Abstract
Amperometric glucose sensors with a diameter of less than 10 μm were fabricated by the immobilization of glucose oxidase ( GOx ) on carbon fiber electrodes. Carbon fiber electrodes with platinum thin film were also prepared using electroplating and sputtering. The combination of electrodeposition and electropolymerization was employed for the immobilization of GOx . Although the introduction of Pt film satisfactorily improved the oxidation current of the electrode to hydrogen peroxide, sensitivities of obtained GOx -immobilized electrodes to glucose were not significant. Formation of electroplated-platinum thin film on carbon fiber was effective to reduce the influence of electroactive compounds existing in biological fluid such as ascorbic and uric acids.
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