Investigating the presence of adsorbed species on Pt steps at low potentials
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Título: | Investigating the presence of adsorbed species on Pt steps at low potentials |
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Autor/es: | Rizo, Rubén | Fernández-Vidal, Julia | Hardwick, Laurence J. | Attard, Gary A. | Vidal-Iglesias, Francisco J. | Climent, Victor | Herrero, Enrique | Feliu, Juan M. |
Grupo/s de investigación o GITE: | Electroquímica de Superficies |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | OH adsorption | Pt steps | Low potentials |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 10-may-2022 |
Editor: | Springer Nature |
Cita bibliográfica: | Nature Communications. 2022, 13:2550. https://doi.org/10.1038/s41467-022-30241-7 |
Resumen: | The study of the OH adsorption process on Pt single crystals is of paramount importance since this adsorbed species is considered the main intermediate in many electrochemical reactions of interest, in particular, those oxidation reactions that require a source of oxygen. So far, it is frequently assumed that the OH adsorption on Pt only takes place at potentials higher than 0.55 V (versus the reversible hydrogen electrode), regardless of the Pt surface structure. However, by CO displacement experiments, alternating current voltammetry, and Raman spectroscopy, we demonstrate here that OH is adsorbed at more negative potentials on the low coordinated Pt atoms, the Pt steps. This finding opens a new door in the mechanistic study of many relevant electrochemical reactions, leading to a better understanding that, ultimately, can be essential to reach the final goal of obtaining improved catalysts for electrochemical applications of technological interest. |
Patrocinador/es: | R.R, E.H, J.M.F and V.C. acknowledge Ministerio de Ciencia e Innovación (Spain) grant number PID2019-105653GB-I00 and FJC2018-038607-I and Generalitat Valenciana (Spain) grant number PROMETEO/2020/063. J.F.V. acknowledges PhD funding from UKRI Engineering and Physical Sciences Research Council (EPSRC). L.J.H. acknowledges support from Faraday Institution degradation project (FIRG001). |
URI: | http://hdl.handle.net/10045/123460 |
ISSN: | 2041-1723 |
DOI: | 10.1038/s41467-022-30241-7 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1038/s41467-022-30241-7 |
Aparece en las colecciones: | INV - EQSUP - Artículos de Revistas |
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