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

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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Lin, K. W., Lin, C. H., & Hsieh, Y-Z. (2008). Electrooxidation of catecholamines at carbon nanotube-modified indium tin oxide electrodes. Analytica Chimica Acta, 619(1), 49-53. https://doi.org/10.1016/j.aca.2008.03.014

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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.",

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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.

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