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Single-Atom Catalysts for Electrochemical Hydrogen Evolution Reaction: Recent Advances and Future Perspectives

Nano-Micro Letters 2020年第2期12卷 73-101页

作者： Zonghua Pu Ibrahim Saana Amiinu Ruilin Cheng Pengyan Wang Chengtian Zhang Shichun Mu Weiyue Zhao Fengmei Su Gaixia Zhang Shijun Liao Shuhui Sun Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications VarennesQC J3X 1S2Canada State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China The Key Laboratory of Fuel Cell Technology of Guangdong Province The Key Laboratory of New Energy Technology of Guangdong UniversitiesSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641People’s Republic of China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002People’s Republic of China

Hydrogen,a renewable and outstanding energy carrier with zero carbon dioxide emission,is regarded as the best alternative to fossil *** most preferred route to large-scale production of hydrogen is by water electrolysis from the intermittent sources(e.g.,wind,solar,hydro,and tidal energy).However,the efficiency of water electrolysis is very much dependent on the activity of ***,designing high-effective,stable,and cheap materials for hydrogen evolution reaction(HER)could have a substantial impact on renewable energy ***,single-atom catalysts(SACs)have emerged as a new frontier in catalysis science,because SACs have maximum atom-utilization efficiency and excellent catalytic reaction *** synthesis methods and analytical techniques have been adopted to prepare and characterize these *** this review,we discuss recent progress on SACs synthesis,characterization methods,and their catalytic ***,we highlight their unique electrochemical characteristics toward ***,the current key challenges in SACs for HER are pointed out and some potential directions are proposed as well.

关键词： Single-atom catalysts Nanomaterials Electrocatalyst Hydrogen evolution reaction Electrochemical energy conversion

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Investigation on the leading phase of Al2O3/YAG eutectic crystals prepared by directional solidification

International Journal of Ceramic Engineering and Science

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International Journal of Ceramic Engineering and Science 2020年第4期2卷 147-151页

作者： Zhong, Yujie Wang, Shengjie Liu, Yangru Gao, Qian Wang, Kuikui Wang, Xu School of Materials Science and Engineering Xi'an Shiyou University Xi'an China Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials South China University of Technology Guangzhou China Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Institute of Materials for Energy and Environment Qingdao University Qingdao China School of Materials Science and Engineering Xi'an University of Technology Xi'an China

The leading phase of eutectic materials has an effect on the solidification behavior and further influences on their properties. Many studies have been carried out on the leading phase of metal/metal and nonmetal/metal eutectic alloys. Nevertheless, few studies were focused on no-metal/no-metal eutectic materials. In the present work, the leading phase in the Al2O3/Y3Al5O12 eutectic crystal during solidification was investigated by electron back-scattered diffraction and discussed according to the classical solidification theory. It is observed that the Y3Al5O12 was the leading phase. The leading phase was determined by the wetting angle and the undercooling. At a given wetting angle, the Y3Al5O12 would be the leading phase when the undercooling exceeds the critical value. © 2020 The Authors. International Journal of Ceramic Engineering & Science published by Wiley Periodicals LLC. on behalf of American Ceramic Society.

关键词： Aluminum oxide

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From Cd(SCN)2(CH4N2S)2to Cd(SCN)2(C4H6N2)2: Controlling Sulfur Content in Thiocyanate Systems Significantly Improves the Overall Performance of UV Nonlinear Optical materials

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Angewandte Chemie 2024年第20期136卷

作者： Yuwei Kang Can Yang Jie Gou Yaolong Zhu Qingwen Zhu Weilin Xu Qi Wu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan 430200 China Hubei Key Laboratory of Pollutant Analysis & Reuse Technology College of Chemistry and Chemical Engineering Hubei Normal University Huangshi 435002 China

