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Direct electron transfer of glucose oxidase immobilized in an ionic liquid reconstituted cellulose-carbon nanotube matrix

Wu, X, Zhao, F, Varcoe, JR, Thumser, AE, Avignone-Rossa, C and Slade, RCT (2009) Direct electron transfer of glucose oxidase immobilized in an ionic liquid reconstituted cellulose-carbon nanotube matrix Bioelectrochemistry, 77 (1). 64 - 68. ISSN 1567-5394

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Abstract

Conductive cellulose-multiwalled carbonnanotube (MWCNT) matrix with a porous structure and good biocompatibility has been prepared using a room temperature ionicliquid (1-ethyl-3-methylimidazolium acetate) as solvent. Glucoseoxidase (GOx) was encapsulated in this matrix and thereby immobilized on a glassy carbon surface. The directelectrontransfer and electrocatalysis of the encapsulated GOx has been investigated using cyclic voltammetry and chronoamperometry. The GOx exhibited a pair of stable, well defined and nearly symmetric reversible redox peaks. The experimental results also demonstrate that the immobilized GOx retains its biocatalytic activity toward the oxidation of glucose and therefore can be employed in a glucose biosensor. The results show that the bioelectrode modified by the cellulose-MWCNT matrix has potential for use in biosensors and other bioelectronics devices.

Item Type: Article
Additional Information: NOTICE: this is the author’s version of a work that was accepted for publication in Bioelectrochemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bioelectrochemistry, 77(1), November 2009, DOI 10.1016/j.bioelechem.2009.05.008.
Divisions: Faculty of Engineering and Physical Sciences > Chemistry
Depositing User: Mr Adam Field
Date Deposited: 13 Jun 2012 13:34
Last Modified: 09 Jun 2014 13:40
URI: http://epubs.surrey.ac.uk/id/eprint/375314

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