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《Environmental Science》 2013-03
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Preparation of OMC-Au/L-Lysine/Au Modified Glassy Carbon Electrode and the Study on Its Detection Response to Hydroquinone and Catechol

ZHOU Yao-yu1,2,TANG Lin1,2,LI Zhen1,2,LIU Yuan-yuan1,2,YANG Gui-de1,2,WU Meng-shi1,2,LEI Xiao-xia1,2,ZENG Guang-ming1,2(1.College of Environmental Science and Engineering,Hunan University,Changsha 410082,China;2.Key Laboratory of Environmental Biology and Pollution Control,Ministry of Education,Hunan University,Changsha 410082,China)  
Ordered mesoporous carbon-Au nanoparticles(OMC-Au) nanocomposites were synthesized by a one-step chemical reduction route,and an OMC-Au/L-Lysine/Au composite film-modified glassy carbon electrode(GCE) was constructed.The microstructure of OMC and OMC-Au/L-Lysine/Au composite films were characterized by SEM,and the preparation process of OMC-Au/L-Lysine/Au modified glassy carbon electrode was investigated using cyclic voltammetry and electrochemical impedance spectroscopy.The electrocatalytic oxidation of hydroquinone and catechol on the modified electrode was discussed by differential pulse voltammetry in this study,and a sensor for separate determination of hydroquinone and catechol based on OMC-Au/L-Lysine/Au modified glassy carbon electrode was developed.Under the optimal conditions,the cathodic peak current was linearly related to hydroquinone concentration over ranges from 1.0×10-6 mol·L-1 to 8.0×10-4 mol·L-1 with a detection limit of 3.0×10-7 mol·L-1,and linearly related to catechol concentration from 1.0×10-7 mol·L-1 to 8.0×10-5 mol·L-1 with a detection limit of 8.0×10-7 mol·L-1.
【Fund】: 教育部新世纪优秀人才支持计划项目(NCET-11-0129);; 中央高校基本科研业务费专项;; 湖南省优秀博士学位论文科研项目;; 教育部长江学者有创新团队发展计划项目(IRT0719);; 国家自然科学基金项目(51222805 50608029 51039001 50978088)
【CateGory Index】: X830.2;O657.1
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