Please use this identifier to cite or link to this item:
https://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: | https://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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