The inhibition of hydrogen peroxide reduction at low potentials on Pt(111): Hydrogen adsorption or interfacial charge?
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Título: | The inhibition of hydrogen peroxide reduction at low potentials on Pt(111): Hydrogen adsorption or interfacial charge? |
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Autor/es: | Briega-Martos, Valentín | 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: | Oxygen reduction reaction | Hydrogen peroxide reduction | Pt(111) | Platinum single crystal | Hydrogen adsorption | Interfacial charge | Potential zero free charge |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | dic-2017 |
Editor: | Elsevier |
Cita bibliográfica: | Electrochemistry Communications. 2017, 85: 32-35. doi:10.1016/j.elecom.2017.10.016 |
Resumen: | The hydrogen peroxide reduction reaction (HPRR) on Pt(111) has been studied for the first time in acid to neutral pH values in the absence of anion specific adsorption using the HMRDE configuration. The onset for the reduction is ca. 0.95 V (RHE) for the Pt(111), irrespective of the pH value. At more negative potential values, the reduction is inhibited. It has been found that the diminution of the activity on Pt(111) occurs at the same potential value in the SHE scale for the different pH values. This indicates that this deactivation is not dependent on the hydrogen adsorption process, as has been previously suggested. However, it appears to be related to the interface water reorganization and the potential of zero free charge of the metal surface. In addition, studies in alkaline conditions suggest that the presence of adsorbed OH species promotes the total conversion of hydrogen peroxide to water. |
Patrocinador/es: | This work has been financially supported by the MCINN-FEDER (Spain) through project CTQ2016-76221-P. VBM thankfully acknowledges to MINECO the award of a pre-doctoral grant (BES-2014-068176, project CTQ2013-44803-P). |
URI: | http://hdl.handle.net/10045/73627 |
ISSN: | 1388-2481 (Print) | 1873-1902 (Online) |
DOI: | 10.1016/j.elecom.2017.10.016 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2017 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.elecom.2017.10.016 |
Aparece en las colecciones: | INV - EQSUP - Artículos de Revistas |
Archivos en este ítem:
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2017_Briega-Martos_etal_ElectrCom_final.pdf | Versión final (acceso restringido) | 412,47 kB | Adobe PDF | Abrir Solicitar una copia |
2017_Briega-Martos_etal_ElectrCom_preprint.pdf | Preprint (acceso abierto) | 1,31 MB | Adobe PDF | Abrir Vista previa |
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