In situ manipulation of the active Au-TiO 2 interface with atomic precision during CO oxidation-Reference-Cited by-同舟云学术

In situ manipulation of the active Au-TiO 2 interface with atomic precision during CO oxidation

Published:2021-01-29 Issue:6528 Volume:371 Page:517-521
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Yuan Wentao¹^ORCID,Zhu Beien²³^ORCID,Fang Ke¹^ORCID,Li Xiao-Yan³⁴,Hansen Thomas W.⁵^ORCID,Ou Yang¹^ORCID,Yang Hangsheng¹^ORCID,Wagner Jakob B.⁵^ORCID,Gao Yi²³^ORCID,Wang Yong¹^ORCID,Zhang Ze¹^ORCID

Affiliation:

1. State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China.

2. Interdisciplinary Research Center, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210 China.

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

4. University of Chinese Academy of Sciences, Beijing, 100049 China.

5. DTU Nanolab, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.

Abstract

Rotation during reaction Determining changes in heterogeneous catalysts under reaction conditions can provide insight into mechanisms. Under reaction conditions, not only can metal nanoparticles change shape but their interaction with the oxide support could also be affected. Yuan et al. used aberration-corrected environmental transmission electron microscopy to study gold nanoparticles on titanium surfaces at low electron beam doses. During carbon monoxide (CO) oxidation at total pressures of a few millibars and 500°C, they observed that gold nanoparticles rotated by about 10° but returned to their original position when CO was removed. Density function theory calculations indicated that rotation was induced by changes in the coverage of adsorbed molecular oxygen at the interface. Science , this issue p. 517

Funder

National Natural Science Foundation of China

Youth Innovation Promotion Association CAS

Zhejiang Provincial Natural Science Foundation

Fundamental Research Funds for the Zhejiang Provincial Universities

China Postdoctoral Science Foundation

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference48 articles.

1. Chemoselective Hydrogenation of Nitro Compounds with Supported Gold Catalysts