Simple Fabrication of Porous Gold-Film Electrodes and Their Electroanalytical Applications

A simple strategy to fabricate porous three-dimensional gold-film electrodes using gold-coated microspheres (AuMS) is presented. The AuMS deposited on gold (AuMS/Au) are electrically interconnected, and show unique electrochemical properties indicating porous surface structures. The AuMS/Au electrod...

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Bibliographic Details
Published in:Analytical Sciences 2010/01/10, Vol.26(1), pp.129-132
Main Authors: HYUN, Myeounghee, CHOI, Suhee, KIM, Jongwon
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
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Summary:A simple strategy to fabricate porous three-dimensional gold-film electrodes using gold-coated microspheres (AuMS) is presented. The AuMS deposited on gold (AuMS/Au) are electrically interconnected, and show unique electrochemical properties indicating porous surface structures. The AuMS/Au electrodes exhibit electrocatalytic activities for oxygen reduction and peroxide oxidation, which indicates that the apparent macroporous structures also retain porous regions with nanometer-scale dimensions. The porous structures on AuMS/Au electrodes also provide a selective voltammetric response for glucose against ascorbic acid due to the different electron-transfer kinetics. Since AuMS/Au electrodes are simple to prepare compared with previously suggested systems, the present system could offer potential in electroanalytical applications as new gold-based substrates for further modifications of surfaces.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.26.129