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Wet-chemical synthesis of two-dimensional metal nanomaterials for electrocatalysis

National Science Review 2022年第5期9卷 37-56页

作者： Zijian Li Li Zhai Yiyao Ge Zhiqi Huang Zhenyu Shi Jiawei Liu Wei Zhai Jinzhe Liang Hua Zhang Department of Chemistry City University of Hong Kong Hong Kong Branch of National Precious metals Material Engineering Research Center(NPMM) City University of Hong Kong School of Materials Science and Engineering Nanyang Technological University Shenzhen Research Institute City University of Hong Kong

Two-dimensional(2D) metal nanomaterials have gained ever-growing research interest owing to their fascinating physico chemical properties and promising application,especially in the held of ele ctrocatalysis.In this review,we briefly introduce the recent advances in wet-chemical synthesis of 2D metal nanomaterials.Subsequently,the catalytic performances of 2D metal nanomaterials in a variety of electrochemical reactions are illustrated.Finally,we summarize current challenges and highlight our perspectives on preparing high-performance 2D metal electro catalysts.

关键词： two-dimensional metal nanomaterials wet-chemical synthesis phase heterophase electrocatalysis

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Recent advances on bioreceptors and metal nanomaterials——based electrochemical impedance spectroscopy biosensors

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Rare metals 2023年第4期42卷 1098-1117页

作者： Zi-Bo Chen Hui-Hui Jin Zhu-Gen Yang Da-Ping He School of Materials and Science Engineering Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center of RF-Microwave Technology and Application School of ScienceWuhan University of TechnologyWuhan 430070China School of Water Energy and EnvironmentCranfield UniversityCranfield MK430ALUK

metal-based nanomaterials have a wide range of applications in energy conversion,catalysis,bioimaging,and sensors.In our review,we mainly introduce metal nanomaterials-based electrochemical impedance spectroscopy(EIS)biosensors in medical healthcare,environmental monitoring,and food safety instructively,with collecting and analyzing the current achievement of predecessors.In general,metal nanomaterials-based EIS biosensors can be divided into four components,in which bioreceptors and metal nanomaterials transducers are vital for designs.Bioreceptors and metal nanomaterials determine the feasibility,specificity,sensitivity and simplicity of manufacturing and operations.With the demonstration and discussion of bioreceptors and metal nanomaterials of biosensors in different fields,our review aims to assist brief acknowledgement of current state-of-the-art achievement and provide our insights for the future development.

关键词： metal nanomaterials Electrochemical impedance spectroscopy(EIS) Biosensors Bioreceptors

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Interface Analysis in Studying Biomedical Effects of metal nanomaterials

Interface Analysis in Studying Biomedical Effects of Metal N...

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中国毒理学会第九次全国毒理学大会

作者： WANG Li-ming CHEN Chun-ying Institute of High Energy Physics Chinese Academy of Sciences National Center for Nanoscience and Technology

The structures and behaviors of nanomaterials atnano-bio interfaces are the basis of biomedical effects of nanomaterials. It is crucial to reveal the interfacial behaviors of metal nanoparticles when they interact with cells, however, highly sensitive and in situ analytical techniques are crucial and required. To understandthe mechanism of biomedical effects from interfacial aspects, we systematically developed analytical methods replying on synchrotron radiation and quantify both interfacial structures and nanomaterials. These techniques can capture both their location and chemical changessuch as adsorption of biomolecules, chemical transformation, catalysis, and redox by synchrotron radiation techniques. For example, spectroscopic techniques are used to characterize the binding structure of hard protein corona on nanomaterials, which shows how corona mediates cytotoxicity. X-ray liquid scattering can as well reveal the binding structures of nano-lipid interfaces to study the interaction between nanomaterials and biological membrane. Moreover, X-rayhigh resolution imaging is employed to capturethe accumulation and location of intracellular metal nanomaterials companying with their chemical form. Finally,we develop methods to characterize metal nanomaterial-involved catalysis and degradation in biological systems and show the determinant for the cytotoxicity from the free radicals or the products after chemical transformation. In conclusion, these methods provide accurate information for chemical forms, structures, and element imaging with promises in nanotoxicology and nanomedicine.

关键词： Biomedical effects of nanomaterials synchrotron radiation metal nanomaterials nanosafety interfacial analysis

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