Platinum nanoparticle-modified electrodes, morphologic, and electrochemical studies concerning electroactive materials deposition

Autor(es)

Vidotti, Marcio ; Goncales, Vinicius R. ^[1] ; Quartero, Vinicius S. ^[1] ; Danc, Barbara ^[1] ; Cordoba de Torresi, Susana I. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Solid State Electrochemistry; v. 14, n. 4, p. 675-679, APR 2010.
• Citações Web of Science: 10

Resumo

The present work describes the synthesis of platinum nanoparticles followed by their electrophoretic deposition onto transparent fluorine-doped tin oxide electrodes. The nano-Pt-modified electrodes were characterized by voltammetric studies in acidic solutions showing a great electrocatalytic behavior towards H(+) reduction being very interesting for fuel cell applications. Morphological characterization was performed by atomic force microscopy on different modified electrodes showing a very rough surface which can be tuned by means of time of deposition. Also, nickel hydroxide thin films were galvanostatically grown onto these electrodes showing an interesting electrochemical behavior as sharper peaks, indicating a faster ionic exchange from the electrolyte to the film. (AU)

• Processo FAPESP: 05/59560-9 - Nanoestruturação de filmes finos para utilização em eletrodos enzimáticos
• Beneficiário: Vinicius Romero Gonçales
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto