In-situ observation of structural evolution of single-atom catalysts:From synthesis to catalysis

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外文摘要：Atomically dispersed single-atom catalysts(SACs)have been extensively studied over the past decade because of their high atom utilization efficiencies and specific selectivities.Although numerous strategies have been proposed to obtain SACs with high densities and stabilities,the transformation mechanism that occurs dur-ing the reaction is still unclear.This review summarizes the structural evolution of SACs in the preparation process and reaction with various electron microscopy techniques at atomic scale under environmental con-ditions.Current state-of-the-art environmental electron microscopy studies on SACs mainly focus on porous carbons,metals or metal oxides,and some specific composite materials.The dynamic evolution of SACs un-der various reaction conditions is also investigated in this study.Finally,we highlight the challenges and drawbacks of the current studies and the prospects for the future exploration of SACs with environmental strategies.

外文关键词：

Single-atom catalystsStructural transformationAtomizationEnvironmental electron microscope

作者：

Lei Wang、Shuyuan Lyu、Shuohao Li

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作者单位：

School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225009,China

School of Art and Design,Huaiyin Institute of Technology,Huaian 223003,China

School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China

基金：

National Natural Science Foundation of ChinaJiangsu Key Laboratory of Coalbased Greenhouse Gas Control and UtilizationChina Postdoctoral Science FoundationYangzhou University Startup Foundation

项目编号：

52204255PCSX2022012020M682764

出版年：

2024

DOI：

10.1016/j.chphma.2023.03.003

化学物理材料(英文)

ISSN：

年,卷(期)：2024.3(1)

参考文献量126