GN/CS/GCE电化学传感器用于铅离子检测研究  

Research of GN/CS/GCE electrochemical sensor for the detection of Pb(Ⅱ)

作　　者：陈艳红 刘玲利 李文婷 刘刚 徐胜[1] 王振希[1] 戴欣[1] 易洁 CHEN Yanhong;LIU Lingli;LI Wenting;LIU Gang;XU Sheng;WANG Zhenxi;DAI Xin;YI Jie(School of Sciences,Nanchang Institute of Technology,Nanchang 330099,China)

机构地区：[1]南昌工程学院理学院,江西南昌330099

出　　处：《南昌工程学院学报》2023年第1期95-101,共7页Journal of Nanchang Institute of Technology

基　　金：江西省教育厅科学技术研究项目(GJJ190983);江西省重点研发项目(20202BBFL63022);江西省科学技术重大专项(20203ABC28W016);江西省自然科学基金资助项目(20224BAB203024);江西省林业局樟树研究专项子课题(20200504);南昌工程学院大学生科研训练计划项目(2021038)。

摘　　要：利用超声分散将石墨烯(GN)与壳聚糖(CS)原位复合制备了石墨烯/壳聚糖(GN/CS)复合材料,并将其修饰于玻碳电极(GCE)表面制备了一种石墨烯/壳聚糖/玻碳(GN/CS/GCE)电化学传感器。循环伏安曲线(CV)、阻抗(EIS)和电位阶跃计时库仑(CC)分析表明其具有良好的电化学响应,利用差分脉冲阳极溶出伏安法(DPASV)对含铅溶液分析表明其对Pb(II)具有良好的检测效果。分析结果同时表明,随着修饰电极上石墨烯和壳聚糖的比值增加,其对Pb(II)的检测效果越好,当石墨烯为200wt%时检测效果最佳。In this paper, graphene/chitosan(GN/CS)composites were prepared by in-situ composite of graphene(GN)and chitosan(CS)under ultrasonic condition, and modified on the surface of bare glassy carbon electrode(GCE)to prepare a graphene/chitosan/glassy carbon(GN/CS/GCE)electrochemical sensor.The results of Cyclic Voltammetry(CV),Electrochemical Impedance Spectroscopy(EIS),Chronocoulometry(CC)and Differential Pulse Anodic Stripping Voltammetry(DPASV)show that the GN/CS/GCE electrochemical sensor has a good electrochemical response and detection effect on Pb(Ⅱ).The results also show that the detection effect of Pb(Ⅱ)is improved with the increase of graphene content, and the detection effect is the best when graphene is 200wt%.

关 键 词：电化学传感器 石墨烯 壳聚糖 重金属检测 DPASV 

分 类 号：X703.1[环境科学与工程—环境工程]