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Berlin Green Framework‑Based Gas Sensor for Room‑Temperature and High‑Selectivity Detection of Ammonia

Nano-Micro Letters 2021年第4期13卷 146-158页

作者： Tingqiang Yang Lingfeng Gao Wenxuan Wang Jianlong Kang Guanghui Zhao Delong Li Wen Chen Han Zhang Institute of Microscale Optoelectronics Collaborative Innovation Centre for Optoelectronic Science and TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro‑Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070People’s Republic of China Research Center for Materials Genome Engineering Wuhan University of TechnologyWuhan 430070People’s Republic of China

Ammonia detection possesses great potential in atmosphere environmental protection,agriculture,industry,and rapid medical ***,it still remains a great challenge to balance the sensitivity,selectivity,working temperature,and response/recovery *** this work,Berlin green(BG)framework is demonstrated as a highly promising sensing material for ammonia detection by both density functional theory simulation and experimental gas sensing *** in BG framework offers abundant active sites for ammonia absorption,and the absorbed ammonia transfers sufficient electron to BG,arousing remarkable enhancement of *** BG framework shows remarkable response to ammonia at 50–110°C with the highest response at 80°C,which is jointly influenced by ammonia’s absorption onto BG surface and insertion into BG *** sensing performance of BG can hardly be achieved at room temperature due to its high *** of conductive Ti3CN MXene overcomes the high resistance of pure BG framework,and the simply prepared BG/Ti3CN mixture shows high selectivity to ammonia at room temperature with satisfying response/recovery speed.

关键词： Berlin green framework Gas sensor Ammonia Room temperature High selectivity

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Microstructure and Oxidation Resistance of V Thin Films Deposited by Magnetron Sputtering at Room Temperature

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Journal of Wuhan University of technology(materials Science) 2020年第5期35卷 879-884页

作者： ZHANG Song ZHANG Ziyu LI Jun TU Rong SHEN Qiang WANG Chuanbin LUO Guoqiang ZHANG Lianmeng State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China National Key Laboratory for Shock Wave and Detonation Physics Institute of Fluid PhysicsMianyang 621900China

Vanadium films were deposited on Si(100)substrates at room temperature by direct current(DC)magnetron *** microstructure and surface morphology were studied using scanning electron microscopy(SEM)and atomic force microscope(AFM).The oxidation resistance of films in air was studied using X-ray photoelectron spectroscopy(XPS)and transmission electron microscopy(TEM).The results showed that the amorphous vanadium film with a flatter surface had higher oxidation resistance than the crystalline film when exposed to *** rapid formation of the thin oxide layer of amorphous vanadium film could protect the film from sustained oxidation,and the relative reasons were discussed.

关键词： vanadium films magnetron sputtering sputtering power(Ps) microstructure oxidation resistance

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Effect of the processing route on the microstructure and mechanical behavior of superlight Mg-9Li-1Zn alloy via friction stir processing

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Journal of Magnesium and Alloys 2022年第11期10卷 3064-3081页

作者： Mengran Zhou Zhuoran Zeng Chun Cheng Yoshiaki Morisada Qingyu Shi Jian-Yih Wang Hidetoshi Fujii Joining and Welding Research Institute(JWRI) Osaka UniversityOsakaJapan Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China State Key Laboratory of Tribology Tsinghua UniversityBeijingChina Key Laboratory for Advanced Materials Processing Technology Ministry of Education of China Tsinghua UniversityBeijing 100084China College of Engineering and Computer Science Australian National UniversityACT 2601Australia Department of Materials Science and Engineering National Dong-Hwa UniversityHwa-LianTaiwanChina

In this study, the effect of the processing route using a friction stir processing(FSP) method on the microstructure and mechanical behavior of a Mg-9Li-1Zn alloy was systematically investigated. In the FSP method, the odd-numbered(1st and 3rd) process directions and even-numbered(2nd and 4th) passes were alternated to distribute the strain throughout the whole processed zone uniformly. Consequently, the processed zone had a much more uniform microstructure and hardness distribution than the processed zone obtained using the conventional FSP method. Using this method, the grain size of a Mg-9Li-1Zn sheet alloy was refined from ~31 μm to ~0.21 μm with uniformly distributedα and β phases. The processed alloy exhibited a high strength-ductility synergy with an ultimate tensile strength(UTS) of 220.1 MPa and total elongation of 70.0% at a strain rate of 10^(-3)s^(-1), overwhelmingly higher than those of the base metal, 155.6 MPa in UTS and 36.0%in elongation. The in-situ SEM-DIC analysis and TEM observation demonstrated that such an outstanding ductility with moderate strength is caused by grain boundary sliding, the dominant deformation mechanism of the ultra-fine-grained sample after FSP. The processing route with reverse processing direction was proven to be efficient in producing the ultrafine grain size microstructure and improving the mechanical properties of superlight Mg-9Li-1Zn alloy.

