On the activity and stability of Sb2O3/Sb nanoparticles for the electroreduction of CO2 toward formate
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Título: | On the activity and stability of Sb2O3/Sb nanoparticles for the electroreduction of CO2 toward formate |
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Autor/es: | Avila-Bolivar, Beatriz | Montiel, Vicente | Solla-Gullón, José |
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: | Activity | CO2 reduction | Electrocatalysis | Formate | Sb2O3/Sb electrodes | Stability |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 2-jun-2021 |
Editor: | Elsevier |
Cita bibliográfica: | Journal of Electroanalytical Chemistry. 2021, 895: 115440. https://doi.org/10.1016/j.jelechem.2021.115440 |
Resumen: | The development of new electrocatalysts with improved properties for the electrochemical reduction of CO2 is being the objective of innumerable contributions. In this contribution, the electrochemical reduction of CO2 to formate on novel carbon-supported antimony nanoparticles (Sb/C NPs) is studied. The carbon-supported Sb2O3/Sb nanoparticles were synthesised using a simple methodology at room temperature and characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The Sb2O3/Sb/C electrodes were prepared by air-brushed onto a carbon paper and were characterized by scanning electron microscopy and energy-dispersive X-ray spectroscopy. The Sb2O3/Sb/C electrodes were also electrochemically characterized by cyclic voltammetry and displayed a clear activity for CO2 electroreduction. To evaluate the properties of the electrodes for the reduction of CO2, electrolyses at different potentials were systematically conducted. Hydrogen and formate were the only products found. The faradic efficiency towards formate was found to be about 20%. This FE was in good agreement with previous finding obtained with comparable system. Interestingly, 24-hour tests were carried out to analyse the stability of the material under working conditions. The results indicate that Sb2O3/Sb-based electrodes display a remarkably better stability than other nanostructured electrocatalysts such as Sn or Bi. |
Patrocinador/es: | This work was supported by the MINECO, through the projects CTQ2016-76231-C2-2-R (AEI/FEDER, UE) and PID2019-108136RB-C32. Also, the invitation by the E3TECH Spanish Network of Excellence (CTQ2017-90659-REDT (MEIC/AEI)) is kindly acknowledged. |
URI: | http://hdl.handle.net/10045/115446 |
ISSN: | 1572-6657 (Print) | 1873-2569 (Online) |
DOI: | 10.1016/j.jelechem.2021.115440 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.jelechem.2021.115440 |
Aparece en las colecciones: | INV - LEQA - Artículos de Revistas |
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