Hollow Au1Cu1(111) bimetallic catalyst promotes the selective electrochemical conversion of glycerol into glycolic acid

Shen, Lingqin, Sun, Luyao, Douthwaite, Mark, Akdim, Ouardia, Taylor, Stuart ORCID: https://orcid.org/0000-0002-1933-4874 and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 2024. Hollow Au1Cu1(111) bimetallic catalyst promotes the selective electrochemical conversion of glycerol into glycolic acid. ACS Catalysis , 11343–11351. 10.1021/acscatal.4c00483

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Abstract

Electrochemical catalysis of polyols enables precise control over the cleavage of C–C and C–O bonds, facilitating high selectivity toward high-value glycolic acid. Here, we report that a hollow spheroidal bimetallic Au1Cu1 catalyst demonstrates high activity and selectivity toward glycerol, 1,2-propanediol, and ethylene glycol electrooxidation. Under the optimized conditions, glycerol conversion and glycolic acid selectivity reached 90 and 45%, respectively. The Au1Cu1 catalyst exhibits good stability after multiple cycles of electrolysis. Structural characterization and density functional theory (DFT) calculations confirmed that the hollow structure of the catalyst enhances the electrochemical surface area, with the Au1Cu1(111) facet facilitating the selective electrocatalytic conversion of glycerol to glycolic acid.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	American Chemical Society
ISSN:	2155-5435
Funders:	Max Planck Centre for Fundamental Heterogeneous Catalysis (FUNCAT)
Date of First Compliant Deposit:	24 July 2024
Date of Acceptance:	8 July 2024
Last Modified:	05 Aug 2024 09:47
URI:	https://orca.cardiff.ac.uk/id/eprint/170893

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