Potential modulated reflectance study of the electrooxidation of simple amino acids on Pt(111) in acidic media
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Título: | Potential modulated reflectance study of the electrooxidation of simple amino acids on Pt(111) in acidic media |
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Autor/es: | Huerta Arráez, Francisco | Morallon, Emilia | Quijada Tomás, César | Vázquez Picó, José Luis | Berlouis, L.E.A. |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | University of Strathclyde. Department of Pure and Applied Chemistry |
Palabras clave: | Electroreflectance | Low index crystal surfaces | Amino acids | Platinum |
Área/s de conocimiento: | Química Física |
Fecha de creación: | 2000 |
Fecha de publicación: | 28-jul-2000 |
Editor: | Elsevier |
Cita bibliográfica: | HUERTA ARRÁEZ, Francisco, et al. "Potential modulated reflectance study of the electrooxidation of simple amino acids on Pt(111) in acidic media". Journal of Electroanalytical Chemistry. Vol. 489, Issues 1-2 (28 July 2000). ISSN 0022-0728, pp. 92-95 |
Resumen: | The electroreflectance (ER) technique has been applied to the study of the electrooxidation of some simple amino acids (glycine, serine and alanine) on a Pt(111) surface in acid medium. A different behaviour in the (1:R)(#R:#E) response as a function of applied potential has been observed during the positive and negative scans as consequence of the formation of adsorbed cyanide originating from the oxidation of glycine and serine. Alanine on the other hand does not readily form significant amounts of adsorbed cyanide on the first oxidation cycle. The integrated ER spectra (ΔR:R) of the three amino acids have also shown that the reversible adsorption of the glycinate, serinate and alaninate anions is initiated at ca. 0.35 V and reaches maximum coverage at ca. 0.7 V. This reversible adsorption produces changes in the reflectivity comparable to that displayed by bisulphate adsorption. |
Patrocinador/es: | Ministerio de Educación y Cultura programa F.P.I. postdoctoral fellowships. Dirección General de Enseñanza Superior e Investigación Científica (PB97-0130) |
URI: | http://hdl.handle.net/10045/2702 |
ISSN: | 0022-0728 |
DOI: | 10.1016/S0022-0728(00)00202-3 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/S0022-0728(00)00202-3 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas |
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Archivo | Descripción | Tamaño | Formato | |
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Journal of Electroanalytical Chemistry 489 (2000) 92–95.pdf | Versión final (acceso restringido) | 84,61 kB | Adobe PDF | Abrir Solicitar una copia |
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