无金属可见光诱导原子转移自由基聚合法制备聚丙烯酰胺@氧化石墨烯/纳米钯复合物修饰电极及其对乙醇的检测  

Preparation of Au/Polyacrylamide@Graphene Oxide/Nano-palladium Electrode via Metal-Free Visible-Light-Induced Atom Transfer Radical Polymerization and Its Detection of Ethanol

作　　者：王伟 李娟[1] 白茹 韩珍 冯雪薇 孙越[1] WANG Wei;LI Juan;BAI Ru;HAN Zhen;FENG Xuewei;SUN Yue(College of Chemistry and Chemical Engineering,Liaoning Normal University,Dalian,Liaoning 116029,China)

机构地区：[1]辽宁师范大学化学化工学院,辽宁大连116029

出　　处：《应用化学》2020年第5期595-603,共9页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21304041);大连市高层次人才创新支持项目(2016RQ047);辽宁省教育厅科研项目(LQ2019022);辽宁师范大学大学生创新训练计划(201910165215)资助。

摘　　要：在金电极表面,用无金属可见光诱导原子转移自由基聚合(MVL ATRP)的方法制备聚丙烯酰胺@氧化石墨烯/纳米钯复合物修饰电极(Au/PAM@GO/Pd)。采用电化学循环伏安法(CV)、交流阻抗法(EIS)、扫描电子显微镜(SEM)、能量色散X射线光谱法(EDS)对Au/PAM@GO/Pd电极进行表征,结果表明在金电极表面成功制备了复合物。利用Au/PAM@GO/Pd电极作为电化学传感器,该传感器能成功地检测溶液中的乙醇。在最佳条件下,利用差分脉冲伏安法(DPV)该传感器检测乙醇的线性范围为1.0×10-8~1.0 mol/L,检出限(S/N=3)为1.3×10-9 mol/L,线性相关系数为0.996。Polyacrylamide@graphene oxide/nano-palladium composite was prepared on the surface of gold electrode(Au/PAM@GO/Pd)by metal-free visible light-induced atom transfer radical polymerization(MVL ATRP).The Au/PAM@GO/Pd electrode was characterized by cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS),scanning electron microscopy(SEM)and energy dispersive X-ray spectroscopy(EDS).The results show that the composite is successfully prepared on the surface of the gold electrode.The Au/PAM@GO/Pd electrode could be used as an electrochemical sensor to detect ethanol by differential pulse voltammetry(DPV).Under the optimal conditions,the linear range is 1.0×10-8~1.0 mol/L,and the detection limit(S/N=3)is 1.3×10-9 mol/L,with a coefficient of 0.996.

关 键 词：原子转移自由基聚合 氧化石墨烯 纳米钯 传感器 

分 类 号：O657.1[理学—分析化学]