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Enzyme Electrodes for Glucose Oxidation Prepared by Electropolymerisation of Pyrrole

Lookup NU author(s): Professor Eileen Yu


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In this work, a method of fabricating enzyme electrodes with the potential application for biofuel cells and biosensors was investigated. Enzyme electrodes were prepared by entrapping native glucose oxidase (GOx) and ferrocene wired GOx (FeFcGOx), as the dopants, in conducting polypyrrole matrices by electropolymerisation. Furthermore, the developed polymer enzyme layer was characterised by physical and electrochemical analysis, and glucose oxidation activity on both electrodes was studied. Both electrodes showed direct electrical communication between the enzyme and electrode surface. Low glucose oxidation current was observed from the electrode containing GOx. Higher glucose oxidation current was obtained with FeFcGOx, and the current increased with the escalating glucose concentration suggesting that efficient electron transfer between the enzyme and the electrode surface were achieved. A maximum sensitivity of 20 mM for glucose concentration was obtained for the polymer electrode prepared from FeFcGOx.

Publication metadata

Author(s): Yu EH, Sundmacher K

Publication type: Article

Publication status: Published

Journal: Process Safety and Environmental Protection

Year: 2007

Volume: 85

Issue: 5

Pages: 489-493

ISSN (print): 0957-5820

ISSN (electronic): 1744-3598

Publisher: Elsevier Ltd


DOI: 10.1205/psep07031


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