Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5051
Title: Oxygen reduction and diffusion in electroactive nanostructured membranes (ENM) using a layer-by-layer dendrimer-gold nanoparticle approach
Authors: Crespilho, Frank N. 
Nart, Francisco C. 
Oliveira Jr., Osvaldo N. 
Brett, Christopher M. A. 
Keywords: Gold nanoparticle electrodes; Electroactive nanostructured membranes; PAMAM dendrimers; Oxygen reduction; Layer-by-layer
Issue Date: 2007
Citation: Electrochimica Acta. 52:14 (2007) 4649-4653
Abstract: The fabrication of an electroactive nanostructured membrane (ENM) for oxygen reduction, made of layer-by-layer (LbL) films comprising Au nanoparticle-containing amine-terminated G4 PAMAM dendrimer alternated with poly(vinylsulfonic acid) (PVS) layers is reported. Electrochemical impedance spectroscopy and cyclic voltammetry show that electrodes with PVS/PAMAM-Au multiple bilayers are efficient for oxygen reduction and diffusion. A linear increase of oxygen reduction current occurs for up to 3 bilayers, with no further significant increase occurring for more than 3 bilayers. The 3-bilayer PVS/PAMAM-Au electrode, as an Au-ENM, is an attractive new system with potential for building diverse electrocatalytic devices with high molecular control.
URI: http://hdl.handle.net/10316/5051
DOI: 10.1016/j.electacta.2007.01.048
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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