碳载金铂双金属催化剂催化活性研究  

Catalytic Property of Carbon-supported Au-Pt Bimetallic Catalysts

作　　者：温河丽[1] 张正富[1] 董颖男[2] 唐春[2] 杨喜昆[1] 

机构地区：[1]昆明理工大学分析测试研究中心,昆明650093 [2]昆明贵金属研究所,稀贵金属综合利用新技术国家重点实验室,昆明650106

出　　处：《贵金属》2011年第1期56-59,共4页Precious Metals

基　　金：国家自然科学基金(20863003);云南省中青年学术技术带头人后备人才培养项目(2007PY01-9)

摘　　要：采用KBH4做还原剂、PVP做保护剂,化学法一步合成Au-Pt合金纳米粒子,应用UV-Vis、TEM、XRD等手段对其进行了表征。将所合成的合金纳米粒子负载在碳黑上,获得Au-Pt双金属碳载催化剂,应用循环伏安法(CV)检测了催化剂对甲醇的电催化氧化活性。研究表明,Au-Pt/C催化剂的催化活性明显高于Pt/C的,说明Au与Pt具有明显的协同作用,同时发现其催化活性与Au、Pt摩尔比有关。Au-Pt alloy nanoparticles were synthesized by chemical co-reduction method,KBH4 as reducing agent and PVP as protecting agent.Nanoparticles were characterized by UV-vis,TEM and XRD.Electrocatalytic activity of Au-Pt/C alloy catalysts toward methanol oxidation was studied by cyclic voltammetry（CV）.It was found that the catalytic activity of Au-Pt/C catalysts toward methanol is significantly higher than that of Pt/C catalyst,which is related to the molar ratio of Au and Pt.

关 键 词：燃料电池 Au-Pt双金属 合金 催化 甲醇 

分 类 号：TG146.36[一般工业技术—材料科学与工程]