Cathodic reduction of CO2 to formic acid: Effect of the nature of the cathode for pressurized systems
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Título: | Cathodic reduction of CO2 to formic acid: Effect of the nature of the cathode for pressurized systems |
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Autor/es: | Proietto, Federica | Rinicella, Riccardo | Galia, Alessandro | Avila-Bolivar, Beatriz | Montiel, Vicente | Solla-Gullón, José | Scialdone, Onofrio |
Grupo/s de investigación o GITE: | Electroquímica Aplicada y Electrocatálisis |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | CO2 reduction | Formic acid | Pressure | Tin | Bismuth | Electrochemistry |
Fecha de publicación: | 12-abr-2023 |
Editor: | Elsevier |
Cita bibliográfica: | Journal of Environmental Chemical Engineering. 2023, 11(3): 109903. https://doi.org/10.1016/j.jece.2023.109903 |
Resumen: | Electrochemical conversion of CO2 into formic acid (FA) in an aqueous electrolyte is considered a promising strategy to valorise waste-CO2. Some studies, mainly performed using Sn cathodes, have shown that the performance of the process can be strongly improved using pressurized systems. On the other hand, other studies, usually carried out in non-pressurized systems, have indicated that the nature of the cathode can strongly affect the process. Hence, in this work, we have investigated the coupled effect of nature of the cathode and CO2 pressure (PCO2 ) on the electrochemical conversion of CO2 to FA. Four electrodes (Sn, Sn/C-NP, Bi, Bi/C-NP) have been used as model cathodes. The results obtained have shown that the increase of PCO2 enhances the production of FA and the faradic efficiency of the process (FEFA) for all tested cathodes. Moreover, it has been observed that nanoparticle-based cathodes provided better results for electrolyses carried out at 1 bar and high current density. Conversely, at relatively high PCO2 , the effect of the nature of the cathode becomes less important and bulk Sn and Bi electrodes display very interesting results in terms of production of FA, FEFA and stability. |
URI: | http://hdl.handle.net/10045/133878 |
ISSN: | 2213-3437 |
DOI: | 10.1016/j.jece.2023.109903 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.jece.2023.109903 |
Aparece en las colecciones: | INV - LEQA - Artículos de Revistas |
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Proietto_etal_2023_JEnvironChemEng.pdf | 3,51 MB | Adobe PDF | Abrir Vista previa | |
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