Microwave-assisted synthesis of carbon-supported Pt nanoparticles for their use as electrocatalysts in the oxygen reduction reaction and hydrogen evolution reaction
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Título: | Microwave-assisted synthesis of carbon-supported Pt nanoparticles for their use as electrocatalysts in the oxygen reduction reaction and hydrogen evolution reaction |
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Autor/es: | Jaimes-Paez, Cristian Daniel | Vences-Alvarez, Esmeralda | Salinas-Torres, David | Morallon, Emilia | Rangel-Mendez, José René | Cazorla-Amorós, Diego |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Platinum nanoparticles | Microwaves | Electrocatalysts | ORR | HER |
Fecha de publicación: | 11-jul-2023 |
Editor: | Elsevier |
Cita bibliográfica: | Electrochimica Acta. 2023, 464: 142871. https://doi.org/10.1016/j.electacta.2023.142871 |
Resumen: | Pt nanoparticles were incorporated on carbon black (Vulcan XC-72R) and an activated carbon (F400) using a fast and efficient microwave method. For the preparation, a Pt solution was contacted with the corresponding carbon sample and heated up to 110°C in a microwave oven using an optimised heating rate. TEM images revealed that the carbon-supported Pt nanoparticles had a small average particle size and high dispersion. These Pt-based electrocatalysts showed both high electrocatalytic activity and selectivity towards the 4-electron pathway for the oxygen reduction reaction (ORR) in acid and alkaline media. In addition, they presented excellent stability and resistance to CO poisoning. Moreover, the as-prepared electrocatalysts exhibited outstanding electrocatalytic behaviour for the hydrogen evolution reaction (HER). It should be highlighted that, even though our Pt-based electrocatalysts have much lower loadings than that of the commercial Pt/C sample (used as reference), the electroactive surface areas of as-prepared electrocatalysts were higher compared to the reference electrocatalyst. Such small and well-dispersed Pt NPs with an enhanced electroactive surface area and strong interaction with the carbon support, led to an improvement of the current density normalised by Pt loading (A gPt−1). |
Patrocinador/es: | The authors would like to thank PID2019-105923RB-I00 and PID2021-123079OB-I00 projects project funded by MCIN/AEI/10.13039/501100011033 and “ERDF A way of making Europe”, the Generalitat Valenciana (GRISOLIA/2020/114) and CONACYT project SEP-CB-2014-01-237118 and FORDECYT-2018-8-297525 for their financial support. |
URI: | http://hdl.handle.net/10045/136104 |
ISSN: | 0013-4686 (Print) | 1873-3859 (Online) |
DOI: | 10.1016/j.electacta.2023.142871 |
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-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.electacta.2023.142871 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas INV - MCMA - Artículos de Revistas |
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