Efficient electroreduction of CO to acetate using a metal-azolate framework with dicopper active sites

Electrochemical reduction of CO to value-added products, especially C 2 products, provides a potential approach to achieve carbon neutrality and overcome the energy crisis. Herein, we report a metal-azolate framework (CuBpz) with dicopper active sites as an electrocatalyst for the electrochemical CO...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2023-10, Vol.52 (42), p.15317-1532
Main Authors: Zhu, Hao-Lin, Han, Yu-Xuan, Liao, Pei-Qin, Chen, Xiao-Ming
Format: Article
Language:English
Subjects:
Chemical reduction
Current density
Electrocatalysts
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Summary:Electrochemical reduction of CO to value-added products, especially C 2 products, provides a potential approach to achieve carbon neutrality and overcome the energy crisis. Herein, we report a metal-azolate framework (CuBpz) with dicopper active sites as an electrocatalyst for the electrochemical CO reduction reaction (eCORR). As a result, CuBpz achieved an impressive faradaic efficiency (FE) of 47.8% for yielding acetate with a current density of −200 mA cm −2 , while no obvious degradation was observed over 60 hours of continuous operation at a current density of −200 mA cm −2 . Mechanism studies revealed that the dicopper site can promote C-C coupling between two C 1 intermediates, thereby being conducive to the generation of the key *CH 2 COOH intermediate. The dicopper site in a metal-azolate framework result in an enhanced electroreduction selectivity and current density of CO for yielding acetate.
ISSN:1477-9226
1477-9234
DOI:10.1039/d3dt00921a