Wang Joseph, Deo Randhir P, Poulin Philippe, Mangey Maryse
Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
J Am Chem Soc. 2003 Dec 3;125(48):14706-7. doi: 10.1021/ja037737j.
Carbon nanotube (CNT) fibers have been used to fabricate microelectrodes with an attractive electrochemical behavior. By combining the advantages of CNT materials and fiber microelectrodes, the new material expands the scope of CNT-based electrochemical devices. The CNT fiber offers a marked decrease in the overvoltage for the NADH, dopamine, and hydrogen peroxide and circumvents NADH surface fouling effects. Heat treatment is shown to be extremely useful for activating the CNT fiber surfaces for electron transfer. SEM imaging and cyclic-voltammetric data indicate that the heat treatment leads to the removal of nonconducting residues and exposure of a "fresh" CNT surface. The new electrode material thus presents new opportunities for a wide range of electrochemical and analytical applications.
碳纳米管（CNT）纤维已被用于制造具有吸引人的电化学行为的微电极。通过结合CNT材料和纤维微电极的优点，这种新材料扩展了基于CNT的电化学装置的范围。CNT纤维使NADH、多巴胺和过氧化氢的过电压显著降低，并避免了NADH表面污染效应。结果表明，热处理对于激活CNT纤维表面以进行电子转移非常有用。扫描电子显微镜（SEM）成像和循环伏安数据表明，热处理导致不导电残留物的去除和“新鲜”CNT表面的暴露。因此，这种新型电极材料为广泛的电化学和分析应用提供了新的机会。
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