The voltammetric sensor for sensitive determination of 8-hydroxyquinoline based on MWNTs/Nafion/GCE

被引：0
|
作者：
Zhou Yuanyuan [1 ]
Li Song [2 ]
机构：
[1] N China Univ Water Resources & Elect Power, Inst Environm & Municipal Engn, Zhengzhou, Peoples R China
[2] N China Univ Water Resources & Elect power, Inst Elect Power, Zhengzhou 450011, Peoples R China
来源：
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2011年 / 5卷 / 09期
关键词：
Multi-wall carbon nanotubes; Nafion; Coliforms; Amperometric detection; PERFORMANCE LIQUID-CHROMATOGRAPHY; GLASSY-CARBON ELECTRODE; NANOTUBES; BIOSENSORS; ROUTE; FILM;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A multiwall carbon nanotube/Nafion composite modified glassy carbon electrode (MWNT/Nafion/GCE) was prepared and characterized by Atomic Force Microscopy (AFM) and Transmission Electron Microscope(TEM). This voltammetric sensor exhibited strong catalytic effect toward the oxidation of 8- hydroxyquinoline(8-HQ) in HAc-NaAc buffer solution (0.2M, pH 3.6). A new analytical method for determining 8-HQ was established. Under the optimized condition, the anodic peak current was linear with the concentration of 8-HQ in the range of 2x10(-8)similar to 1.0x10(-5)M with a detection limit of 9x10(-9) M. The practical application of MWNT/Nafion/GCE was carried out for determining 8-HQ in cosmetic sample with satisfactory results. The number of electron and proton taking part in the reaction was calculated, and then the electrode reaction mechanism was confirmed by UV-vis spectra.
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页码：924 / 927
页数：4
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