Artículos de revistas
Nanostructured Films Based on Carbon Nanotubes and Cobalt for the Electrocatalytic Reduction of H(2)O(2)
Fecha
2011Registro en:
ELECTROCHEMICAL AND SOLID STATE LETTERS, v.14, n.9, p.P21-P23, 2011
1099-0062
10.1149/1.3602200
Autor
GASPAROTTO, Luiz H. S.
ZUCOLOTTO, Valtencir
OLIVEIRA JUNIOR, Osvaldo Novais de
SIQUEIRA JR., Jose R.
Institución
Resumen
This paper presents the fabrication of a nanothick Co-modified film electrochemically synthesized on layer-by-layer (LbL) structures made with dendrimer polyamidoamine/carbon nanotubes (PAMAM/CNT), and its electrocatalytic properties toward H(2)O(2) reduction. Scanning electron microscopy indicated the formation of a homogeneous, 14 nm thick Co film. The porous nature of the PAMAM/CNT LbL film allowed the electrolyte access to the bottom of the electrode, generating a homogenous Co electrodeposit. In addition, the nanostructure based on Co-modified PAMAM/CNT LbL exhibited high electrocatalytic activity for H(2)O(2) reduction when compared to the Co-free PAMAM/CNT LbL film, which demonstrates the suitability of the system studied for biosensing. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3602200] All rights reserved.