铂-金纳米粒子/半胱氨酸修饰玻碳电极的制备及电化学性质研究  

Preparation of gold-platinum bimetallic nanoparticles/cysteamine modified glassy carbon electrode and its electrochemistry properties

作　　者：陈志兵[1,2] 吴晴晴 乔石 王磊 

机构地区：[1]威海海洋职业学院食品工程系,荣成264300 [2]宿州学院化学化工学院,宿州234000

出　　处：《分析试验室》2015年第10期1132-1134,共3页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金项目(21271136);安徽省教育厅重点项目(KJ2012A267);宿州学院科研平台开放课题(2012YKF01);威海海洋职业学院科研课题(WHZKY2015-08)资助

摘　　要：利用电沉积法制备了Au-Pt/Cys/GC修饰电极,采用场发射扫描电镜对制备的修饰电极进行了表征。采用循环伏安法(CV)对修饰电极电化学性质进行了研究,考察了电沉积时间和电位对修饰电极制备的影响,探讨了修饰电极对甲酸氧化的电催化作用。实验结果表明,Au-Pt/Cys/GCE较其它电极的电位差增大,峰电流增强,对甲酸氧化具有良好的电化学催化能力。此外,该修饰电极具有良好的稳定性和重现性,可望用于实际样品中甲酸的测定。This paper describes an effective route to synthesize gold-platinum bimetallic（ Au-Pt） by a controllable electrodeposition method induced by a self-assembled cysteamine（ Cys） monolayer on the surface of a glass carbon electrode（ GCE）. The Au-Pt / Cys / GCE electrodes were characterized by field emission scanning electron microscopy（ FE-SEM） and investigated by cyclic voltammetry（ CV）. The morphologies of bimetallic depended on the electrodeposition time and potential. The results showed that Au-Pt / Cys / GCE electrode which could increase the difference between the oxidative peak potentials and enhance peak current compared to other electrodes,implying its excellent electrocatalytic activity for the oxidation of formic acid. Moreover,the electrode showed high stability and good reproducibility,holding a great promise in the analysis of formic acid in real samples.

关 键 词：Au-Pt/Cys/GC电极 电沉积 循环伏安法 

分 类 号：O657.13[理学—分析化学]