乙二醇在碳载Pt-TiO_2催化剂上的电催化氧化  

Electrooxidation of ethylene glycol on Pt-TiO_2/C catalysts

作　　者：赵洪波[1,2] 聂春红[2] 高颖[1] 赵东江[2] 邬冰[1] 

机构地区：[1]哈尔滨师范大学化学化工学院,哈尔滨150080 [2]绥化学院制药与化学工程系,绥化152061

出　　处：《黑龙江大学自然科学学报》2010年第6期727-730,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);黑龙江省教育厅科学技术面上项目(11531243);绥化学院杰出青年基金资助项目;绥化学院科技研究资助项目(K093004;KQ1001002);绥化学院科研创新团队资助项目

摘　　要：采用TiO2溶胶法,选用三种不同还原剂(甲酸、甲醛、硼氢化钠)制备了碳载Pt-TiO2催化剂。通过XRD衍射,循环伏安法(CV)和计时电流法(CA)对碳载Pt-TiO2催化剂的结构及其对乙二醇的电氧化特性进行了研究。结果表明不同还原剂制备的催化剂中,TiO2的结晶度不同,Pt的粒径不同,对乙二醇的电催化氧化的催化活性也不同。其中用甲酸还原所制得的碳载Pt-TiO2催化剂对乙二醇的电催化氧化活性分别是采用甲醛或硼氢化钠方法的1.41倍和1.64倍。Carbon supported Pt-TiO2 catalysts were prepared by colloid method on three different reductants.The home-made Pt-TiO2/C catalysts were used for ethylene glycol oxidation in acidic solution.The catalysts prepared have been characterized by powder X-ray diffraction（XRD）,cyclic voltammetry（CV）,linear sweep voltammetry（LSV） and amperometric I-T techniques.It was found that different reductants affected the particle size,the distribution of Pt on carbon support,and therefore the electrocatalytic oxidation activity for ethylene glycol.The catalyst was prepared with HCOOH as reductant has smaller particle size,more homogeneous distribution of Pt in carbon and the highest electrocatalytic oxidation activity for ethylene glycol among the catalysts prepared.Its electrocatalytic activity is 1.41 times and 1.64 times higher than that the catalysts prepared with HCHO and NaBH4 as reductant alone,respectively.

关 键 词：乙二醇 甲酸 电催化氧化 

分 类 号：O646[理学—物理化学]