Au-Pt双金属纳米粒子的制备及其电催化性质  

Preparation and Electrocatalysis Properties of Gold-Platinum Bimetallic Nanoparticles

作　　者：李中春[1,2] 刘燕[2] 尚通明[1,2] 周全法[1,2] 

机构地区：[1]江苏省贵金属深加工技术及其应用重点建设实验室,江苏常州213001 [2]江苏技术师范学院,江苏常州213001

出　　处：《稀有金属材料与工程》2011年第2期343-346,共4页Rare Metal Materials and Engineering

基　　金：江苏省普通高校自然科学研究计划(08KJB150007);江苏省贵金属深加工技术及其应用重点建设实验室开放研究课题基金(SYGK0712);江苏技术师范学院青年基金(KYZ08023);江苏省高校自然科学重大基础研究(06KJA61019)资助

摘　　要：在PEG10000/Vc/HAuCl4体系中,用Vc还原HAuCl4制备金纳米粒子,以所制备的金纳米粒子为晶种,通过控制HAuCl4与H2PtCl6的质量比,制备不同Pt/Au比的双金属纳米粒子,并进一步研究其对H2O2电化学氧化的催化作用。紫外-可见光谱(Uv-vis)、透射电子显微镜(TEM)、选区电子衍射(SAED)、X射线粉末衍射(XRD)等实验结果表明:Au-Pt双金属纳米粒子为面心立方结构的合金。用循环伏安法对Au-Pt双金属纳米粒子修饰的玻碳电极的电化学性能进行测试,结果表明:Au-Pt双金属纳米粒子对H2O2电化学氧化有一定的催化作用。催化效率随Au-Pt双金属粒子中Pt含量的增加而增加。Gold nanoparticles were prepared in PEG10000/Vc/HAuCl4 system with Vc as the reducing agent.Then gold-platinum bimetallic nanoparticles with different Pt/Au ratio were formed using a simple gold seed-mediated growth method by controlling the mass ratio of HAuCl4/H2PtCl6.Their electrocatalysis effects on H2O2 electrochemical oxidation were studied.Results of Uv-visible spectra（Uv-vis）,transmission electronic microscopy（TEM）,X-ray diffraction（XRD） and selected area electron diffraction（SAED） show that Au-Pt bimetallic nanoparticles are of face-centered cubic structure.The electrochemical performance of Au-Pt/glassy carbon（GC） electrode was investigated by cyclic voltammetry method.The result indicates that the Au-Pt/GC electrode has good electrocatalytic activity for H2O2 oxidation.The catalytic efficiency is increased with more Pt content in Au-Pt alloys.

关 键 词：双金属 纳米粒子 合成 

分 类 号：TB383.1[一般工业技术—材料科学与工程]