金属有机框架衍生的多孔碳修饰电极同时检测邻苯二酚和对苯二酚  

An Electrode Modified with Porous Carbon Derived from Metal Organic Frameworks for Simultaneous Determination of Catechol and Hydroquinone

作　　者：吴艺津 周海逢[1] 李顺兴[1,2] WU Yi-jin ZHOU Hai-feng LI Shun-xing(College of Chemistry and Environment Science ,Minnan Normal University ,Zhangzhou 363000 Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University ,Zhangzhou 363000)

机构地区：[1]闽南师范大学化学与环境学院,福建漳州363000 [2]福建省现代分离分析科学与技术重点实验室,闽南师范大学,福建漳州363000

出　　处：《分析科学学报》2017年第1期11-16,共6页Journal of Analytical Science

基　　金：国家自然科学基金(No.21175115,21475055)

摘　　要：本文运用金属有机框架(MOFs)作为模板,在惰性气体下热处理,合成金属有机框架衍生多孔碳材料(Metal Organic Frameworks Derived Porous Carbon,MDPC)。采用扫描电子显微镜(SEM)和X射线粉末衍射(XRD)分别对MDPC进行形貌和相纯度的表征。采用滴涂法将MDPC修饰在玻碳电极表面,运用循环伏安法(CV)、差分脉冲伏安法(DPV)、交流阻抗法(EIS)等电化学方法对该电极进行电化学表征,研究邻苯二酚(CC)和对苯二酚(HQ)在MDPC修饰电极上的电化学行为。结果表明,该修饰电极对CC和HQ这两种异构体表现出优异的氧化还原电活性和区分效果。在最佳实验条件下,CC和HQ的浓度在0.5~80μmol/L的范围内与氧化峰电流呈现良好的线性关系。CC和HQ的检测限分别为0.031μmol/L和0.11μmol/L。该方法电流响应大、灵敏度高、检测限低,具有实际应用前景。In this paper,we used metal organic frameworks（MOFs）as a template to synthesize a metal organic frameworks derived porous carbon（MDPC）by heating with inert gas.And then,the morphology and phase purity of MDPC were observed with scanning electron microscopy（SEM）and X-ray diffraction（XRD）measurement.At last,the MDPC was dropped to the surface of glassy carbon electrode（MDPC/GCE）,and cyclic voltammetry（CV）,differential pulse voltammetry（DPV）and electrochemical impedance spectroscopy（EIS）were used to study the electrochemical behavior.The MDPC modified electrodes were appied to simultaneous determination of catechol（CC）and hydroquinone（HQ）.The experiment results showed that MDPC/GCE exhibited strong electroactivity of redox and highly distinguishing ability toward two dihydroxyhenzene isomers.Under the optimum experimental conditions,the oxidation peak current was linearly proportional to the concentration of CC and HQ in the range of 0.5-80μmol/L.The detection limit of CC and HQ were 0.031μmol/L and 0.11μmol/L,respectively.

关 键 词：金属有机框架 多孔碳 邻苯二酚和对苯二酚 电化学检测 

分 类 号：O657.1[理学—分析化学]