Potential modulated reflectance study of the electrooxidation of simple amino acids on Pt(111) in acidic media
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Title: | Potential modulated reflectance study of the electrooxidation of simple amino acids on Pt(111) in acidic media |
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Authors: | Huerta Arráez, Francisco | Morallon, Emilia | Quijada Tomás, César | Vázquez Picó, José Luis | Berlouis, L.E.A. |
Research Group/s: | Electrocatálisis y Electroquímica de Polímeros |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | University of Strathclyde. Department of Pure and Applied Chemistry |
Keywords: | Electroreflectance | Low index crystal surfaces | Amino acids | Platinum |
Knowledge Area: | Química Física |
Date Created: | 2000 |
Issue Date: | 28-Jul-2000 |
Publisher: | Elsevier |
Citation: | 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 |
Abstract: | 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. |
Sponsor: | 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 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/S0022-0728(00)00202-3 |
Appears in Collections: | INV - GEPE - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Journal of Electroanalytical Chemistry 489 (2000) 92–95.pdf | Versión final (acceso restringido) | 84,61 kB | Adobe PDF | Open Request a copy |
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