Valence states of single Au atoms dictate the catalytic activity of Au1/CeO2(100)

Rui Liu; Weiye Qu; Xiaolei Hu; Junxiao Chen; Yangyang Dong; Dongrun Xu; Jing Liu; Zhen Ma; Xingfu Tang

doi:10.1039/D2CC04219C

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Valence states of single Au atoms dictate the catalytic activity of Au₁/CeO₂(100)†

Rui Liu,^a Weiye Qu,^a Xiaolei Hu,^a Junxiao Chen,^a Yangyang Dong,^a Dongrun Xu,^a Jing Liu,^a Zhen Ma

*^ac and Xingfu Tang

*^abc

Author affiliations

* Corresponding authors

^a Department of Environmental Science & Engineering, Fudan University, 2005 Songhu Road, Shanghai 200438, China
E-mail: tangxf@fudan.edu.cn, zhenma@fudan.edu.cn

^b Jiangsu Collaborative Innovation Center of Atmospheric Environment & Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China

^c Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China

Abstract

We tune the valence state of single Au atoms anchored on CeO₂(100) by treating the catalyst in H₂ at different temperatures and obtain a series of Au₁/CeO₂(100). The transition from Au₁^+0.9 to Au₁^+0.3 leads to an enhancement of the CO oxidation activity of Au₁/CeO₂(100) by one order of magnitude. This work is of significance for an in-depth understanding of reaction mechanisms and rational design of high-performance catalysts.

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Article information

DOI: https://doi.org/10.1039/D2CC04219C
Article type: Communication
Submitted: 28 Jul 2022
Accepted: 17 Sep 2022
First published: 28 Sep 2022

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Chem. Commun., 2022,58, 11587-11590

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Valence states of single Au atoms dictate the catalytic activity of Au₁/CeO₂(100)

R. Liu, W. Qu, X. Hu, J. Chen, Y. Dong, D. Xu, J. Liu, Z. Ma and X. Tang, Chem. Commun., 2022, 58, 11587 DOI: 10.1039/D2CC04219C

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Chemical Communications