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Cited by 518

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

Stabilizing Cu2+ Ions by Solid Solutions to Promote CO2 Electroreduction to Methane

Zhou, Xianlong, Shan, Jieqiong, Chen, Ling, Xia, Bao Yu, Ling, Tao, Duan, Jingjing, Jiao, Yan, Zheng, Yao, Qiao, Shi-Zhang·2022·Journal of the American Chemical Society

Abstract

Copper is the only metal catalyst that can perform the electrocatalytic CO 2 reduction reaction (CRR) to produce hydrocarbons and oxygenates. Its surface oxidation state determines the reaction pathway to various products. However, under the cathodic potential of CRR conditions, the chemical composition of most Cu-based catalysts inevitably undergoes electroreduction from Cu 2+ to Cu 0 or Cu 1+ species, which is generally coupled with phase reconstruction and the formation of new active sites. Since the initial Cu 2+ active sites are hard to retain, there have been few studies about Cu 2+ catalysts for CRR. Herein we propose a solid-solution strategy to stabilize Cu 2+ ions by incorporating them into a CeO 2 matrix, which works as a self-sacrificing ingredient to protect Cu 2+ active species. In situ spectroscopic characterization and density functional theory calculations reveal that compared with the conventionally derived Cu catalysts with Cu 0 or Cu 1+ active sites, the Cu 2+ species in the solid solution (Cu-Ce-O x ) can significantly strengthen adsorption of the *CO intermediate, facilitating its further hydrogenation to produce CH 4 instead of dimerization to give C 2 products. As a result, different from most of the other Cu-based catalysts, Cu-Ce-O x delivered a high Faradaic efficiency of 67.8% for CH 4 and a low value of 3.6% for C 2 H 4 .

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Metadata

Authors
Zhou, X., Shan, J., Chen, L., Xia, B. Y., Ling, T., Duan, J., Jiao, Y., Zheng, Y., & Qiao, S.-Z.
Venue
Journal of the American Chemical Society
Published
2022-01-28
Volume
144
Issue
5
Pages
2079-2084
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W4210597164
Cited by
518
References
30
FWCI
18.58
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Stabilizing Cu2+ Ions by Solid Solutions to Promote CO2 Electroreduction to Methane. https://app.cochat.ai/papers/10.1021/jacs.1c12212
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Zhou, X., Shan, J., Chen, L., Xia, B. Y., Ling, T., Duan, J., Jiao, Y., Zheng, Y., & Qiao, S.-Z. (2022). Stabilizing Cu2+ Ions by Solid Solutions to Promote CO2 Electroreduction to Methane. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.1c12212

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