纳米金/垂直阵列碳纳米管修饰铜电极的制备及其对曲酸的电催化性能研究  

Preparation of Nano-Au Vertical Array Carbon Nanotubes Modified Copper Electrode and Its Electrochemical Behavior Toward Kojic Acid

作　　者：马建春[1] 张军[1] 牛晶晶[1] 王晋枝 刘欢[1] 邵佳慧[1] 

机构地区：[1]吕梁学院化学化工系,吕梁033000

出　　处：《理化检验（化学分册）》2016年第11期1267-1271,共5页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：山西省教学改革项目(J2015120);吕梁学院教学改革项目(JYZD201501)资助

摘　　要：通过磁控溅射法制备了金/垂直阵列碳纳米管纳米复合材料,并利用扫描电镜(SEM)和透射电镜(TEM)方法对复合材料的形貌进行了表征。将此材料用导电银胶粘贴到铜电极表面制备成工作电极对曲酸进行了电催化性能研究,结果表明:在pH 6.0的0.001mol·L^(-1)的乙酸-乙酸钠溶液中,该电极对曲酸具有很好的电催化氧化作用,曲酸浓度在5.0×10-4~7.5×10-3 mol·L^(-1)之间时,与其电催化氧化峰电流值之间呈线性关系。检出限(3S/N)为1.0×10-5 mol·L^(-1)。Nano-composite material of nano-Au/vertical array CNTs was prepared by magneto-sputtering deposition, and its morphology was characterized by SEM and TEM. A modified electrode of nano-Au/VACNTs was prepared by glueing the composite material on the surface of copper electrode with conductive silver gum, and the electrocatalytic behavior of this modified electrode as working electrode toward kojic acid was studied. It was found that in 0. 001 mol·L-1 HOAc-NaOAc buffer solution of pH 6. 0, electrocatalytic oxidation of kojic acid was observed at the electrode, and linear relationship between values of oxidative peak current and concentration of kojic acid was obtained in the range of 5.0 × 10^（-4） -7. 5 × 10^（-3） mol·L-1 with detection limit （3S/N） of 1.0×10^（-5）mol·L-1.

关 键 词：纳米金/垂直阵列碳纳米管修饰铜电极 曲酸 电催化氧化 

分 类 号：O657.1[理学—分析化学]