多孔炭载聚钴酞菁修饰电极用于苯二酚的电催化及检测  

Electrocatalytic Activity and Detection of Dihydroxybenzenes on Porous Carbon Loading Polymerized Phthalocyanatocobalt Modified Eelectrode

作　　者：次素琴[1] 战磊[1] 邹建平[1] 曾桂生[1] 冯红彬[2] 温珍海[1] 李景虹[2] 

机构地区：[1]江西省生态诊断修复与污染阻断重点实验室,南昌航空大学环境与工程学院,南昌330063 [2]清华大学微量分析测试方法与仪器研制北京市重点实验室,化学系,北京100086

出　　处：《分析化学》2013年第8期1238-1242,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金(No.20903055);江西省自然科学基金(No.2009GZH0085);江西省教育厅重点项目(No.GJJ09019)资助

摘　　要：以二氧化硅纳米球为模板,通过葡萄糖的水热聚合反应制备了具有三维结构的多孔炭(PC)。采用电化学聚合方法将单体钴酞菁聚合在多孔炭修饰的玻碳电极(PC/GC)表面,制备了多孔炭载聚钴酞菁的修饰电极(Co-TAPc/PC/GC)。通过循环伏安法(CV)研究了间苯二酚、邻苯二酚和对苯二酚在此修饰电极的电化学响应。结果表明,相对于裸玻碳电极、多孔炭或聚钴酞菁单独修饰的电极,该修饰电极对3种同分异构体的酚类物质均有更好的电催化活性。利用计时安培技术,该修饰电极对间苯二酚、邻苯二酚及对苯二酚分别在5.0×10-6～5.0×10-4 mol/L,6.0×10-6～2.5×10-4 mol/L和2.0×10-6～8.0×10-4 mol/L范围内具有较好的线性响应。此修饰电极具有制备简单、响应灵敏、稳定性好等优点。Nanostructured carbon with three-dimensional（3D） porous structure was prepared through polymerization of glucose by using silica nanoparticles as template.Cobalt phthalocyanine（CoTAPc） was successfully electropolymerized on the surface of porous carbon modified glassy carbon electrodes（PC/GC） to prepare porous carbon loading polymeric phthalocyatanocobalt modified electrode（p-CoTAPc/PC/GC）.Cyclic voltammetry was conducted to investigate the response of the resorcinol,catechol and hydroquinone on the p-CoTAPc/PC/GC electrode.The p-CoTAPc/PC/GC showed better electrocatalytic performance on these dihydroxybenzene than the bare GC,PC/GC,and p-CoTAPc/GC.Chronoamperometry was then used for the determination of the resorcinol,catechol and hydroquinone with concentrations ranged from 5.0×10-6-5.0×10-4 mol/L,6.0×10-6-2.5×10-4 mol/L,and 2.0×10-6-8.0×10-4 mol/L,respectively based on the p-CoTAPc/PC/GC.

关 键 词：多孔炭 钴酞菁 电化学聚合 化学修饰电极 苯二酚 

分 类 号：O657.1[理学—分析化学]