直接热分解法制备的碳载Pt-Sn催化剂对乙醇氧化的电催化性能  

Electrocatalytic Performance of Carbon Supported Pt-Sn Catalyst Prepared with Direct Thermo-decomposition Method for Ethanol Oxidation

作　　者：马娟[1] 孙瀚君[2] 赵宏[1] 唐亚文[2] 陆天虹[2] 郑军伟[1] 

机构地区：[1]苏州大学化学电源研究所,苏州215006 [2]江苏省新型动力电池重点实验室,江苏省生物功能材料重点实验室,南京师范大学化学与材料学院,南京210097

出　　处：《高等学校化学学报》2011年第12期2856-2860,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20873065,21073094);江苏高校优势学科建设工程项目资助

摘　　要：以Pt(NO3)2和SnO为前驱体采用直接热分解法制备了碳载Pt-Sn(Pt-Sn/C)催化剂.用X射线衍射(XRD)、透射电镜(TEM)和X射线光电子能谱(XPS)等技术对催化剂进行了表征,用循环伏安法和CO溶出等方法研究了催化剂对乙醇氧化的电催化性能.结果表明,Pt-Sn/C催化剂中的Pt-Sn粒子具有Pt-Sn合金粒子外壳和SnOx粒子为核的核壳结构,对乙醇氧化的电催化性能优于商业化的碳载Pt(Pt/C)催化剂.The Pt-Sn/C catalyst was synthesized with the direct Thermo-decomposition method using Pt（NO3）2 and SnO as the precusors.The Pt-Sn/C catalyst was characteristed with X-ray diffraction（XRD）,transmission electron microscopy（TEM） and X-photoelectron spectroscopy（XPS）.The electrocatalytic performance of the Pt-Sn/C catalyst was investigated with the cyclic voltammetry.It was found that the Pt-Sn particles in the Pt-Sn/C catalyst prepared with this method possesses the shell-core structure with the Pt-Sn alloy particles as the shell and the SnOx particles as the core.The electrocatalytic performance of the Pt-Sn/C catalyst for the ethanol oxidation is better than that of the Pt/C catalyst.This preparetion method does not indroduce Cl-.Thus,the prepared catalyst needn＇t wash and does not induce the environmental pollution.In addition,this preparation method is suitable for the production with the large scale.Therefore,this preparation method is suitable for the practical application.

关 键 词：氧化亚锡 核壳结构 碳载铂锡催化剂 直接乙醇燃料电池 

分 类 号：O646[理学—物理化学]