrochemical catalytic activities of heteroatom-doped carbon nanotubes modified glassy carbon electrode (GCE) towards DA are further investigated by cyclic voltammetry, amperometry, and differential pulse voltammetry. The results indicate that heteroatom-doped carbon nanotubes prepared by pyrolysis of polypyrrole nanotubes at 800 oC possessed higher specific surface area and better electrochemical activity compared with others obtained at different temperatures. Therefore, the electrochemical sensor fabricated by the heteroatom-doped carbon nanotubes shows excellent detection ability towards DA as well as remarkable anti-interference ability and stability. These features collectively endow the polypyrrole-derived carbon nanotubes with a promising application for the fabrication of electrochemical sensors. © 2022, The Authors. All rights reserved.

关键词： Carbon nanotubes

High Strength and Biodegradable Dielectric Film with Synergistic Alignment of Chitosan Nanofibrous Networks and Bnnss

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SSRN 2022年

作者： Tu, Hu Li, Xiaoyan Xie, Kang Zhang, Jipeng Lin, Xinghuan Liu, Yuncui Zhang, Ruquan Duan, Bo State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China College of Chemistry and Molecular Sciences Hubei Engineering Center of Natural Polymer-based Medical Materials Key Laboratory of Biomedical Polymers of Ministry of Education Wuhan University Wuhan430072 China College of Polymer Science and Engineering Sichuan University Chengdu610065 China

The development of biodegradable and robust dielectric capacitors with high breakdown strength and energy density are indispensable. Herein, the high strength chitosan/edge hydroxylated boron nitride nanosheets (BNNSs-OH) dielectric film was fabricated via combining the dual chemically-physically crosslinking and the drafting orientation strategy, which could induced BNNSs–OH and chitosan crosslinked network alignment within the film via covalent and hydrogen bonding interaction, leading to the comprehensive reinforcement of tensile strength from 126 to 240 MPa, the E b from 448 to 584 MV m -1 , the in-plane thermal conductivities from 0.89 to 2.46 W m -1 K -1 and energy storage density from 7.22 to 13.71 J cm -1 , superior than the comprehensive evaluation of the reported polymer dielectrics. The dielectric film could be completely degraded in soil in 90 days, which opened a new path for the development of next-generation environment-friendly dielectrics with excellent mechanical and dielectric properties. © 2022, The Authors. All rights reserved.

关键词： Chitosan

ZnS/CuS nanoparticles encapsulated in multichannel carbon fibers as high-performance anode materials for flexible Li-ion capacitors

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Energy Materials and Devices

Energy materials and Devices 2023年第2期1卷 106-118页

作者： Bohan Li Chong Wang Zhouyang Qin Chenhui Luan Changzhen Zhan Liangliang Li Ruitao Lv Wanci Shen Zheng-Hong Huang Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua Univer-sityBeijing 100084China School of Chemical and Environmental Engineering China University of Mining and Technology(Beijing)Beijing 100083China

Transition metal sulfides(TMSs)are widely recognized for their potential as anode materials in the develop-ment of flexible lithium-ion capacitors(FLICs)owing to their high theoretical ***,their practical application has been significantly limited by rapid capacity decay and sluggish kinetics associated with TMS volume *** response to these challenges,we have prepared ZnS/CuS nanoparticles embedded in continuous and multichannel carbon fibers(CFs).This was achieved through a process involving blow-spin-ning and subsequent ***,the electrochemical performance of these materials was largely improved,owing to the synergistic effect of bimetallic *** ZnS/CuS-CF anode material demon-strated a high specific capacity of over 900 mAh g^(−1)at a current density of 0.2 A g^(−1).Furthermore,it exhibited superior rate capacity(300 mAh g^(−1)at 20 A g^(−1))and excellent cyclic stability,maintaining its performance over 1000 cycles at 10 A g^(−1).We also prepared lithium-ion capacitors(LICs)using the same *** LICs exhibited a maximum energy density of 136 Wh kg^(−1),a high power density of 43.5 kW kg^(−1),and an impres-sive cyclic stability over 4000 *** addition,the FLICs,when configured in the form of a pouch cell,demonstrated significant potential for the development of smart,flexible electronic devices.

