Nonenzymatic glucose detection by using a three-dimensionally ordered, macroporous platinum template.
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.
Song
Yan-Yan
YY
Key Laboratory for Life Science Analytical Chemistry, Department of Chemistry, Nanjing University, Nanjing 210093, P. R. China.
Zhang
Dai
D
Gao
Wei
W
Xia
Xing-Hua
XH
D004566:Electrodes; D005947:Glucose / Q000032:analysis / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry*; D016062:Porosity; D012680:Sensitivity and Specificity; D012822:Silicon Dioxide / Q000737:chemistry; D013499:Surface Properties
D008567:Membranes, Artificial; D010984:Platinum; D006046:Gold; D012822:Silicon Dioxide; D005947:Glucose