关键词： Mg-Li-Zn alloy Friction stir processing Microstructure In-situ SEM-DIC Mechanical properties

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Ceramizable Cf/BPR composites with enhanced oxidation resistance up to 1670 °C

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Ceramics International 2025年

作者： Li, Junguo Zhao, Chenhan Jiang, Feng Zhang, Shiquan Yang, Suohui Xiang, Qianqian Li, Meijuan zhang, Jian Shen, Qiang School of Material Science and Engineering Wuhan University of Technology Wuhan430070 China School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Ceramizable carbon fiber/boron-modified phenolic resin (Cf/BPR) composites are cost-effective and suitable for fabricating large-scale components, making them vital for thermal protection systems in aerospace vehicles. However, their thermal resistance requires further improvement. This study investigates the modification of Cf/BPR composites using ZrSi2, Al, and mica to enhance their thermal resistance. High-temperature static oxidation and oxyacetylene ablation tests are conducted to evaluate their high-temperature performance. The role of each filler on oxidation resistance is discussed. The results reveal that when ZrSi2 is added at 33.75 phr, Al at 3.75 phr, and mica at 5 phr, the prepared composite exhibits a flexural strength of 56 MPa after 20 min of static oxidation at 1600 °C, with excellent protection of the carbon fibers. After oxidation at 1670 °C, the flexural strength remains at 45 MPa, despite some degree of carbon fiber ablation. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Carbon fibers

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Understanding the Environmentally Driven Corrosion Behavior and Mechanism of Aln/Mo Functionally Graded materials Exposed to Li/Lif-Licl-Libr Vapor

SSRN

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SSRN 2022年

作者： Jia, Mingyong Chen, Fei He, Yaling Wu, Yueqi Shen, Qiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China

The environment temperature-driven corrosion behavior and mechanism of Li/LiF-LiCl-LiBr vapor on AlN/Mo functionally graded materials were investigated. It is shown that the corrosion failure of AlN/Mo FGMs driven by Li vapor begins at 650 ℃. Li vapor not only diffuses along the grain boundaries of AlN but also enters the interior of the adjacent AlN grains, leading to the disintegration of the AlN matrix. The 3D framework of Mo is hardly affected in Li/LiF-LiCl-LiBr vapor, preventing the cracking caused by inconsistent deformation inside the AlN/Mo sealing component. This work provides a reference for the operating temperature of liquid metal batteries. © 2022, The Authors. All rights reserved.

关键词： Aluminum nitride

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Platinum clusters stabilized by zincosilicate zeolite for efficient propane dehydrogenation

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Chinese Journal of Catalysis 2025年第4期71卷 208-219页

作者： Hao Liu Ying Zhang Liyang Liu Tianxiang Chen Xingcong Zhang Peng Hu Chao Xiong Jie Zhou Hao Zhang Lihui Dong Tsz Woon Benedict Lo Bing Nan Xiaohui He Hongbing Ji Key Laboratory of Bioinorganicand Synthetic Chemistry of Ministry of Education Fine Chemical Industry Research InstituteSchool of ChemistryIGCMESun Yat-sen UniversityGuangzhou 510275GuangdongChina Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology School of Chemistry and Chemical EngineeringGuangxi UniversityNanning 530004GuangxiChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai 200120China State Key Laboratory of Chemical Biology and Drug Discovery Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityHunghomHong KongChina State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology Institute of Green Petroleum Processing and Light Hydrocarbon ConversionCollege of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014ZhejiangChina Guangdong Technology Research Center for Synthesis and Separation of Thermosensitive Chemicals Guangzhou 510006GuangdongChina

Dispersing metals from nanoparticles to clusters is often achieved using ligand protection methods,which exhibit unique properties such as suppressing structure-sensitive side ***,this method is limited by the use of different metal precursor salts corresponding to different *** alternative approach,the ion exchange(IE)method,can overcome this limitation to some ***,there is still an urgent need to address the stabilization of metals(especially precious metals)by using IE ***,we reported a Pt cluster catalyst prepared mainly by anchoring Pt atoms via O located near the framework Zn in zincosilicate zeolites and riveted by zeolite surface rings after reduction(reduced Pt/Zn-3-IE).The catalyst can achieve an initial propane conversion of 26%in a pure propane atmosphere at 550℃and shows little deactivation even after 7.5 d of ***,the alteration of catalyst by the introduction of framework Zn was also highlighted and interpreted.

