A nonenzymatic hydrogen peroxide sensor based on chitosan-copper complexes modified multi-wall carbon nanotubes ionic liquid electrode

被引:40
作者
Yu, Qiong [1 ]
Shi, Zhenshuan [2 ]
Liu, Xiaoying [1 ]
Luo, Shenglian [1 ]
Wei, Wanzhi [1 ]
机构
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ Sci & Technol, Coll Chem & Chem Engn, Xiangtan 411201, Peoples R China
基金
美国国家科学基金会;
关键词
Multi-wall carbon nanotubes; Ionic liquid electrode; Chitosan-copper complex; Nonenzymatic hydrogen peroxide sensor; FILM ELECTRODE; METAL-IONS; NANOPARTICLES; BIOSENSOR; GEL; CHEMILUMINESCENCE; IMMOBILIZATION; H2O2;
D O I
10.1016/j.jelechem.2010.12.030
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An electrode was developed for the determination of hydrogen peroxide (H(2)O(2)). It contains a chitosan-copper complex onto which multi-wall carbon nanotubes in an ionic liquid were deposited. The modified electrode exhibited excellent electrocatalytic activity that was applied to the detection of H(2)O(2). The pH value and the effect of electrical potential on the current response were optimized. The electrode displays good stability, an expanded linear response range, improved electrocatalytic activity towards H(2)O(2), and enables detection of H(2)O(2) with a linear response from 0.02 to 13 mM of H(2)O(2), with a correlation coefficient of 0.997 and a response time of <6 s. The detection limit is 1.0 mu M (at S/N = 3). Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:92 / 95
页数:4
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