石墨烯中杂原子对镉离子检测性能的影响研究  

Study on the influence of heteroatoms in graphene on the detection performance of cadmium ion

作　　者：金鑫[1] 李惠惠 鲁理平[1] JIN Xin;LI Hui-hui;LU Li-ping(Key Laboratory of Beijing on Regional Air Pollution Control,Beijing University of Technology,Beijing 100124,China;State Key Laboratory of Environmental Simulation and Pollution Control,School of Environment, Beijing Normal University,Beijing 100875,China)

机构地区：[1]区域大气复合污染防治北京市重点实验室,北京工业大学环境科学系,北京100124 [2]环境模拟与污染控制国家重点实验室,北京师范大学环境学院,北京100875

出　　处：《化学研究与应用》2021年第9期1701-1705,共5页Chemical Research and Application

基　　金：国家自然科学基金项目(21876005,21777009)资助。

摘　　要：本文基于氧化石墨烯(GO)、电化学还原氧化石墨烯(ERGO)和氮掺杂石墨烯(NG)三种石墨烯材料修饰的电极制备了镉离子(Cd^(2+))电化学传感器。利用循环伏安法和差分脉冲伏安法分析检测Cd^(2+),系统的比较了不同石墨烯材料修饰电极的电化学性质及检测效果。结果表明GO修饰的传感器在灵敏度、检测限和可重复性方面优于ERGO和NG,说明了石墨烯上含氧基团的存在提高了Cd^(2+)检测的灵敏度。In this study,electrodes were modified respectively by graphene oxide(GO),electrochemical reduced graphene oxide(ERGO)and nitrogen doped graphene(NG)and were used to prepare the electrochemical sensor for Cd^(2+)detection.Cyclic voltammetry and differential pulse voltammetry were used to detect Cd^(2+).The electrochemical properties and detection effects of different graphene materials modified electrodes were compared systematically.The results showed that the GO-modified sensor was superior to the other two sensors in terms of sensitivity,limit of detection and repeatability,and the oxygen-containing groups on graphene improved the sensitivity of Cd^(2+)detection.

关 键 词：石墨烯 电化学传感器 化学修饰电极 镉离子 

分 类 号：O657.1[理学—分析化学]