关键词： Zincosilicate zeolite Acid-site identification Rivet effect Pt clusters Propane dehydrogenation

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Defect and Doping Co‑Engineered Non‑Metal Nanocarbon ORR Electrocatalyst

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Nano-Micro Letters 2021年第4期13卷 178-207页

作者： Jian Zhang Jingjing Zhang Feng He Yijun Chen Jiawei Zhu Deli Wang Shichun Mu Hui Ying Yang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200People’s Republic of China

Exploring low-cost and earth-abundant oxygen reduction reaction(ORR)electrocatalyst is essential for fuel cells and metal–air *** them,non-metal nanocarbon with multiple advantages of low cost,abundance,high conductivity,good durability,and competitive activity has attracted intense interest in recent *** enhanced ORR activities of the nanocarbons are normally thought to originate from heteroatom(e.g.,N,B,P,or S)doping or various induced ***,in practice,carbon-based materials usually contain both dopants and *** this regard,in terms of the co-engineering of heteroatom doping and defect inducing,we present an overview of recent advances in developing non-metal carbon-based electrocatalysts for the *** characteristics,ORR performance,and the related mechanism of these functionalized nanocarbons by heteroatom doping,defect inducing,and in particular their synergistic promotion effect are emphatically analyzed and ***,the current issues and perspectives in developing carbon-based electrocatalysts from both of heteroatom doping and defect engineering are *** review will be beneficial for the rational design and manufacturing of highly efficient carbon-based materials for electrocatalysis.

关键词： Defect Doping Electrocatalyst Oxygen reduction reaction Non-metal nanocarbon

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Ultra-small hollow ternary alloy nanoparticles for efficient hydrogen evolution reaction

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National Science Review 2021年第7期8卷 185-197页

作者： Zhenxing Li Chengcheng Yu Yikun Kang Xin Zhang Yangyang Wen Zhao-Kui Wang Chang Ma Cong Wang Kaiwen Wang Xianlin Qu Miao He Ya-Wen Zhang Weiyu Song State Key Laboratory of Heavy Oil Processing College of New Energy and Materials Beijing Key Laboratory of Biogas Upgrading Utilization China University of Petroleum (Beijing) College of Science China University of Petroleum (Beijing) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano and Soft Materials (FUNSOM) Soochow University Beijing Key Laboratory and Institute of Microstructure and Property of Advanced Materials Beijing University of Technology Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications PKU–HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry College of Chemistry and Molecular Engineering Peking University

Hollow nanoparticles with large specific surface area and high atom utilization are promising catalysts for the hydrogen evolution reaction（HER）. We describe herein the design and synthesis of a series of ultra-small hollow ternary alloy nanostructures using a simple one-pot strategy. The same technique was demonstrated for hollow PtNiCu nanoparticles, hollow PtCoCu nanoparticles and hollow CuNiCo nanoparticles. During synthesis, the displacement reaction and oxidative etching played important roles in the formation of hollow structures. Moreover, our hollow PtNiCu and PtCoCu nanoparticles were single crystalline, with an average diameter of 5 nm. Impressively, ultra-small hollow PtNiCu nanoparticles,containing only 10% Pt, exhibited greater electrocatalytic HER activity and stability than a commercial Pt/C catalyst. The overpotential of hollow Pt Ni Cu nanoparticles at 10 mA cm-2was 28 mV versus reversible hydrogen electrode（RHE）. The mass activity was 4.54 A mg Pt-1at-70 mV versus RHE, which is 5.62-fold greater than that of a commercial Pt/C system(0.81 A mg Pt-1). Through analyses of bonding and antibonding orbital filling, density functional theory calculations demonstrated that the bonding strength of different metals to the hydrogen intermediate（H*） was in the order of Pt > Co > Ni > Cu. The excellent HER performance of our hollow PtNiCu nanoparticles derives from moderately synergistic interactions between the three metals and H*. This work demonstrates a new strategy for the design of low-cost and high-activity HER catalysts.

