Isolated single atom cobalt in Bi3O4Br atomic layers to trigger efficient CO2 photoreduction

Jun Di, Chao Chen, Shi-Ze Yang, Shuangming Chen, Meilin Duan, Jun Xiong, Chao Zhu, Ran Long, Wei Hao, Zhen Chi, Hailong Chen, Yu-Xiang Weng, Jiexiang Xia (), Li Song (), Shuzhou Li, Huaming Li and Zheng Liu ()
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Jun Di: Nanyang Technological University
Chao Chen: Nanyang Technological University
Shi-Ze Yang: Oak Ridge National Laboratory
Shuangming Chen: University of Science and Technology of China
Meilin Duan: University of Science and Technology of China
Jun Xiong: Jiangsu University
Chao Zhu: Nanyang Technological University
Ran Long: University of Science and Technology of China
Wei Hao: Nanyang Technological University
Zhen Chi: Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences
Hailong Chen: Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences
Yu-Xiang Weng: Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences
Jiexiang Xia: Jiangsu University
Li Song: University of Science and Technology of China
Shuzhou Li: Nanyang Technological University
Huaming Li: Jiangsu University
Zheng Liu: Nanyang Technological University

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract The design of efficient and stable photocatalysts for robust CO2 reduction without sacrifice reagent or extra photosensitizer is still challenging. Herein, a single-atom catalyst of isolated single atom cobalt incorporated into Bi3O4Br atomic layers is successfully prepared. The cobalt single atoms in the Bi3O4Br favors the charge transition, carrier separation, CO2 adsorption and activation. It can lower the CO2 activation energy barrier through stabilizing the COOH* intermediates and tune the rate-limiting step from the formation of adsorbed intermediate COOH* to be CO* desorption. Taking advantage of cobalt single atoms and two-dimensional ultrathin Bi3O4Br atomic layers, the optimized catalyst can perform light-driven CO2 reduction with a selective CO formation rate of 107.1 µmol g−1 h−1, roughly 4 and 32 times higher than that of atomic layer Bi3O4Br and bulk Bi3O4Br, respectively.

Date: 2019
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DOI: 10.1038/s41467-019-10392-w

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