Combining a strong second-order nonlinear optical (NLO) effect (>1×KH 2 PO 4 (KDP)), a large band gap (>4.2 eV), and a moderate birefringence in ultraviolet (UV) NLO crystals remains a formidable challenge. Herein, Cd(SCN) 2 (C 4 H 6 N 2 ) 2 , the first example of a thiocyanate capable of realizing a phase-matched UV NLO crystal material, is obtained by reducing the sulfur (S) content in the centrosymmetric (CS) structure of Cd(SCN) 2 (CH 4 N 2 S) 2 . Compared to the “shoulder-to-shoulder” one-dimensional (1D) chain of Cd(SCN) 2 (CH 4 N 2 S) 2 , Cd(SCN) 2 (C 4 H 6 N 2 ) 2 has a different sawtooth 1D chain structure. Cd(SCN) 2 (CH 4 N 2 S) 2 has second harmonic generation (SHG) inertia with a band gap of 3.90 eV and a UV cutoff edge of 342 nm, however, it possesses a large birefringence (0.35@546 nm). In contrast, the symmetry center breaking of Cd(SCN) 2 (C 4 H 6 N 2 ) 2 leads to remarkably strong SHG intensity (10 times that of KDP). Furthermore, it has a wide band gap (4.74 eV), short UV cutoff edge (234 nm), and moderate birefringence capable of phase matching (0.17@546 nm). This research indicates that thiocyanates are a promising class of UV NLO crystal materials, and that modulation of the sulfur content of CS thiocyanates is an effective strategy for the development of UV NLO crystals with excellent overall performances.

关键词： NLO SHG effect band gap birefringence thiocyanate

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Superwettable Microchip for Visual Detection of Date-Rape Drug in Beverages

SSRN

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SSRN 2024年

作者： Li, Zhenping Xu, Hao Du, Yukun Huang, Zhongyu Li, Jing Liu, Lian Dong, Ying Yang, Xiao-Yu Department of Forensic Medicine Tongji Medical College Huazhong University of Science and Technology 13 Hangkong Road Wuhan430030 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Shenzhen Research Institute Laoshan Laboratory Wuhan University of Technology 122 Luoshi Road Wuhan430070 China Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials School of Chemistry and Chemical Engineering Wuhan University of Science and Technology 947 Peace Avenue Wuhan430081 China Optosky Optical LTD 1130 Jimei North Avenue Xiamen361022 China Hubei Key Laboratory of the Forensic Science Hubei University of Police 99 Nanniwan Avenue Wuhan430034 China

Gamma-hydroxybutyric acid (GHB), which is used in drug-facilitated sexual assault, is typically delivered in the form of gamma-butyrolactone (GBL) in beverage carriers. In response to the growing need of methods for rapid and on-site sensing of the drugs, we carried out an investigation aimed at developing a superwettable microchip for visual detection of the date-rape drug GBL in adulterated beverages. The superwettable microchip is comprised of Fe3O4 nanoparticles which aggregate to form a reactive spot on a superhydrophobic fabric. The spot captures and confines microdroplets containing GBL on the superhydrophobic substrate. Fe(III), generated by HCl promoted reaction of the Fe3O4 spot, then participates in a colorimetric reaction with GBL to form a naked eye observable colored complex. Quantitative determination of GBL in beverages is achieved by analyzing the red-color content of a smartphone camera derived image. The detection range of this assay protocol is ca. 0.05-10 mg mL−1, which meets the requirements to detect potentially dangerous concentration of GBL in drinks. The detection stability of the superwettable microchip for GBL in water and common beverages is maintained over at least 30 cycles. © 2024, The Authors. All rights reserved.

关键词： Nanoparticles

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Ultrabroadband and Multifunctional Achromatic Mikaelian Lens on an Elastic Plate

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Physical Review Applied 2022年第6期18卷 064047-064047页

作者： Jin Chen Guangyuan Su Shaohang Xu Mingji Chen Yongquan Liu Daining Fang Ji Zhou School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China Institute of Advanced Structure Technology Beijing Institute of Technology Beijing 100081 China State Key Laboratory for Strength and Vibration of Mechanical Structures Department of Engineering Mechanics School of Aerospace Engineering Xi’an Jiaotong University Xi’an 710049 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China

The emergence and development of acoustic artificial materials stimulate a large number of applications for the manipulation of ultrasonic and elastic waves. Most of the reported metasurfaces and metamaterials only work effectively at a given frequency and target a fixed functionality. Reconfigurable designs may solve this problem, to a certain extent, but require the introduction of complex active control components. Here, by integrating multiple functionalities on a conformally mapped Mikaelian lens with a hyperbolic secant refractive-index distribution, a broadband passive lens is presented and accomplished on an elastic plate. Just by adjusting the location and type of source, different regulations of flexural waves can be switched from one sort to another. Through projecting the refractive-index profile onto the thickness of the plates, the proposed Mikaelian lens is designed and fabricated. Theoretical prediction and experimental results demonstrate beam scanning at an angle of up to 120° from 30 to 180 kHz and achromatic subwavelength focusing with a full width at half maximum of around 0.3λ from 30 to 120 kHz. Without using locally resonant materials or active control elements, this work provides a feasible way to construct multifunctional flexural-wave devices.

