羧基化石墨烯单层自组装膜的制备及其对扑热息痛的电化学检测  

Preparation of Carboxyl Functionalized Graphene Self-Assembled Monolayer and Its Electrochemical Determination of Paracetamol

作　　者：李玉辉[1] 江莹莹[1] 莫韬[1] 郭清标 李艳彩[1] 

机构地区：[1]闽南师范大学化学与环境学院,福建漳州363000

出　　处：《湖北民族学院学报（自然科学版）》2016年第1期68-73,共6页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：闽南师范大学新世纪优秀人才计划(MX-14003);福建省研究生创新基金项目

摘　　要：基于羧基化石墨烯优异的导电性,大的比表面积和较高的含氧基团,将其通过乙二胺共价自组装到玻碳电极表面形成单层膜修饰电极利用共价自组装的方法制备羧基化石墨烯修饰电极可保持石墨烯的特殊结构和性能并能够在电极表面形成较稳定的薄膜利用扫描电镜（SEM）、傅里叶变换红外光谱（FT-IR）和原子力显微镜（AFM）对该薄膜的形貌和结构进行表征并通过电化学阻抗谱（EIS）、循环伏安（CV）和微分脉冲伏安（DPV）表征该修饰电极的电化学性能,实验结果显示羧基化石墨烯修饰电极对扑热息痛具有优良的电催化性能,在1~400μmol/L浓度范围内呈良好的线性关系,检测限为0.126μmol/L（S/N=3）,该修饰电极还成功用于扑热息痛片实际样品的快速检测此外,该羧基化石墨烯修饰电极对扑热息痛的检测具有良好的选择性和稳定性.Carboxyl functionalized graphene（CFG）self-assembled monolayers（SAMs）were prepared on the carboxylated glassy carbon electrode based on covalent interaction.The morphology and structure of the film were characterized by scanning electron microscope（SEM）,Fourier transform infrared（FT-IR） and atomic force microscopy（AFM）.The electrochemical and electrocatalytic property of the CFG modi-fied electrode was explored carefully by electrochemical impedance spectroscopy（EIS）,cyclic voltamme-try（CV）and differential pulse voltammetry（DPV）.The modified electrode presents favorable electro-chemical performance and possesses good electrocatalytic activity for paracetamol.Under optimal condi-tions,the CFG modified electrode displays a linear range from 1 to 400 μmol/ L and a detection limit of 0.13 μmol/ L（S / N= 3）to paracetamol.And it was successfully applied to the actual of paracetamol sam-ple.Moreover,it also displays good selectivity and stability.

关 键 词：羧基化石墨烯 共价自组装 电催化 扑热息痛 

分 类 号：O657.1[理学—分析化学]