Radiation-assisted electrochemical reduction of CO2 to CO

Carbon monoxide (CO) is a versatile intermediate feedstock for many applications, which can be produced from the electrochemical reduction of carbon dioxide (CO2). However, current electrochemical CO production is associated with high overall costs due to low conversion efficiencies and high energy...

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Bibliographic Details
Published in:Sustainable energy & fuels 2024-11
Main Authors: Morco, Ryan P., Diaz, Luis Alejandro, Ramirez Corredores, Maria Magdalena
Format: Article
Language:English
Online Access:Get full text
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Summary:Carbon monoxide (CO) is a versatile intermediate feedstock for many applications, which can be produced from the electrochemical reduction of carbon dioxide (CO2). However, current electrochemical CO production is associated with high overall costs due to low conversion efficiencies and high energy requirements. Here we report a unique way of enhancing the electrochemical reduction of CO2 to CO using gamma (γ) photons. γ-Irradiation of the electrochemical cell setup induces the production of e•− that results in an increase in CO2 ionization as well as production of excited CO2 (CO2*) molecule with lower energy barrier. The ionized (CO2•−) is quickly stabilized over a silver catalyst providing an alternative low activation energy route for CO2 reduction. A decrease on the overpotential barrier enhanced the electrochemical reduction of CO2 to CO by 25%.
ISSN:2398-4902
2398-4902
DOI:10.1039/D4SE00484A