关键词： Acoustic metamaterials Continuum mechanics Mechanical deformation

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Research Progress on Anti-clogging technology of Submerged Entry Nozzles for Continuous Casting

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China's Refractories 2022年第4期31卷 1-6页

作者： LIU Guoqi GU Qiang LI Hongxia YUAN Lei YANG Wengang QIAN Fan MA Weikui YU Jianbin YU Jingkun State Key Laboratory of Advanced Refractories Sinosteel Luoyang Institute of Refractories Research Co.Ltd.Luoyang 471039China Northeastern University Shenyang 110819China Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology Luoyang 471023China

The causes, the formation process, and the prevention of submerged entry nozzle(SEN) clogging were introduced. The influence of electric field on the SEN clogging was focused on, including the basic theory and measurement of SEN charging,the preliminary research on SEN charging, the influence of molten steel on the wetting behavior of refractory materials in electric field, and the influence of electric field on the oxide inclusions in molten steel. Based on the influence of the hydrodynamics, chemistry and other factors on refractory materials, structure, inclusion particle transfer and adhesion, many anti-clogging researches have been carried out, such as optimizing process conditions, compositing anti-clogging inner lining materials, innovating SEN structure and applying physical fields, which solve the problem of SEN clogging to a certain ***, the problems of weak adaptability and superficial study on clogging mechanism are still prominent. The electric field control is a new technology to prevent clogging. Although it has achieved certain results in on-site continuous casting trials,some problems such as the method of applying electric field, the electric field parameters and the equipment still need to be gradually improved, and the surface characteristics of inclusions and SEN materials at high temperatures need to be further studied. It was pointed out that the combination of materials and applied electric field will become an important direction for SEN anti-clogging technology.

关键词： continuous casting submerged entry nozzle inclusions clogging blocking electric field

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High Temperature Heat Transfer Process and Simulation Analysis of Quartz Fiber-Aerogel Composite Multilayer 3d Fabric

SSRN

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SSRN 2022年

作者： Jin, Xinpeng Wu, Xi Li, Jiugang He, Jiahao Zhang, He Li, Wenbin State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Hubei Wuhan430200 China Institute for Frontier Materials Deakin University Geelong Australia General Space Engineering Department of China Aerospace Science and Industry Corporation Beijing100854 China School of Textile Science and Engineering Wuhan Textile University Hubei Wuhan430200 China School of Textile and Material Engineering Dalian Polytechnic University Liaoning116034 China

Thermal insulation and high temperature resistant fabrics have important applications in aerospace, military and other fields. Quartz fiber has excellent mechanical properties and can resist high temperature. Aerogel materials have outstanding thermal insulation advantages, but there are deficiencies in mechanical properties. In order to effectively utilize the high temperature resistance of quartz fiber and thermal insulation advantages of aerogel materials. Firstly, a three-dimensional fabric structure of quartz fiber-aerogel multilayer composite was designed. Aerogel yarn and quartz yarn are woven into three-dimensional composite fabric by textile technology. The thermal insulation property of the composite fabric is improved effectively, and it has good anti-erosion performance at high temperature. Secondly, in order to explore the influence of internal structure of three-dimensional composite fabric on heat transfer performance, a full-scale three-dimensional simulation model was established, which can be used to predict the thermal insulation effect of composite fabric at 700 °C. Finally, the temperatures of different structural parts of the composite fabric were tested on a high temperature heating stage, and the thermal insulation effects of 300 °C, 400 °C, 500 °C, 600 °C and 700 °C predicted by the model were verified. The experimental results show that the fabric can effectively reduce the temperature of about 60%, and the difference between the measured data and the simulated data is less than 8%, which effectively verifies the accuracy of the model. © 2022, The Authors. All rights reserved.

