Physical Chemistry

pH and Anion Effects on Cu-Phosphate Interfaces for CO Electroreduction

Abstract

Herein, we have investigated the interfacial properties of Cu(111) and Cu(100) in phosphate buffer solutions at different pH conditions and in presence of CO. Ab initio molecular simulations of the Cu-electrolyte interface were combined with voltammetric experiments carried out on Cu(100) and Cu(111) single-crystalline electrodes. We show that the adsorption strength of phosphate species on the different Cu facets affects the potential range at which CO poisons the surface. The properties of the Cu-electrolyte interface controls the potential range for CO reduction on Cu.

Content

Thumbnail image of 202012_Cu-CO_ACScatal.pdf

Supplementary material

Thumbnail image of 021220_SI_ACScatal.pdf
021220 SI ACScatal
Thumbnail image of 202012_Cu-CO_ACScatal.docx
202012 Cu-CO ACScatal
Thumbnail image of 021220_SI_ACScatal.docx
021220 SI ACScatal