Well-defined diatomic catalysis for photosynthesis of C2H4 from CO2

Zhongkai Xie, Shengjie Xu, Longhua Li, Shanhe Gong, Xiaojie Wu, Dongbo Xu, Baodong Mao, Ting Zhou, Min Chen, Xiao Wang, Weidong Shi () and Shuyan Song ()
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Zhongkai Xie: Jiangsu University
Shengjie Xu: Jiangsu University
Longhua Li: Jiangsu University
Shanhe Gong: Jiangsu University
Xiaojie Wu: Jiangsu University
Dongbo Xu: Jiangsu University
Baodong Mao: Jiangsu University
Ting Zhou: Jiangsu University
Min Chen: Jiangsu University
Xiao Wang: Chinese Academy of Sciences
Weidong Shi: Jiangsu University
Shuyan Song: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Owing to the specific electronic-redistribution and spatial proximity, diatomic catalysts (DACs) have been identified as principal interest for efficient photoconversion of CO2 into C2H4. However, the predominant bottom-up strategy for DACs synthesis has critically constrained the development of highly ordered DACs due to the random distribution of heteronuclear atoms, which hinders the optimization of catalytic performance and the exploration of actual reaction mechanism. Here, an up-bottom ion-cutting architecture is proposed to fabricate the well-defined DACs, and the superior spatial proximity of CuAu diatomics (DAs) decorated TiO2 (CuAu-DAs-TiO2) is successfully constructed due to the compact heteroatomic spacing (2-3 Å). Owing to the profoundly low C-C coupling energy barrier of CuAu-DAs-TiO2, a considerable C2H4 production with superior sustainability is achieved. Our discovery inspires a novel up-bottom strategy for the fabrication of well-defined DACs to motivate optimization of catalytic performance and distinct deduction of heteroatom synergistically catalytic mechanism.

Date: 2024
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DOI: 10.1038/s41467-024-46745-3

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