Low potential detection of glucose at carbon nanotube modified glassy carbon electrode with electropolymerized poly(toluidine blue O) film

被引：47

作者：

Yao, Yan-Li ^{[1
]}

Shiu, Kwok-Keung ^{[1
]}

机构：

[1] Hong Kong Baptist Univ, Dept Chem, Kowloon, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2007年 / 53卷 / 02期

关键词：

toluidine blue O; carbon nanotubes; mediator electrode; glucose determination; TOLUIDINE BLUE-O; ELECTROCHEMICAL POLYMERIZATION; AMPEROMETRIC DETERMINATION; OXIDASE; ENZYME; BIOSENSORS;

D O I：

10.1016/j.electacta.2007.04.007

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A mediator glucose biosensor has been constructed by immobilizing glucose oxidase at electropolymerized poly(toluidine blue O) film on carbon nanotube modified glass carbon electrode. The toluidine blue O moieties served as redox mediators for enzymatic glucose oxidation and as polymeric network to maintain the biosensor activity. Great enhancement in current response was observed for the glucose biosensor. The detection potential could be decreased to -0.1 V (versus Ag/AgCl), where common interferences such as ascorbic acid, uric acid and acetamidophenol were not oxidized to cause interferences. The amperometric glucose biosensor offered a sensitivity of 14.5 mA M-1 cm(-2) for the linear range of 1-7 mM. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：278 / 284

页数：7

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