Nonenzymatic glucose detection by using a three-dimensionally ordered, macroporous platinum template |
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Authors: | Song Yan-Yan Zhang Dai Gao Wei Xia Xing-Hua |
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Institution: | Key Laboratory for Life Science Analytical Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093, P. R. China. |
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Abstract: | 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. |
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Keywords: | biosensors electrochemistry glucose nanoparticles platinum scanning probe microscopy |
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