MnO_2/CNTs电催化剂及其对C—H键的选择性催化活化  

MnO_2 modified CNTs electro-catalyst and its selective electro-oxidation of C—H bond

作　　者：朱英红[1] 李艳芳[1] 朱颖[1] 陈姿颖[1] 张健青[1] 马淳安[1] 

机构地区：[1]浙江工业大学绿色化学合成技术国家重点实验室培育基地,浙江杭州310014

出　　处：《浙江工业大学学报》2015年第2期128-132,共5页Journal of Zhejiang University of Technology

基　　金：国家973重点基础研究发展计划资金资助项目(2012CB722604)

摘　　要：通过化学沉淀法制备了MnO2/CNTs复合电催化剂,采用X-射线衍射(XRD)对其晶型进行了表征.采用循环伏安法(CV)、恒电位电解研究了MnO2/CNTs电催化活化对甲氧基甲苯(pMT)中C—H键的电化学氧化行为,实验结果表明:MnO2和CNTs之间具有良好的催化协同作用.恒电位电解主要氧化产物为对甲氧基苯甲醛(p-MBA).通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)和高分辨透射电子显微镜(HRTEM)对MnO2/CNTs复合材料的形貌和微观结构进行了表征,结果表明:MnO2具有细须状结构.MnO2/CNTs electro-catalyst was prepared through a chemical deposit process, and its phase structure was characterized by X-ray diffraction （XRD）. The electro-catalytic activity of MnO2/CNTs toward C-H bond in p-MT was studied by cyclic voltammetry （CV） and the constant potential electrolysis. It can be seen that MnO2 and CNTs showed a synergistic catalytic activity. The major product in the electro-oxidation process was p-methoxybenzaldehyde （p- MBA）. The morphology and structure of MnO2/CNTs composite were further characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and highresolution transmission electron microscopy （ HRTEM ）, and MnO2 showed nanoscale architectures with fine whiskers.

关 键 词：电催化氧化 MnO2/CNT复合材料 对甲氧基甲苯 对甲氧基苯甲醛 

分 类 号：O646[理学—物理化学]