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Investigating the effects of pyridine and poly(4-vinylpyridine) on CO2 reduction electrocatalysis at gold electrodes using in-situ surface-enhanced Raman spectroelectrochemistry

Abstract

CO2 reduction (CO2RR) at metal electrodes is altered in the presence of pyridine and related species. Thick films of poly(4-vinylpyridine) on Au electrodes result in large current enhancements at low applied potentials but do not enhance CO2RR at these potentials. Surface-enhanced Raman spectroelectrochemistry can probe CO2-surface interactions and reveals desorption of CO2 as bicarbonate is retarded in the presence of 4-PVP, with implications for ion-transport limitations in thick film CO2RR.

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Article information


Submitted
04 Feb 2020
Accepted
18 May 2020
First published
21 May 2020

Phys. Chem. Chem. Phys., 2020, Accepted Manuscript
Article type
Paper

Investigating the effects of pyridine and poly(4-vinylpyridine) on CO2 reduction electrocatalysis at gold electrodes using in-situ surface-enhanced Raman spectroelectrochemistry

J. J. Walsh, Phys. Chem. Chem. Phys., 2020, Accepted Manuscript , DOI: 10.1039/D0CP00632G

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