Issue 2, 2025

Radiation-assisted electrochemical reduction of CO2 to CO

Abstract

Carbon monoxide (CO) is a versatile intermediate feedstock for many applications and can be produced through the electrochemical reduction of carbon dioxide (CO2). However, current electrochemical CO production is hindered by high overall costs, primarily due to low conversion efficiencies and significant energy requirements. Herein, we report a unique way of enhancing the electrochemical reduction of CO2 to CO using gamma (γ) photons. The γ-irradiation applied to the electrochemical cell setup induces the production of e˙, which results in an increased CO2 ionization and production of excited CO2Image ID:d4se00484a-t1.gif molecules via 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 in the overpotential barrier enhanced the electrochemical reduction of CO2 to CO by 25%.

Graphical abstract: Radiation-assisted electrochemical reduction of CO2 to CO

Article information

Article type
Communication
Submitted
10 Apr 2024
Accepted
22 Nov 2024
First published
22 Nov 2024

Sustainable Energy Fuels, 2025,9, 424-431

Radiation-assisted electrochemical reduction of CO2 to CO

R. P. Morco, L. A. Diaz and M. M. Ramirez-Corredores, Sustainable Energy Fuels, 2025, 9, 424 DOI: 10.1039/D4SE00484A

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