Pt-ZnO/C复合材料的合成及对醇类催化活性的研究  

Synthesis of Pt-ZnO/C composites and their catalytic activity for alcohols oxidation

作　　者：赵红晓[1] 王淑敏[2] 薛登启[2] 陈艳娟[2] 

机构地区：[1]许昌学院表面微纳米材料研究所,河南许昌461000 [2]许昌学院化学化工学院,河南许昌461000

出　　处：《燃料化学学报》2011年第2期140-143,共4页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(20873118);河南省教育厅科研项目(2008B150019)

摘　　要：采用溶胶-凝胶法制备了ZnO微米颗粒,电沉积Pt合成了Pt-ZnO/C复合材料。利用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对产物的晶型和形貌进行了表征,并利用循环伏安法(CV)研究了所得复合材料对甲醇和乙醇的电催化活性。实验结果表明,该催化剂在ZnO的质量分数为50%时对甲醇和乙醇氧化的电催化活性最好。ZnO micro particles were prepared by a sol-gel method.Pt-ZnO/C were obtained by electrodepositing Pt.The crystallinity,composition and morphology of the as-prepared powders were characterized by X-ray diffraction（XRD） and scanning electron microscope（SEM）.The electrocatalytic activity towards methanol and ethanol oxidation of such micro-composites on a kryptol substrate was investigated in acid electrolyte at room temperature using cyclic voltammetry（CV）.The results show that the best catalytic activity of composite catalyst for methanol and ethanol oxidation is obtained when the content of ZnO is 50%.

关 键 词：直接醇类燃料电池 醇类氧化 阳极催化剂 Pt-ZnO/C复合材料 

分 类 号：TM911.4[电气工程—电力电子与电力传动]