Facile electron delivery from graphene template to ultrathin metal-organic layers for boosting CO2 photoreduction

Jia-Wei Wang, Li-Zhen Qiao, Hao-Dong Nie, Hai-Hua Huang, Yi Li, Shuang Yao, Meng Liu, Zhi-Ming Zhang (), Zhen-Hui Kang and Tong-Bu Lu
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Jia-Wei Wang: Tianjin University of Technology
Li-Zhen Qiao: Tianjin University of Technology
Hao-Dong Nie: Soochow University
Hai-Hua Huang: Sun Yat-sen University
Yi Li: Soochow University
Shuang Yao: Tianjin University of Technology
Meng Liu: Tianjin University of Technology
Zhi-Ming Zhang: Tianjin University of Technology
Zhen-Hui Kang: Soochow University
Tong-Bu Lu: Tianjin University of Technology

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Metal-organic layers with ordered structure and molecular tunability are of great potential as heterogeneous catalysts due to their readily accessible active sites. Herein, we demonstrate a facile template strategy to prepare metal-organic layers with a uniform thickness of three metal coordination layers (ca. 1.5 nm) with graphene oxide as both template and electron mediator. The resulting hybrid catalyst exhibits an excellent performance for CO2 photoreduction with a total CO yield of 3133 mmol g–1MOL (CO selectivity of 95%), ca. 34 times higher than that of bulky Co-based metal-organic framework. Systematic studies reveal that well-exposed active sites in metal-organic layers, and facile electron transfer between heterogeneous and homogeneous components mediated by graphene oxide, greatly contribute to its high activity. This work highlights a facile way for constructing ultrathin metal-organic layers and demonstrates charge transfer pathway between conductive template and catalyst for boosting photocatalysis.

Date: 2021
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DOI: 10.1038/s41467-021-21084-9

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