期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 11, 期 7, 页码 2177-2182出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200400981
关键词
biosensors; electo-chemistry; glucose; nanoparticles; platinum; scanning probe microscopy
A three-dimensionally ordered, inacroporous, inverse-opal platinum film was synthesized electrochemically by the inverted colloidal-crystal template technique. The inverse-opal film that contains platinum nanoparticles showed improved electrocatalytic activity toward glucose oxidation with respect to the directly deposited platinum; this improvement is due to the interconnected porous structure and the greatly enhanced effective surface area. In addition, the inverse-opal Pt-film electrode responds more sensitively to glucose than to common interfering species of ascorbic acid, uric acid, and p-acetamidophenol due to their different electrochemical reaction mechanisms. Results showed that the ordered macroporous materials with enhanced selectivity and sensitivity are promising for fabrication of nonenzymatic glucose biosensors.
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