枝晶状纳米铜修饰激光诱导石墨烯电化学传感器的制备及其在葡萄糖检测中的应用  

Sensitive Non-Enzymatic Glucose Electrochemical Sensor Based on Dendrite Copper Modified Laser-Induced Graphene Electrodes

作　　者：梅正方 姚梦婷 陈荣生 胡成国[2] MEI Zhengfang;YAO Mengting;CHEN Rongsheng;HU Chengguo(School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081;College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072)

机构地区：[1]武汉科技大学化学与化工学院,湖北武汉430081 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《分析科学学报》2021年第4期522-528,共7页Journal of Analytical Science

基　　金：国家重点研发计划(No.2020YFC1909702)。

摘　　要：本文以柔性聚酰亚胺(PI)薄膜为原料,采用激光雕刻方法构筑激光诱导石墨烯(LIG)三电极阵列。以此为基底,通过电沉积方法制备Ag/AgCl参比电极和枝晶状纳米Cu修饰工作电极,用于构建柔性非酶型葡萄糖电化学传感器。在0.1 mol/L NaOH和0.1 mol/L KCl的混合溶液中,施加0.5 V检测电位,其检测葡萄糖的灵敏度为1554.5μA/(mmol/L·cm2),线性范围为0.5~365.5μmol/L,检测限(S/N=3)为0.098μmol/L。该柔性传感器具有良好的重现性,其相对标准偏差(RSD,n=10)为2.96%;同时对多巴胺、抗坏血酸、尿酸、5-羟色胺和组胺等物质具有良好的抗干扰能力。Flexible polyimide(PI)film was transformed into laser-induced graphene(LIG)as the substate to prepare glucose sensor in this paper.Free-standing Ag/AgCl/LIG and dendritic Cu/LIG prepared on LIG by electrochemical deposition were employed as the reference electrode and working electrode respectively for glucose determination.In a mixed solution of 0.1 mol/L NaOH and 0.1 mol/L KCl at an applied potential of 0.5 V,the constructed glucose sensor exhibits a high sensitivity of 1554.5μA/(mmol/L·cm2),a wide linear range of 0.5-365.5μmol/L and a low detection limit of 0.098μmol/L(S/N=3).The flexible sensor also possesses excellent reproducibility for glucose detection,with a relative standard deviation(RSD,n=10)of 2.96%.The sensor shows minimal responses to the interference species such as dopamine,ascorbic acid,uric acid,serotonin and histamine.

关 键 词：激光诱导石墨烯 电化学沉积 柔性无酶葡萄糖传感器 

分 类 号：O657.1[理学—分析化学]