关键词： metal sulfides anode carbon fiber flexible lithium-ion capacitors

Progress and perspective of high strain NBT-based lead-free piezoceramics and multilayer actuators

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Journal of Materiomics 2021年第3期7卷 508-544页

作者： Pengyuan Fan Kai Liu Weigang Ma Hua Tan Qi Zhang Ling Zhang Changrong Zhou David Salamon Shan-Tao Zhang Yangjun Zhang Bo Nan Haibo Zhang School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan430074PR China School of Materials Science and Engineering University of New South WalesSydney2052Australia School of Mechanical and Electrical Engineering Shihezi UniversityShiheziChina College of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin541004PR China Central European Institute of Technology(CEITEC)Brno University of Technology Czech Republic National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringCollege of Engineering and Applied ScienceCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China State Key Laboratory of Automotive Safety and Energy School of Vehicle and MobilityTsinghua UniversityBeijing100084PR China Guangdong HUST Industrial Technology Research Institute Dongguan523808PR China

In this review,the evolution of high strain Na_(0.5)Bi_(0.5)TiO_(3)-based lead-free piezoceramics and their multilayer actuators has been ***,in terms of Na_(0.5)Bi_(0.5)TiO_(3)-based ceramic materials,the origin of high strain,the typical chemical modification methods of obtaining large strain and extrinsic factors affecting the large strain are *** it briefly summarizes the problems existing in Na_(0.5)Bi_(0.5)TiO_(3)-based ceramics for multilayer actuator *** to optimize strain performance by means of microstructure control and phase structure design are also ***,in terms of multilayer actuator,we describe its characteristics,applications and preparation process systematically,as well as the recent development of Na_(0.5)Bi_(0.5)TiO_(3)-based multilayer *** last,perspectives on directions of following work and promising fields for the applications of the materials and their devices are presented.

关键词： Lead-free piezoceramics Bismuth sodium titanate Electric-field-induced strain Multilayer actuators

Hierarchically Porous Carbonized Pleurotus Eryngii Based Steam Generator for Efficient Solar Evaporation

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SSRN 2022年

作者： Zhou, Zhaozixuan Fu, Zhuan Zhang, Chunhua Gong, Junyao Tang, Wenyang Wei, Bangyang Wang, Jiandong Li, Li Li, Wenbin Xia, Liangjun State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Institute of Textiles and Clothing The Hong Kong Polytechnic University 999077 Hong Kong College of Textile Science and Engineering Zhejiang Sci-Tech University Hangzhou310018 China Deakin University Institute for Frontier Materials GeelongVIC3216 Australia

Desalination and purification of seawater and wastewater has been considered as an effective strategy to alleviate water shortage. Interfacial solar steam generation utilizing biomass materials as the core of the evaporator has drawn considerable awareness of its distinctive natural structure. Herein, we report a biomass solar evaporator composed of a convenient and reinforced water transport device using carbonized Pleurotus eryngii (C-PE). Benefiting from the microporous carbon skeleton and microchannels, the as-prepared device exhibits excellent water transpiration and rapid evaporation. The hierarchically porous structure of C-PE could entice interior multiple light reflection to enable all-directional light absorption (> 91.7%) and enhance the capability of photothermal conversion. This device shows a high evaporation rate of 1.22 kg m-2 h-1 under 1 kW m-2 power density. Moreover, the high efficiencies of 81.7% under 1 kW m-2 and 95.1% under 4 kW m-2 for C-PE evaporator were attained. Furthermore, using C-PE for extraction of potable condensed water from wastewater samples containing Na+ , heavy metal ions, dyes, and oil shows a promising potential in terms of cost and sewage treatment. The multiple advantages of high evaporation efficiency and wastewater purification endow the C-PE evaporator available for future bio-derived solar-thermal materials and desalination applications. © 2022, The Authors. All rights reserved.

