Electrocatalytic oxidation of urea by nanostructured nickel/cobalt hydroxide electrodes

Autor(es)

Vidotti‚ M. ; Silva‚ MR ; Salvador‚ RP ; Torresi‚ SI ; Dall’Antonia‚ LH

• Tipo de documento: Artigo Científico
• Fonte: Electrochimica Acta; v. 53, n. 11, p. 4030-4034, 2008.

Resumo

The present paper describes the catalytic oxidation of urea performed by nickel hydroxide and nickel/cobalt hydroxide modified electrodes by using both electrodeposited films and nanoparticles. The incorporation of Co foreign atoms leads to a slight increase in sensitivity besides the shift in redox process, avoiding the oxygen reaction. Nanostructured Ni80Co20(OH)(2) was synthesized by sonochemical route producing 5 nm diameter particles characterized by high-resolution transmission electron microscopy (HRTEM) being immobilized onto electrode by using the electrostatic Layer-by-layer technique, yielding attractive modified electrodes for sensor development. (C) 2007 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 03/00629-4 - Síntese e caracterização de eletrodos nanoestruturados modificados superficialmente, como materiais eletrocrômicos de alto desempenho
• Beneficiário: Marcio Eduardo Vidotti Miyata
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 03/10015-3 - Arranjos organizados de macromoléculas e nanoestruturas para o desenvolvimento de sensores e microbaterias
• Beneficiário: Roberto Manuel Torresi
• Modalidade de apoio: Auxílio à Pesquisa - Programa PRONEX - Temático