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Engineering Surface Oxophilicity of Copper for Electrochemical CO 2 Reduction to Ethanol.

Authors :
Li M
Song N
Luo W
Chen J
Jiang W
Yang J
Source :
Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2023 Jan; Vol. 10 (2), pp. e2204579. Date of Electronic Publication: 2022 Nov 17.
Publication Year :
2023

Abstract

Copper-based materials are known for converting CO <subscript>2</subscript> into deep reduction products via electrochemical reduction reaction (CO <subscript>2</subscript> RR). As the major multicarbon products (C <subscript>2+</subscript> ), ethanol (C <subscript>2</subscript> H <subscript>5</subscript> OH) and ethylene (C <subscript>2</subscript> H <subscript>4</subscript> ) are believed to share a common oxygenic intermediate according to theoretical studies, while the key factors that bifurcate C <subscript>2</subscript> H <subscript>5</subscript> OH and C <subscript>2</subscript> H <subscript>4</subscript> pathways on Cu-based catalysts are not fully understood. Here, a surface oxophilicity regulation strategy to enhance C <subscript>2</subscript> H <subscript>5</subscript> OH production in CO <subscript>2</subscript> RR is proposed, demonstrated by a Cu-Sn bimetallic system. Compared with bare Cu catalyst, the Cu-Sn bimetallic catalysts show improved C <subscript>2</subscript> H <subscript>5</subscript> OH but suppressed C <subscript>2</subscript> H <subscript>4</subscript> selectivity. The experimental results and theoretical calculations demonstrate that the surface oxophilicity of Cu-Sn catalysts plays an important role in steering the protonation of the key oxygenic intermediate and guides the reaction pathways to C <subscript>2</subscript> H <subscript>5</subscript> OH. This study provides new insights into the electrocatalyst design for enhanced production of oxygenic products from CO <subscript>2</subscript> RR by engineering the surface oxophilicity of copper-based catalysts.<br /> (© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.)

Details

Language :
English
ISSN :
2198-3844
Volume :
10
Issue :
2
Database :
MEDLINE
Journal :
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
Publication Type :
Academic Journal
Accession number :
36394094
Full Text :
https://doi.org/10.1002/advs.202204579