Issue 46, 2022

Theoretical investigation of selective CO2 capture and desorption controlled by an electric field

Abstract

Low-cost carbon dioxide (CO2) capture technologies have been studied widely. Among such technologies, the control of CO2 adsorption by the application of an electric field to solid materials has been shown to be a promising technology that can combine high CO2 adsorption with low energy consumption. Suitable materials must be found for electric field-assisted CO2 adsorption. For this study, the CO2 adsorption energies of CeO2 partially substituted with hetero-cations were investigated using theoretical calculations. The differences in adsorption performance attributable to the application of an electric field were clarified for different doped cations. The results show that the amount of change in the CO2 adsorption energy by the application of an electric field depended on the different doped cations. Furthermore, it is found that this difference in cations is related to the electronegativity of the doped cations. These results suggest a tuning strategy for the material properties necessary for CO2 capture and separation using an electric field.

Graphical abstract: Theoretical investigation of selective CO2 capture and desorption controlled by an electric field

Supplementary files

Article information

Article type
Paper
Submitted
04 Sep 2022
Accepted
24 Oct 2022
First published
26 Oct 2022
This article is Open Access
Creative Commons BY-NC license

Phys. Chem. Chem. Phys., 2022,24, 28141-28149

Theoretical investigation of selective CO2 capture and desorption controlled by an electric field

K. Saegusa, K. Chishima, H. Sampei, K. Ito, K. Murakami, J. G. Seo and Y. Sekine, Phys. Chem. Chem. Phys., 2022, 24, 28141 DOI: 10.1039/D2CP04108A

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