关键词： Evaporators

Utilization of waste wool fibers for fabrication of wool powders and keratin:a review

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Journal of Leather Science and Engineering 2020年第1期2卷 160-174页

作者： Chunhua Zhang Liangjun Xia Jiajing Zhang Xin Liu Weilin Xu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China College of Material Science and Engineering Wuhan Textile UniversityWuhan 430200China State Key Laboratory of Silkworm Genome Biology Ministry of AgricultureSouthwest UniversityChongqing 400715China Institute for Frontier Materials Deakin UniversityGeelongVictoria 3216Australia

Wool fiber contains approximately 95%keratinous proteins,which is one of the most abundant sources of structural ***,a large amount of wool waste is *** appropriate approaches to recycle wool waste and produce value-added products is vital for sustainable development and reducing environmental ***,this paper reviews the mechanical methods of fabricating wool powder,including pan milling,combined wet and air-jet milling,steam explosion,freeze milling,and three-stage *** influencing factors of shape and size,structure,and properties are highlighted to overview of the possible controlling ***,this review summarizes various chemical methods for the extraction of wool keratin,underlining the dissolution efficiency and the structure of wool ***,the application of reused wool particles in textile,biosorbent,and biomaterials are also ***,several perspectives in terms of future research on the fabrication and application of wool particles are highlighted.

关键词： Wool waste Powder Keratin Milling method textile Biomaterial

Effect of Lanthanum on Microstructure Evolution and Mechanical Behavior of Mg-Al-Mn Alloy

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SSRN 2023年

作者： Li, Xiaoqiang Xu, Qiyong Liu, Yangfan Zhang, Jiantao Liu, Dexue Le, Qichi Wang, Jinhui Zhu, Yunpeng Hu, Wenxin State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang110819 China Qinghai Provincial Key Laboratory of New Light Alloys Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming Qinghai University Xining810016 China State Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare Earths Baotou014030 China

Abstract: In this study, Mg-1.5Al-xwt%La-Mn (ALaM-x) (x = 0.5, 1, and 2) alloys were prepared by melting and casting followed by hot extrusion at 300 °C. The microstructure evolution and mechanical behavior of the alloys were studied. By observing the microstructure, it was found that the precipitated phases occurred the evolution of Al11La3 → Al2.12La0.88/Al2La → Mg12La with the decrease of Al/La, and the precipitated Al11La3 coarsened gradually with the increase of La amount. After extrusion, the fine rod-like Al11La3 was broken and refined, but the coarse Al11La3 was not completely broken, and aggregated and unevenly distributed in Mg matrix. Compared with the extruded pure Mg, the extruded ALaM-0.5 alloy presented finer microstructure with an average grain size of 1.83 μm and a refinement rate of 90%. The mechanical properties of the alloy exhibited a considerable improvement of TYS~262.5±3.0 MPa, UTS~275.0±2.4 MPa, an increase rate of 124.7% and 52.1%, respectively. Based on theoretical analysis, the high strength of the alloy was mainly attributed to refinement strengthening, dislocation strengthening, precipitation strengthening and texture strengthening, among them, refinement strengthening up to 42%. Furthermore, the inverse Hall-Petch relationship between (d-1/2) and strain hardening exponents (n) was found, and the precipitated phase could delay the weakening trend of strain hardening capacity with decreasing grain size. © 2023, The Authors. All rights reserved.

关键词： Magnesium alloys

In-Situ Polymerization of a Free-Standing and Tough Gel Polymer Electrolyte for Lithium Metal Batteries

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SSRN 2023年

作者： Wang, Yuli Wang, Zonglei Zhao, Yunyang Yang, Xueting Xu, Jie Ye, Xianke Jiang, Xiancai Chen, Yazhou Li, Chen Ye, Dezhan State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Materials Science and Engineering Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Chemical Engineering Fuzhou University Fuzhou350108 China Fuzhou University China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China

In-situ polymerization of gel polymer electrolytes (GPEs) is expected to be promising approach to solve the safety and interfacial problems of lithium ion battery, but it is still challenging ways to tradeoff the high electrochemical properties and mechanical toughness. Here, 30 um thickness of free-standing GPEs with extremely high monomer conversion were obtained by in-situ UV approach on lithium metal anode within only few seconds. The coordination of amide and aliphatic carbonyl groups with lithium ion endows the tough mechanical properties, which tensile strength and elongation at break reach up to ~1.0 MPa and ~920%. Furthermore, the inflammability of dry polymer matrix and a good degree of graphitization on the surface of burned polymer gel contribute to its flame resistance. The ionic conductivity and lithium ion transfer at room temperature are up to 1.03 mS/cm and 0.44, respectively. Finally, Li/LiFePO4 half cells assembled with the optimized GPEs exhibit high charge/discharge efficiency and stable cycle performance at 0.5C rate, delivering 77.44% of capacity retention and 97.41% of columbic efficiency after 1000 cycles. © 2023, The Authors. All rights reserved.

关键词： Ions