改性石墨烯修饰电极同时测定苯二酚异构体  

Preparation of Modified Graphene and Its Electrochemical Application in Simultaneous Determination of Catechol and Hydroquinone

作　　者：张颖[1] 李澳 张琴[1] 何雨坤[1] 杜维妱 

机构地区：[1]乐山师范学院化学学院,四川乐山614000

出　　处：《广州化工》2017年第11期125-128,共4页GuangZhou Chemical Industry

基　　金：四川省教育厅项目(16ZB0296);乐山师范学院校级项目(Z1506);乐山师范学院大学生创新创业项目(201610649099)

摘　　要：采用电化学沉积的方法在石墨烯表面形成规整的二氧化锰结构,用4%草酸溶液去除二氧化锰,得到新型的二氧化锰改性石墨烯修饰电极。运用该电极对邻苯二酚(CT)和对苯二酚(HQ)的电化学性质进行研究。实验表明:在最优条件下修饰电极测得邻苯二酚和对苯二酚的氧化峰电位差为105 mV,还原峰电位差为122 mV,因此可用于苯二酚异构体的同时检测。Grapheme modified electrode was fabricated firstly via synthesizing highly ordered MnO2 nanorod arrays on grapheme film, using a simple and controllable electrochemical technique. Then the modified electrode was immersed into 4% oxalic acid to remove MnO/, a new （HQ） , catechol （CT）, was investigated modified electrode was obtained. The electrochemical oxidation of hydroquinone using cyclic and differential pulse vohammetry at the modified electrode. It was found that the separations of the oxidation peak potential and restore peak potential were 105 mV and 122 mV between HQ and CT, respectively, which can be used for both selective and simultaneous determination of HQ and CT.

关 键 词：石墨烯 修饰电极 邻苯二酚 对苯二酚 

分 类 号：O656.31[理学—分析化学]