Preparation of PtSn/C-Rh and PtSn/C-CeO2 for Ethanol Electro-Oxidation

Autor(es)

Brambilla De Souza, Rodrigo Fernando ^[1] ; Tusi, Marcelo Marques ^[2] ; Brandalise, Michele ^[2] ; Dias, Ricardo Rodrigues ^[2] ; Linardi, Marcelo ^[2] ; Spinace, Estevam Vitorio ^[2] ; dos Santos, Mauro Coelho ^[1] ; Oliveira Neto, Almir ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Abc, CCNH, LEMN, BR-09210170 Santo Andre, SP - Brazil

^[2] IPEN CNEN SP, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Electrochemical Science; v. 5, n. 6, p. 895-902, JUN 2010.
• Citações Web of Science: 15

Resumo

PtSn/CeO(2)-C electrocatalyst and PtSn/Rh-C were prepared in a two step. In the first step a Carbon Vulcan XC72 + 15%CeO(2) and Vulcan XC72 + 15%Rh supports were prepared using a modified polymeric precursor method under controlled synthesis conditions. In the second step PtSn electrocatalyst was prepared by an alcohol-reduction process using ethylene glycol as solvent and reducing agent and supported on Vulcan XC72 + 15%CeO(2) and Vulcan XC72 + 15% Rh. The obtained electrocatalysts were characterized by XRD and cyclic voltammetry. The electro-oxidation of ethanol was studied by cyclic voltammetry and chronoamperometry at room temperature. PtSn(50:50)/CeO(2)-C electrocatalyst showed a significant increase of performance for ethanol oxidation compared to PtSn/C catalyst and others electrocatalysts prepared. (AU)

• Processo FAPESP: 05/59992-6 - Materiais nanoestruturados: eletrocatálise e membranas de óxidos
• Beneficiário: Mauro Coelho dos Santos
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 09/09145-6 - Estudo do mecanismo de oxidação eletroquímica de etanol com eletrocatalisadores de PtSn, PtCe e PtSnCe utilizando técnicas espectroscópicas in-situ
• Beneficiário: Rodrigo Fernando Brambilla de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 07/07898-1 - Preparação e caracterização de sistemas PtRu/C + Terras Raras e PtSn/C + Terras Raras para emprego em células a combustível do tipo eletrólito polimérico sólido alimentadas diretamente por etanol
• Beneficiário: Almir Oliveira Neto
• Modalidade de apoio: Auxílio à Pesquisa - Regular