Strong metal-support interaction promoted scalable production of thermally stable single-atom catalysts

Kaipeng Liu, Xintian Zhao, Guoqing Ren, Tao Yang, Yujing Ren, Adam Fraser Lee, Yang Su, Xiaoli Pan, Jingcai Zhang, Zhiqiang Chen, Jingyi Yang, Xiaoyan Liu, Tong Zhou, Wei Xi, Jun Luo, Chaobin Zeng, Hiroaki Matsumoto, Wei Liu, Qike Jiang, Karen Wilson, Aiqin Wang, Botao Qiao (), Weizhen Li () and Tao Zhang ()
Additional contact information
Kaipeng Liu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Xintian Zhao: Xi’an Jiaotong University
Guoqing Ren: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Tao Yang: Xi’an Jiaotong University
Yujing Ren: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Adam Fraser Lee: RMIT University
Yang Su: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Xiaoli Pan: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Jingcai Zhang: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Zhiqiang Chen: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Jingyi Yang: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Xiaoyan Liu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Tong Zhou: Tianjin University of Technology
Wei Xi: Tianjin University of Technology
Jun Luo: Tianjin University of Technology
Chaobin Zeng: Hitachi High-Technologies (Shanghai) Co., Ltd
Hiroaki Matsumoto: Hitachi High-Technologies (Shanghai) Co., Ltd
Wei Liu: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Qike Jiang: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Karen Wilson: RMIT University
Aiqin Wang: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Botao Qiao: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Weizhen Li: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Tao Zhang: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Single-atom catalysts (SACs) have demonstrated superior catalytic performance in numerous heterogeneous reactions. However, producing thermally stable SACs, especially in a simple and scalable way, remains a formidable challenge. Here, we report the synthesis of Ru SACs from commercial RuO2 powders by physical mixing of sub-micron RuO2 aggregates with a MgAl1.2Fe0.8O4 spinel. Atomically dispersed Ru is confirmed by aberration-corrected scanning transmission electron microscopy and X-ray absorption spectroscopy. Detailed studies reveal that the dispersion process does not arise from a gas atom trapping mechanism, but rather from anti-Ostwald ripening promoted by a strong covalent metal-support interaction. This synthetic strategy is simple and amenable to the large-scale manufacture of thermally stable SACs for industrial applications.

Date: 2020
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DOI: 10.1038/s41467-020-14984-9

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