The use of a metallic bilayer for the oxidation of small organic molecules

Autor(es)

Oliveira, R. T. S. ; Marcussi, B. G. ; Nascente, P. A. P. ; Bulhões, Luis Otavio de Sousa ; Santos, Mauro Coelho dos ^[5]

• Tipo de documento: Artigo Científico
• Fonte: Journal of Electroanalytical Chemistry; v. 575, n. 2, p. 177-182, Feb. 2005.
• Área do conhecimento: Ciências Exatas e da Terra - Química
• Assunto(s): Voltametria Espectroscopia de raio X Oxidação

Resumo

This paper presents the preparation of a completely new Pt/Rh/Pt multilayer. This material was characterized by means of X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry (where the change in the electroactive area in the material during the deposition of the bilayer was discarded). The material was further tested for the oxidation of small organic molecules (methanol, ethanol, formaldehyde and formic acid) with the aid of cyclic voltammetry and chronoamperometry. In this study, increases of 295%, 266%, 140% and 380% in the voltammetric peak current density for methanol, ethanol, formaldehyde, and formic acid oxidation at the Pt/Rh/Pt bilayer, respectively, are presented. (AU)

• Processo FAPESP: 01/06029-3 - Eletrocatalise da oxidacao de pequenas moleculas organicas com eletrodos modificados.
• Beneficiário: Mauro Coelho dos Santos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado