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As an important part of carbon neutralization, carbon dioxide electroreduction reaction (CO2RR) can convert CO2 into high value-added chemicals and fuels to realize the recycling of carbon resources and solve the problem of environmental pollution. Therefore, exploring the element species and surface structure of the catalyst plays a central role in improving the performance of the catalyst, enhancing the CO2 conversion efficiency and forming C1 and C2+ products. Here, we summarize the recent progress in the selective regulation of CO2RR reaction products by different elements. In particular, we emphasize the structure-property relationship of CO2RR by the microenvironment of metal center and substrate, heteroatom doping, hydrogen bond network of metal-free polymer, and construction of heterogeneous catalytic system. At the same time, the recent advances for the identification of CO2RR active sites and mechanistic studies on the process of reducing CO2 conversion to different products are reviewed, as well as a comprehensive review to the final products. Finally, we outline the inevitable challenges faced by CO2RR and present our own recommendations aimed at contributing to CO2 resource utilization.


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How to select heterogeneous CO2 reduction electrocatalyst

Show Author's information Ji ShenDingsheng Wang( )
Department of Chemistry, Tsinghua University, Beijing 100084, China

Abstract

As an important part of carbon neutralization, carbon dioxide electroreduction reaction (CO2RR) can convert CO2 into high value-added chemicals and fuels to realize the recycling of carbon resources and solve the problem of environmental pollution. Therefore, exploring the element species and surface structure of the catalyst plays a central role in improving the performance of the catalyst, enhancing the CO2 conversion efficiency and forming C1 and C2+ products. Here, we summarize the recent progress in the selective regulation of CO2RR reaction products by different elements. In particular, we emphasize the structure-property relationship of CO2RR by the microenvironment of metal center and substrate, heteroatom doping, hydrogen bond network of metal-free polymer, and construction of heterogeneous catalytic system. At the same time, the recent advances for the identification of CO2RR active sites and mechanistic studies on the process of reducing CO2 conversion to different products are reviewed, as well as a comprehensive review to the final products. Finally, we outline the inevitable challenges faced by CO2RR and present our own recommendations aimed at contributing to CO2 resource utilization.

Keywords: electrocatalyst, electrochemical performances, C2+ product, CO2RR, C1 product

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Publication history

Received: 01 August 2023
Revised: 18 August 2023
Accepted: 20 August 2023
Published: 05 September 2023
Issue date: March 2024

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© The Author(s) 2023. Published by Tsinghua University Press.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 22171157).

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