PtSn/MWCNTs纳米催化剂的制备及其对甲醇的电催化氧化  

Preparation and Electrocatalytic Properties of PtSn/MWCNTs Nanocatalyst for Methanol Electro-oxidation

作　　者：孙景玉[1] 张校刚[2] 

机构地区：[1]新疆大学应用化学研究所,新疆维吾尔自治区乌鲁木齐市830046 [2]南京航空航天大学材料科学与技术学院,江苏省南京市210016

出　　处：《曲阜师范大学学报（自然科学版）》2007年第4期73-76,共4页Journal of Qufu Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(20403014)

摘　　要：以乙二醇和甲酸钠为还原剂,用间歇式微波加热法快速制备了担载在多壁碳纳米管上的直接甲醇燃料电池阳极催化剂PtSn/MWCNTs.透射电镜(TEM)和X-射线衍射(XRD)测试结果表明,PtSn粒子在MWCNTs上高度分散,平均粒径约为3.2 nm.循环伏安和计时电流实验表明,PtSn/MWCNTs电催化剂较之Pt/MWCNTs有更好的对甲醇氧化催化活性和更强的抗毒化能力.PtSn nanoparticles are loaded on multiwalled carbon nanotubes with ethylene glycol and sodium formate using interval microwave heating method. TEM image and XRD patterns reveal that the PtSn/ MWCNTs electrocatalyst exhibite the homogeneous dispersion on MWCNTs, and the mean particles size is about 3. 2 nm. The cyclic voltammetry and chronoamperometry measurements indicate that the PtSn/ MWCNTs present the higher electrocatalytic activity and better tolerance to poisoning species for methanol oxidation than that of Pt/MWCNTs catalyst.

关 键 词：直接甲醇燃料电池 PtSn/MWCNTs 电催化剂 

分 类 号：O646[理学—物理化学]