后处理温度对Pt-TiO_2/C催化剂电催化性能的影响  

Effect of post treatment temperature on electrocatalytic performance of Pt-TiO_2/C catalyst

作　　者：邬冰[1] 高颖[2] 姜兆华[1] 

机构地区：[1]哈尔滨工业大学理学院,哈尔滨150001 [2]哈尔滨师范大学化学化工学院,哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2008年第4期421-424,共4页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(20573029);黑龙江省自然科学基金资助项目(B200505);哈尔滨市科技创新人才研究专项资金资助(2007RFQXG059)

摘　　要：采用TiO2溶胶法,在不同后处理温度下制备了碳载Pt-TiO2(Pt-TiO2/C)催化剂。运用循环伏安法、线性扫描法和计时电流法等手段研究了催化剂对甲醇电催化氧化性能。结果表明Pt-TiO2/C催化剂对甲醇在酸性溶液中的电催化氧化活性受催化剂制备的后处理温度影响。后处理温度为80℃时催化剂对甲醇的电催化氧化活性分别是未处理、200℃和300℃后处理温度时的1.77倍、1.37倍和3.30倍。Carbon supported Pt -TiO2 catalysts were prepared by colloid and chemical reduction method at different post treatment temperatures. The electrocatalytic performances for methanol oxidation on Pt - TiO/C catalysts were investigated by Cyclic Voltammetry （ CV）, Linear Sweep Voltammetry （LSV） and Amperometric I - t curves （CA） techniques. The results showed that the electrocatalytic activity for methanol oxidation influenced by post treated temperature. The electrocatalytic activity for the catalyst treated at 80℃ is 1.77 times, 1.37 times and 3.30 times higher than that for the catalysts untreated, treated at 200℃ and 300℃, respectively.

关 键 词：直接甲醇燃料电池 PT TIO2 电催化氧化 

分 类 号：O646[理学—物理化学]