Electrooxidation of catecholamines at carbon nanotube-modified indium tin oxide electrodes

被引：13

作者：

Lin, Kuan-Wen ^{[1
]}

Lin, Chang-Hao ^{[1
]}

Hsieh, You-Zung ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu, Taiwan

来源：

ANALYTICA CHIMICA ACTA | 2008年 / 619卷 / 01期

关键词：

carbon nanotubes; electroanalysis; Nafion; tin indium oxide;

D O I：

10.1016/j.aca.2008.03.014

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, we prepared carbon nanotube (CNT)/Nafion-modified ITO electrodes and investigated their electrochemical behavior. The CNTs were dissolved in a solution of the ionic polymer Nafion and then CNT/Nafion composite films were deposited onto ITO electrodes through spin-coating of this homogeneous solution. We studied the effects of chemical pretreatment of the CNTs and the pH of the buffer on the electroanalytical behavior of the CNT/Nafion-modified ITO electrodes toward catecholamines. The modified electrodes enhanced the peak current and lowered the overpotentials. We observed high electrooxidative performance for the modified ITO electrodes: the oxidative currents of the catecholamines were up to 125-fold higher than those obtained using bare ITO electrodes. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：49 / 53

页数：5

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