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Highly active conversion of CO2 to CO on AuCuB materials.

Authors :
Liu, Yuting
Fang, Yuan
Yuan, Qinghong
Lu, Jiaxing
Wang, Huan
Source :
Green Chemistry; 2/21/2023, Vol. 25 Issue 4, p1339-1344, 6p
Publication Year :
2023

Abstract

The electrochemical CO<subscript>2</subscript> reduction reaction is an attractive solution for converting CO<subscript>2</subscript> into reusable chemicals. However, the low activity of the catalysts restricts its widespread application for conversion. This study uses a simple one-pot method to prepare B-doped AuCu alloy (AuCuB) materials. AuCuB-400 demonstrated a superior faradaic efficiency (FE) for CO [99% at −1.16 V vs. the reversible hydrogen electrode (RHE)], whereas the FE<subscript>CO</subscript> of AuCu was much lower (42%). Operando electrochemical Raman spectroscopy and density functional theory (DFT) calculations revealed that incorporating B could tune the electronic structure of AuCu to promote the adsorption of CO intermediates, thus facilitating the conversion of CO<subscript>2</subscript> to CO. These findings will provide a good approach for designing highly active alloy catalysts for converting CO<subscript>2</subscript> to CO. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14639262
Volume :
25
Issue :
4
Database :
Complementary Index
Journal :
Green Chemistry
Publication Type :
Academic Journal
Accession number :
161987141
Full Text :
https://doi.org/10.1039/d2gc04659h