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

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


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 languageEnglish
Pages (from-to)49-53
Number of pages5
JournalAnalytica Chimica Acta
Issue number1
StatePublished - 30 Jun 2008


  • Carbon nanotubes
  • Electroanalysis
  • Nafion
  • Tin indium oxide

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