Modulating the strong metal-support interaction of single-atom catalysts via vicinal structure decoration

Jingyi Yang, Yike Huang, Haifeng Qi, Chaobin Zeng, Qike Jiang, Yitao Cui, Yang Su, Xiaorui Du, Xiaoli Pan, Xiaoyan Liu, Weizhen Li (), Botao Qiao (), Aiqin Wang and Tao Zhang
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Jingyi Yang: Chinese Academy of Sciences
Yike Huang: Chinese Academy of Sciences
Haifeng Qi: Chinese Academy of Sciences
Chaobin Zeng: Hitachi High Technologies (Shanghai) Co., Ltd
Qike Jiang: Chinese Academy of Sciences
Yitao Cui: The University of Tokyo, 1-490-2 Kouto, Shingu-cho Tatsuno
Yang Su: Chinese Academy of Sciences
Xiaorui Du: Chinese Academy of Sciences
Xiaoli Pan: Chinese Academy of Sciences
Xiaoyan Liu: Chinese Academy of Sciences
Weizhen Li: Chinese Academy of Sciences
Botao Qiao: Chinese Academy of Sciences
Aiqin Wang: Chinese Academy of Sciences
Tao Zhang: Chinese Academy of Sciences

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Metal-support interaction predominately determines the electronic structure of metal atoms in single-atom catalysts (SACs), largely affecting their catalytic performance. However, directly tuning the metal-support interaction in oxide supported SACs remains challenging. Here, we report a new strategy to subtly regulate the strong covalent metal-support interaction (CMSI) of Pt/CoFe2O4 SACs by a simple water soaking treatment. Detailed studies reveal that the CMSI is weakened by the bonding of H+, generated from water dissociation, onto the interface of Pt-O-Fe, resulting in reduced charge transfer from metal to support and leading to an increase of C-H bond activation in CH4 combustion by more than 50 folds. This strategy is general and can be extended to other CMSI-existed metal-supported catalysts, providing a powerful tool to modulating the catalytic performance of SACs.

Date: 2022
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DOI: 10.1038/s41467-022-31966-1

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