Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14470
Title: The improvement of glucose bioelectrocatalytic properties of platinum electrodes modified with electrospun TiO2 nanofibers
Authors: Tang, H
Yan, F 
Tai, Q
Chan, HLW 
Keywords: Bioelectrocatalysis
Electrospinning
Glucose
Glucose oxidase
TiO2 nanofibers
Issue Date: 2010
Publisher: Elsevier
Source: Biosensors and bioelectronics, 2010, v. 25, no. 7, p. 1646-1651 How to cite?
Journal: Biosensors and bioelectronics 
Abstract: Pt electrodes have been modified with electrospun titanium dioxide (TiO2) nanofibers with controllable densities for electrochemical detection. The TiO2 nanofiber/Pt electrodes show excellent electrocatalytic activity to electro-oxidation of hydrogen peroxide and the response current density to an addition of hydrogen peroxide is 30% higher than that for a Pt electrode. Glucose oxidase (GOx) molecules have been effectively immobilized on the surface of the TiO2 nanofibers and the resulted chitosan/GOx/TiO2 nanofiber/Pt electrodes with a optimum density of nanofibers exhibit excellent glucose bioelectrocatalytic performance including good amperometric current response (9.25μAcm-2mM-1), short response time (10 s) and low detection limit (0.01 mM).Wehave found that the nanofibers modified on the Pt electrode improved the sensitivity of theenzymeelectrode to glucose for 2.7 times and extended the detection limit by one order of magnitude in comparison with flat Pt electrodes. It is expected that electrodes modified with electrospun TiO2 nanofibers will find more promising applications in high performance electrochemical biosensors.
URI: http://hdl.handle.net/10397/14470
ISSN: 0956-5663
EISSN: 1873-4235
DOI: 10.1016/j.bios.2009.11.027
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