Abstract
Nanowires of carbon coated ferric oxide (Fe2O3/C) have been studied to be applied at an electrochemical glucose biosensor as a new type of carbon paste electrode (CPE) modifier. The Fe2O3/C was synthesized by adapting co-precipitation hydrothermal route. Firstly, amperometric sensor based on a modified CPE doped with Fe2O3 has been developed and compared with CPE doped with Fe2O3/C for hydrogen peroxide (H2O2) determination. The performance evaluations for the modified materials and sensors were studied in detail through cyclic voltammetry (CV) method. After, the electrochemical sensor performance was also evaluated for glucose oxidase (GOx) response biosensor due to considerable interest in the blood sugar control. The results demonstrate that the GOx retains its biocatalytic activity toward the oxidation of glucose and that the bioelectrode modified by the Fe2O3/C matrix has potential for use in biosensors and other bioelectronics devices.
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