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Title: Nonenzymatic glucose detection using multi-walled carbon nanotube electrodes
Authors: Ye, J.-S. 
Wen, Y.
Zhang, W.D.
Gan, L.M.
Xu, G.Q. 
Sheu, F.-S. 
Keywords: Carbon nanotubes
Issue Date: Jan-2004
Citation: Ye, J.-S., Wen, Y., Zhang, W.D., Gan, L.M., Xu, G.Q., Sheu, F.-S. (2004-01). Nonenzymatic glucose detection using multi-walled carbon nanotube electrodes. Electrochemistry Communications 6 (1) : 66-70. ScholarBank@NUS Repository.
Abstract: The electrocatalytic oxidation of glucose in alkaline medium directly at well-aligned multi-wall carbon nanotubes (MWNTs) electrodes has been investigated in the present study. Compared to glassy carbon electrode, a substantial (+400 mV) decrease in the overvoltage of the glucose oxidation reaction was observed at MWNTs electrodes with oxidation starting at ca. +0.10 V (vs. 3 M KCl-Ag|AgCl). The electrocatalytic effect is mainly attributed to carbon nanotubes with possible minor contributions from the Co catalysts present on the Ta substrate. At an applied potential of +0.20 V, MWNTs electrodes give a high and reproducible sensitivity of 4.36 μA cm -2 mM-1 in the presence of high concentration of chloride ion. The well-aligned MWNTs electrode thus allows highly sensitive, low-potential, stable, and fast amperometric sensing of glucose, promising for the development of nonenzymatic glucose sensors. © 2003 Elsevier B.V. All rights reserved.
Source Title: Electrochemistry Communications
ISSN: 13882481
DOI: 10.1016/j.elecom.2003.10.013
Appears in Collections:Staff Publications

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