关键词： ultra-small hollow nanostructure hydrogen evolution reaction density functional theory

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富羟基PtNi纳米粒子作为海水中电化学析氢反应的高效催化剂（英文）

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Science China materials 2025年

作者：赵文英杨雄肖宇轩余菲田歌沈凌卢毅耿伟吴思明应杰 Ion Tiginyanu Kenneth I. Ozoemena 阳晓宇 State Key Laboratory of Silicate Materials for Architectures & State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Chemistry Chemical Engineering and Life Sciences & Laoshan Laboratory & School of Materials Science and Engineering & International School of Materials Science and Engineering Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-sen University National Center for Materials Study and Testing Technical University of Moldova Molecular Sciences Institute School of Chemistry University of the Witwatersrand National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Cl-吸附及腐蚀效应是Pt基催化剂在海水析氢反应（HER）中性能的主要障碍.虽然引入羟基是提升HER动力学和缓解氯毒化的有效策略,但在Pt基催化剂体系中实现这一策略仍具挑战性.本研究通过高温还原法制备了具有Ni空位（路易斯酸位点）的PtN...

Cl-吸附及腐蚀效应是Pt基催化剂在海水析氢反应（HER）中性能的主要障碍.虽然引入羟基是提升HER动力学和缓解氯毒化的有效策略,但在Pt基催化剂体系中实现这一策略仍具挑战性.本研究通过高温还原法制备了具有Ni空位（路易斯酸位点）的PtNi合金纳米颗粒.路易斯酸位点促进Ni-LDH载体上晶格羟基向表面羟基的转化.Ni-LDH的晶格羟基通过与路易斯酸位点相互作用,产生表面羟基并协同提升其表面亲水性.这种双功能特性既能促进水分子吸附,又可抑制Cl-吸附.优化后的PtNi/Ni-LDH在碱性真实海水中展现出优异的HER性能,仅需1 9 mV过电位即可达到1 0 mA cm-2电流密度,塔菲尔斜率为31 mV dec-1,并在100小时耐久性测试中具有优异的稳定性.该研究为通过定向羟基工程设计高效海水裂解催化剂提供了理论基础.

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用于紫外线成像和无线报警的水凝胶基可伸缩、高稳定性和高性能的光电传感器

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Science China materials 2024年第6期67卷 1926-1937页

作者：洪杰钊姚帝杰王浩丁琼玲罗艺冰于家豪张鹤曾令兴杨柏儒王冰陶凯吴进 State Key Laboratory of Optoelectronic Materials and Technologies and Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace Northwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Northwestern Polytechnical UniversityShenzhen 518063China State Key Laboratory of Transducer Technology Shanghai 200050China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing National Engineering Research Center of Novel Equipment for Polymer ProcessingKey Laboratory of Polymer Processing Engineering(SCUT)Ministry of EducationSouth China University of TechnologyGuangzhou 510641China Engineering Research Center of Polymer Green Recycling of Ministry of Education College of Environment and ResourcesFujian Normal UniversityFuzhou 350007China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

柔性可穿戴的紫外线探测器在个体紫外线暴露监测、智能仿生眼和军事领域受到广泛关注.然而,传统不可拉伸的材料和器件结构设计限制了设备在可动态变形的人体皮肤和非平面表面上的精确监测应用和稳定附着.在本研究中,我们提出了基于氧化... 详细信息

柔性可穿戴的紫外线探测器在个体紫外线暴露监测、智能仿生眼和军事领域受到广泛关注.然而,传统不可拉伸的材料和器件结构设计限制了设备在可动态变形的人体皮肤和非平面表面上的精确监测应用和稳定附着.在本研究中,我们提出了基于氧化铜/碳-水凝胶-氧化锌/碳的新型应变隔离异质结构的本征可拉伸(拉伸应变或弯曲高达150%)紫外线探测器,该探测器具有高灵敏度(开/关比为2100%)、高稳定性(大于4000次循环),以及快速响应和恢复时间(分别为1.5和4 s).值得注意的是,该探测器通过水凝胶桥在氧化铜/碳和氧化锌/碳电极之间引入的p-n结能带结构,以及离子导电水凝胶中I^(-)/I_(3)^(-)的电化学反应机制,显著提高了其载流子效率和紫外线响应强度.本文通过集成传感器与所设计的电路板,进一步开发了一种无线紫外线报警系统,用于紫外线强度超标警报.此外,本文还设计了一种光电传感器阵列,并将其用作视网膜假体,以实现对环境紫外线强度的实时监测和成像.本文基于水凝胶基异质结构为开发可穿戴、可拉伸的光电紫外线传感器单元和成像阵列提供了一种新的可行方法.

关键词： flexible hydrogel sensors stretchable UV sensors UV imaging array optoelectronic sensors wireless alarm

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