关键词： Aerogels

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Modulating electronic structure of cobalt silicate by iron-doping ensuring the boosted oxygen evolution reaction properties

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Journal of Colloid and Interface Science 2025年 699卷

作者： Xianfang Tan Chongtao Ding Yang Wang Dongzhi Chen Tian Liang Changgong Meng Yifu Zhang Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology Xianning 437100 PR China School of Chemistry Dalian University of Technology Dalian 116024 PR China State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan 430073 PR China

The development of cost-effective, high-efficiency oxygen evolution reaction (OER) catalysts through precise compositional and structural design via guest doping engineering represents a significant research challenge. While cobalt silicate (CoSi) has emerged as a promising OER catalyst, its practical application has been limited by relatively high overpotential (η). In this study, we presented a strategic Fe-doping approach to engineer the electronic structure of CoSi, significantly enhancing its OER performance. Through hydrothermal synthesis, we successfully incorporated Fe atoms into the CoSi framework, creating hollow spherical iron-doped cobalt silicate (CoSi-Fe) catalysts. Comprehensive characterization revealed that the geometric and synergistic effects of Fe-doping facilitate: (1) increased exposure of active sites, (2) enhanced activity of Co/Fe dual sites, and (3) improved structural stability of Co species. Density functional theory (DFT) calculations further demonstrated that Fe incorporation optimizes reaction kinetics and improves electrical conductivity, collectively boosting OER activity. The optimized CoSi-Fe-3 catalyst (Co/Fe = 15:5) exhibits exceptional performance, achieving an overpotential of only 289 mV at 10 mA cm −2 (a 118 mV reduction compared to pristine CoSi of 407 mV) and superior to most reported metal silicate catalysts. We systematically analyzed the structure–activity relationship underlying this performance enhancement. This work establishes an effective doping strategy for developing high-performance silicate-based electrocatalysts, providing valuable insights for advancing renewable energy conversion technologies.

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Cu catalysts detour hydrogen evolution reaction

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Matter 2022年第8期5卷 2537-2540页

作者： Ying Dong Jing Li Xiao-Yu Yang Department of Forensic Medicine Huazhong University of Science and Technology 13 Hangkong Road Wuhan 430030 China Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Wuhan 430081 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao) Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA

The use of electrocatalytic reactions in aqueous solution to produce high-value chemicals is severely restricted by the occurrence of the electrochemical reaction of water. In a recent study published in Nature Nanotechnology by Haotian Wang and colleagues, hydrophilic-hydrophobic Cu catalysts, which suppress the undesirable hydrogen evolution reaction, have been discovered to promote conversion of 99% nitrate at an industrial wastewater level into ammonia using an industrial-relevant reduction current of 1 A/cm 2 .

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Review on the 3-D simulation for weft knitted fabric

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Journal of Engineered Fibers and Fabrics 2021年第16期16卷

作者： Sha, Sha Geng, Anqi Gao, Yuqin Li, Bin Jiang, Xuewei Tao, Hui Luo, Lei Yuan, Xiaohong Ke, Huizhen Hu, Xinrong Deng, Zhongmin Chen, Zhi State Key Laboratory of New Textile Materials and Advanced Processing Technologies Key Laboratory of Textile Fiber Product Ministry of Education Wuhan Textile University WuhanHubei China Wuhan Textile and Apparel Digital Engineering Technology Research Center School of Fashion Wuhan Textile University WuhanHubei China Engineering Research Center of Hubei Province for Clothing Information Wuhan Textile University WuhanHubei China Fujian Key Laboratory of Novel Functional Textile Fibers and Materials Engineering Research Center of Textile and Clothing Fujian Province University Minjiang University Fuzhou China

There are different kinds of geometrical models and physical models used to simulate weft knitted fabrics nowadays, such as loop models based on Pierce, piecewise function, spline curve, mass-spring model, and finite element analyses (FEA). Weft knitting simulation technology, including modeling and yarn reality, has been widely adopted in fabric structure designing for the manufacturer. The technology has great potentials in both industries and dynamic virtual display. The present article is aimed to review the current development of 3-D simulation technique for weft knitted fabrics. © The Author(s) 2021.

关键词： Knit fabrics

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