Simultaneous determination of hydroquinone and catechol using covalent layer-by-layer self-assembly of carboxylated-MWNTs

被引：69
作者：
Feng, Shuqing [1 ]
Zhang, Yayun [1 ]
Zhong, Yanmei [1 ]
Li, Yancai [1 ,2 ]
Li, Shunxing [1 ,2 ]
机构：
[1] Minnan Normal Univ, Coll Chem & Environm, Zhangzhou 363000, Peoples R China
[2] Minnan Normal Univ, Fujian Prov Key Lab Modern Analyt Sci & Separat T, Zhangzhou 363000, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2014年 / 733卷
基金：
中国国家自然科学基金;
关键词：
Layer-by-layer self-assembly; Carboxylated multi-wall carbon nanotubes; Hydroquinone; Catechol; Simultaneous determination; GLASSY-CARBON ELECTRODE; REDUCED GRAPHENE OXIDE; IONIC LIQUID; RESORCINOL; NANOTUBES; PHENOL; FILMS; SENSOR; NADH;
D O I：
10.1016/j.jelechem.2014.09.019
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A carboxylated multi-wall carbon nanotubes (CMWNTs) layer-by-layer (LBL) self-assembled film was prepared using ethylenediamine as an arm linker. Scanning electron microscopy (SEM) characterized the morphology of the LBL self-assembled film and Fourier transform infrared (FT-IR) spectroscopy confirmed the formation of covalent bond between CMWNTs and ethylenediamine. The electrochemical experiments indicated that the modified electrodes can simultaneously determinate hydroquinone (HQ) and catechol (CC). Differential pulse voltammetry (DPV) exhibited the oxidation peak current of HQ was linear to its concentration in the range of 10-120 mu M with the detection limit of 2.3 mu M in the presence of 0.1 mM CC, and at the same time the oxidation peak current of CC was linear to its concentration in the range of 5-80 mu M with the detection limit of 1 mu M in the presence of 0.1 mM HQ Moreover, the CMWNTs modified electrode also showed excellent selectivity and stability. (C) 2014 Elsevier B.V. All rights reserved.
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页码：1 / 5
页数：5
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