碳包铜纳米粒子在葡萄糖检测中的应用  

The application of carbon encapsulated copper nanoparticles for determination of glucose

作　　者：孟小鹏[1] 姚亚东[1] 尹光福[1] 宫祎超[1] 邹昌武[1] 黄忠兵[1] 廖晓明[1] 陈显春[1] 

机构地区：[1]四川大学材料科学与工程学院,成都610065

出　　处：《四川大学学报（自然科学版）》2013年第3期595-600,共6页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省科技厅科技支撑项目(2011gz0110)

摘　　要：采用回流法制得前驱体粉体,用此前驱体粉体在流动氩气保护下、600℃下热处理10h制得碳包铜纳米粒子.利用XRD、Raman、SEM、TEM和HRTEM对碳包铜纳米粒子进行了表征.结果表明:所得碳包铜纳米粒子大小分布均匀,具有典型的核壳状结构,内核为金属铜,外壳为无定形碳,碳包铜纳米粒子的粒径为40～50nm,碳包覆层厚度为3～5nm.利用循环伏安法比较了铜纳米粒子修饰的玻碳电极和碳包铜纳米粒子修饰的玻碳电极对葡萄糖的电催化氧化活性.结果表明:碳包铜纳米粒子修饰的玻碳电极对葡萄糖有显著的电催化氧化活性,且峰电流与葡萄糖浓度呈良好的线性关系(相关系数R=0.97),有望用于葡萄糖的检测.Precursor powder was prepared by refluxing method. Then, heat treatment of the precursor powder at 600 ℃ under flowing argon for 10 hours yielded carbon encapsulated copper nanoparticles （CECNPs）. The as-prepared CECNPs were characterized by XRD, Raman, SEM, TEM and HRTEM. The results indicate that the as-prepared CECNPs exhibit uniform size distribution and obvious coreshell structure, with copper as core and amorphous carbon as shell. The size of the carbon encapsulated copper nanoparticles is 40-50 nm and the thickness of the shell is 3-5 nm. Electric catalytic oxidation activities to glucose of copper nanoparticles modified glassy carbon electrode and the as-prepared CECNPs modified glassy carbon electrode were compared by cyclic voltammetry. The results show that the as-prepared CECNPs modified glassy carbon electrode has significant catalytic activity to glucose and a good linear relationship is presented betweent the peak currents and the concentrations （R=0.97） of glucose, which is expected to be used for glucose detection.

关 键 词：碳包铜纳米粒子 回流法 循环伏安法 葡萄糖 

分 类 号：TB383[一般工业技术—材料科学与工程] TF123[冶金工程—粉末冶金]