An electrically heated ionic-liquid/multi-wall carbon nanotube composite electrode and its application to electrochemiluminescent detection of ascorbic acid

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• 作者：Yiting Chen ; Xiaoping Chen ; Zhenyu Lin ; Hong Dai ; Bin Qiu ; Jianjun Sun ; Lan Zhang ; Guonan Chen
• 关键词：Electrochemiluminescence ; Heated electrode ; Ionic liquid ; Ascorbic acid
• 刊名：Electrochemistry Communications
• 出版年：2009
• 出版时间：June 2009
• 年：2009
• 卷：11
• 期：6
• 页码：1142-1145
• 全文大小：249 K

文摘

A heated composite electrode consisted of multi-wall carbon nanotube (MWNT) and ionic liquids (ILs) was designed and fabricated. The non-conductive binders were replaced by a conductive IL, n-octylpyridinum hexafluorophosphate (OPFP). This heated OPFP/MWNT composite electrode was applied for electrochemiluminescent (ECL) sensor, and the performance of ECL sensor was evaluated by ascorbic acid (AA)/lucigenin ECL system. The new heated electrode combines the advantages of ILs/CNT and heated electrode, showing high thermal stability and conductivity, simple heating setups, improved reproducibility, renewable surface, simplicity of fabrication and enhanced sensitivity with detection limit (S/N = 3) of 0.01 μmol/L for AA.