柠檬酸根辅助电沉积制备铂纳米粒子及其制备条件的优化  

Optimization the condition of electrochemical deposition platinum nanocatalyst assisted with citric acid root

作　　者：金碧瑶[1] 赵莲花[1] 

机构地区：[1]延边大学理学院化学系,吉林延边133002

出　　处：《延边大学学报（自然科学版）》2012年第3期216-220,共5页Journal of Yanbian University（Natural Science Edition）

基　　金：吉林省科技发展计划项目(20120741)

摘　　要：以氧化铟锡(ITO)透明导电玻璃为基体,在柠檬酸根存在下,采用恒电位电化学沉积法制备铂纳米粒子,并通过改变施加电位、柠檬酸钠浓度、前驱体浓度和电解质浓度来优化铂纳米粒子的制备条件.利用X射线衍射(XRD)表征在ITO表面沉积的Pt颗粒的晶相结构,并运用循环伏安法(CV)测定Pt/ITO电极在酸性介质中的电催化氧化性能.实验结果表明,在施加电位为-0.3V、H2PtCl6浓度为0.8mmol/L、柠檬酸钠浓度为20mmol/L和电解质HClO4浓度为0.1mol/L的条件下,制备出的铂纳米粒子的电催化性能较好.An indium tin oxide（ITO） electrode is used as the substrate for supporting Pt particles prepared by potentiostatic method with citric acid root.By changing the applied potential,citric acid sodium concentration,precursor concentration and electrolyte concentration to optimize platinum nanoparticles preparation conditions.Using X-ray diffraction（XRD） to represent the crystal phase structure of Pt particle deposited on the ITO,using cycle volt ampere（CV） to determine the electric catalytic oxidation performance of Pt/ITO electrode in acid medium.The experimental results show that the preparation conditions of better electrocatalytic performance of the platinum nanoparticles is the applied potential of-0.3V,H2PtCl6 concentration is 0.8 mmol/L,citric acid sodium concentration is 20 mmol/L and electrolyte HClO4 concentration is 0.1 mol/L.

关 键 词：电化学沉积 铂 ITO玻璃 柠檬酸钠 

分 类 号：O643.36[理学—物理化学]