Application of multi-walled carbon nanotubes modified carbon ionic liquid electrode for electrocatalytic oxidation of dopamine

被引：18
|
作者：
Li, Yonghong [1 ]
Liu, Xinsheng [2 ]
Liu, Xiaoying [1 ]
Mai, Nannan [1 ]
Li, Yuandong [1 ]
Wei, Wanzhi [1 ]
Cai, Qingyun [1 ]
机构：
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
[2] Hunan Nonferrous Xiangxiang Fluoride Chem Co Ltd, Xiangxiang 411400, Hunan, Peoples R China
来源：
COLLOIDS AND SURFACES B-BIOINTERFACES | 2011年 / 88卷 / 01期
基金：
美国国家科学基金会;
关键词：
Carbon ionic liquid electrode; Multi-walled carbon nanotubes; Square wave voltammetry; Dopamine; Selective detection; ASCORBIC-ACID; SELECTIVE DETERMINATION; PASTE ELECTRODE; GOLD ELECTRODE; URIC-ACID;
D O I：
10.1016/j.colsurfb.2011.07.021
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
A simple, sensitive, and reliable method based on a multi-walled carbon nanotubes (MWNTs) modified carbon ionic liquid electrode (CILE) has been successfully developed for determination of dopamine (DA) in the presence of ascorbic acid (AA). The acid-treated MWNTs with carboxylic acid functional groups could promote the electron-transfer reaction of DA and inhibit the voltammetric response of AA. Due to the good performance of the ionic liquid, the electrochemical response of DA on the MWNTs/CILE was better than that of other MWNTs modified electrodes. Under the optimum conditions a linear calibration plot was obtained in the range 5.0 x 10(-8) to 2.0 x 10(-4) mol L(-1) and the detection limit was 1.0 x 10(-8) mol L(-1). (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：402 / 406
页数：5
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