Ensemble of carbon fiber ultra-microelectrodes modified with nanotubes, and its application to the determination of dopamine

被引：0
|
作者：
Weixia Qing
Xiuhua Liu
Huimin Lu
Ji Liang
Kuaizhi Liu
机构：
[1] Henan University,Department of Chemistry and Chemical Engineering
[2] Henan University,Institute of Natural Products and Medicine Chemistry
[3] Henan University,Lab of Specially Functional Materials
[4] Tsinghua University,Department of Mechanics
来源：
Microchimica Acta | 2008年 / 160卷
关键词：
Keywords: Carbon fiber ultra-microelectrode; carbon nanotubes; modified electrode; dopamine;
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学科分类号：
摘要：
An ensemble of carbon fibers ultra-microelectrode modified with carbon nanotubes (EUME-CNTS) has been constructed based on a thin carbon nanotubes film which was coated onto surfaces of carbon fibers of ultra-microelectrode. SEM micrographs illustrated the image of carbon nanotubes on the carbon fiber surface. The electrochemical characteristics of the EUME-CNTS has been investigated by cyclic voltammetry. The electrochemical properties of dopamine on this electrode were also studied, and the detection limit was found to be 2.0 × 10−9 mol·L−1. Linear calibration plots were obtained for the oxidation peak current in a range 1.0 × 10−7–8.0 × 10−5 mol·L−1.
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页码：227 / 231
页数：4
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