Electrochemical behaviour of benzoic acid on platinum and gold electrodes
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Título: | Electrochemical behaviour of benzoic acid on platinum and gold electrodes |
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Autor/es: | Montilla, Francisco | Morallon, Emilia | Vázquez Picó, José Luis |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Benzoic acid | Spectroelectrochemistry | Platinum electrode | Gold electrode |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 29-oct-2003 |
Editor: | American Chemical Society |
Cita bibliográfica: | MONTILLA JIMÉNEZ, Francisco; MORALLÓN NÚÑEZ, Emilia; VÁZQUEZ PICÓ, José Luis. “Electrochemical behaviour of benzoic acid on platinum and gold electrodes”. Langmuir. Vol. 19, No. 24 (2003). ISSN 0743-7463, pp. 10241-10246 |
Resumen: | A voltammetric and spectroscopic study of the adsorption and oxidation of benzoic acid on platinum and gold electrodes has been carried out in acid medium. The oxidation of benzoic acid depends on the surface structure of the platinum electrode. Benzoic acid is adsorbed through the carboxylate group in a twofold coordination at potentials above 0.4V/RHE on platinum electrodes and above 0.5V/RHEon a gold electrode. However, at lower potential it is adsorbed through the aromatic ring. The analysis of the potential dependent band center frequencies and integrated band intensities indicates that lateral interactions between adsorbed benzoate anions are responsible for the frequency shift observed with increasing potential. On platinum electrodes benzoic acid is reduced to cyclohexanecarboxylic acid at low potentials and is oxidized to CO2, quinones, and lactones, similarly to other aromatic compounds such as benzene. On gold electrodes, it is oxidized mainly to CO2. |
Patrocinador/es: | Ministerio de Ciencia y Tecnología (MAT2001-1007) and Generalitat Valenciana (GV01-313). |
URI: | http://hdl.handle.net/10045/15299 |
ISSN: | 0743-7463 (Print) | 1520-5827 (Online) |
DOI: | 10.1021/la0346705 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Langmuir, copyright © American Chemical Society after peer review. To access the final edited and published work, see http://dx.doi.org/10.1021/la0346705 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1021/la0346705 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas |
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Archivo | Descripción | Tamaño | Formato | |
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langmuir 2003 19 10241-10246.pdf | Versión final (acceso restringido) | 102,08 kB | Adobe PDF | Abrir Solicitar una copia |
langmuir_pre.pdf | Versión revisada (acceso libre) | 214,22 kB | Adobe PDF | Abrir Vista previa |
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