Browsing by Author "Lin, Chang-Hao"

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Electrooxidation of catecholamines at carbon nanotube-modified indium tin oxide electrodes
(2008-06-30)
Lin, Kuan-Wen
;
Lin, Chang-Hao
;
Hsieh, You-Zung
;
應用化學系
;
Department of Applied Chemistry
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.