武汉工程大学学报2013，Vol.35Issue(2)：16-23,8.DOI:10.3969/j.issn.1674-2869.2013.02.004
石墨烯修饰电极同时测定邻苯二酚和对苯二酚
Simultaneous determination of catechol and hydroquinone in graphene modified electrode
摘要
Abstract
A novel graphene modified glassy carbon electrode was fabricated. The resulting substrates were characterized by Cyclic Voltammetry and EIS in [Fe (CN)6 ]3-/4- solution and showed the electrochemical behavior of catechol and hydroquinone on the graphene modified glassy carbon electrode. Experiment result shows that the catechol oxidation peak potential is 270 mV and reduction peak potential is 161 mV, and the hydroquinone oxidation peak potential is 145 mV and reduction peak potential is 64 mV on the graphene modified electrode, respectively. The oxidation peak potential distance is about 125 mV and the reduction peak potential distance is about 97 mV of catechol and hydroquinone which are suited for the simultaneous detection. Catechol and hydroquinone have good electrocatalytic activity on modified electrode and the peak currents of differential pulse voltammetry are liner to the catechol and hydroquinone over the range of 5. 0× 10-6 — 1. 0× 10~4 mol/L, respectively, and the graphene modified electrode can simultaneously detect catechol and hydroquinone in the rang of 8. 0× 10-5 — 1. 0 × 10-3 mol/L. The catechol detection limit is 5. 0 × 10-7 mol/L, the hydroquinone detection limit is 1. 0 × 10-7 mol/L. So the graphene modified electrode can be used for analysis the facilitation of actual samples and electrochemical sensors and biosensors.关键词
石墨烯/修饰电极/示差脉冲法/邻苯二酚/对苯二酚Key words
graphenes/ modified electrodes/ differential pulse methods/ catechols/ hydroquinones.分类
化学化工引用本文复制引用
万其进,廖华玲,刘义,魏薇,舒好,杨年俊..石墨烯修饰电极同时测定邻苯二酚和对苯二酚[J].武汉工程大学学报,2013,35(2):16-23,8.基金项目
国家自然科学基金(21075096,21275113) （21075096,21275113）
