Poly-(3-methylthiophene)/carbon nanotubes hybrid composite-modified electrodes

被引：52

作者：

Aguei, L. ^{[1
]}

Pena-Farfal, C. ^{[1
]}

Yanez-Sedeno, P. ^{[1
]}

Pingarron, J. M. ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Chem, Dept Analyt Chem, E-28040 Madrid, Spain

来源：

ELECTROCHIMICA ACTA | 2007年 / 52卷 / 28期

关键词：

carbon nanotubes; poly-(3-methylthiophene); NADH; FAD; cytochrome c;

D O I：

10.1016/j.electacta.2007.06.051

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The preparation of poly- (3 -methylthiophene)-multi-walled carbon nanotubes hybrid composite electrodes is reported. The hybrid electrode shows a synergic effect of the electrocatalytic properties, and high active surface area of both the conducting polymer and carbon nanotubes, which gives rise to a remarkable improvement of oxidation of NADH with respect to polymer-modified electrodes, and CNTs-modified electrodes. SEM showed that carbon nanotubes served as nanosized backbone for P3MT electropolymerization. The amperometric NADH detection at +300 mV provided fast responses, a range of linearity between 5.0 x 10(-7) and 2.0 x 10(-5) mol 1(-1), and a detection limit of 1.7 x 10(-7) mol 1(-1), which compares advantageously with those reported for other NADH CNT-based amperometric sensors. Furthermore, the direct electrochemistry of cytochrome c and FAD at the hybrid electrode is also checked, (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：7946 / 7952

页数：7

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