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

Kuan Wen Lin; Chang Hao Lin; You-Zung Hsieh

doi:10.1016/j.aca.2008.03.014

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

Kuan Wen Lin, Chang Hao Lin, You-Zung Hsieh^*

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	49-53
Number of pages	5
Journal	Analytica Chimica Acta
Volume	619
Issue number	1
DOIs	https://doi.org/10.1016/j.aca.2008.03.014
State	Published - 30 Jun 2008

Keywords

Carbon nanotubes
Electroanalysis
Nafion
Tin indium oxide

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title = "Electrooxidation of catecholamines at carbon nanotube-modified indium tin oxide electrodes",

abstract = "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.",

keywords = "Carbon nanotubes, Electroanalysis, Nafion, Tin indium oxide",

author = "Lin, {Kuan Wen} and Lin, {Chang Hao} and You-Zung Hsieh",

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T1 - Electrooxidation of catecholamines at carbon nanotube-modified indium tin oxide electrodes

AU - Lin, Kuan Wen

AU - Lin, Chang Hao

AU - Hsieh, You-Zung

PY - 2008/6/30

Y1 - 2008/6/30

N2 - 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.

AB - 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.

KW - Carbon nanotubes

KW - Electroanalysis

KW - Nafion

KW - Tin indium oxide

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