Volume 59, Issue 6 pp. 2171-2180
Minireview

Reshaping of Metal Nanoparticles Under Reaction Conditions

Dr. Beien Zhu

Dr. Beien Zhu

Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210 Shanghai, China

Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China

These authors contributed equally to this work.

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Jun Meng

Jun Meng

Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China

University of Chinese Academy of Sciences, Beijing, 100049 China

These authors contributed equally to this work.

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Dr. Wentao Yuan

Dr. Wentao Yuan

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

These authors contributed equally to this work.

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Dr. Xun Zhang

Dr. Xun Zhang

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Prof. Hangsheng Yang

Prof. Hangsheng Yang

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Prof. Yong Wang

Corresponding Author

Prof. Yong Wang

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Prof. Yi Gao

Corresponding Author

Prof. Yi Gao

Shanghai Advanced Research Institute, Chinese Academy of Sciences, 201210 Shanghai, China

Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China

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First published: 12 July 2019
Citations: 68

Graphical Abstract

Getting into shape: This Minireview gives a summary of the latest progress in characterizing and modeling the equilibrium shape of metal nanoparticles (NPs) in reactive environments through the combination of state-of-the-art in situ environmental transmission electron microscopy (ETEM) experiments and the multiscale structure reconstruction (MSR) model.

Abstract

The shape of metal nanoparticles (NPs) is one of the key factors determining their catalytic reactivity. Recent in situ TEM observations show that dynamic reshaping of metal NPs occurs under the reaction conditions, which becomes a major hurdle for fully understanding catalytic mechanisms at the molecular level. This Minireview provides a summary of the latest progress in characterizing and modeling the equilibrium shape of metal NPs in various reactive environments through the joint effort of state-of-the-art in situ environmental transmission electron microscopy experiments and a newly developed multiscale structure reconstruction model. The quantitative agreement between the experimental observations and theoretical modeling demonstrate that the fundamental mechanism of the reshaping phenomenon is driven by anisotropically changed surface energies under gas adsorption. The predictable reshaping of metal NPs paves the way for the rational design of truly efficient nanocatalysts in real reactions.

Conflict of interest

The authors declare no conflict of interest.

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