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Nonenzymatic Glucose Detection by Using a Three‐Dimensionally Ordered, Macroporous Platinum Template
Author(s) -
Song YanYan,
Zhang Dai,
Gao Wei,
Xia XingHua
Publication year - 2005
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200400981
Subject(s) - platinum , platinum nanoparticles , ascorbic acid , biosensor , electrochemistry , materials science , electrode , fabrication , chemical engineering , selectivity , nanoparticle , electrocatalyst , nanotechnology , inorganic chemistry , chemistry , catalysis , organic chemistry , medicine , alternative medicine , food science , pathology , engineering
A three‐dimensionally ordered, macroporous, 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.