A Br− anion adsorbed porous Ag nanowire film: in situ electrochemical preparation and application toward efficient CO2 electroreduction to CO with high selectivity

Developing selective and cost-effective CO2 reduction electrocatalysts is critical for electrochemical production of carbon-containing fuels. In this communication, we report on the in situ fabrication of a bromide-derived porous Ag nanowire film (BD-Ag) with adsorbed Br− anions via anodic oxidation...

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Bibliographic Details
Published inInorganic chemistry frontiers Vol. 5; no. 9; pp. 2238 - 2241
Main Authors Qiu, Weibin, Liang, Ruping, Luo, Yonglan, Cui, Guangwei, Qiu, Jianding, Sun, Xuping
Format Journal Article
LanguageEnglish
Published London Royal Society of Chemistry 01.09.2018
Subjects
Anions
Anodizing
Carbon dioxide
Carbon monoxide
Chemical reduction
Electrocatalysts
Foils
Inorganic chemistry
Nanowires
Oxidation
Selectivity
Silver
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Summary:Developing selective and cost-effective CO2 reduction electrocatalysts is critical for electrochemical production of carbon-containing fuels. In this communication, we report on the in situ fabrication of a bromide-derived porous Ag nanowire film (BD-Ag) with adsorbed Br− anions via anodic oxidation of commerical Ag foil and subsequent electrochemical reduction. The resulting BD-Ag behaves as an efficient electrocatalyst for CO2 reduction to CO with high selectivity, with a low onset overpotential of only 296 mV and a high CO faradaic efficiency of 96.2% in 0.5 M KHCO3. Furthermore, it also shows excellent long-term electrochemical durability. This work offers an attractive catalyst material toward efficient and selective CO2 reduction for electrocatalytic applications.
ISSN:2052-1545
2052-1553
DOI:10.1039/c8qi00500a