金属钴卟啉负载炭黑在碱性介质中的性质研究  

Study on Oxygen Reducing Property of MnO_x-CoTMPP/BP Catalyst in Alkaline Solution

作　　者：麻晓霞[1] 刘春宁[1] 马玉龙[1] 马紫峰[2] 

机构地区：[1]宁夏大学大学化学化工学院,宁夏银川750021 [2]上海交通大学化工系,上海200240

出　　处：《化学世界》2010年第6期330-333,共4页Chemical World

基　　金：宁夏高等学校科研项目资助(ZR0636)

摘　　要：将合成的四甲氧基苯基钴卟啉(CoTMPP)负载于经过双氧水和硝酸预处理且掺杂了MnOx的炭载体上,作为氧还原电催化剂。采用X射线衍射(XRD)、红外透射光谱(IR)、循环伏安曲线(CV)和Koutevky-Levich关系式评价了电催化剂对氧还原反应的电催化性能。结果表明,在碱性介质中,MnOx的掺杂有利于提高催化剂的催化活性,CoTMPP负载于6 mol/L硝酸处理过的炭载体BP 2000上活性较好,同时发现焙烧的最佳温度是900℃。To obtain cathode electrocatalysts for the oxygen reduction, cobalt tetramethoxyphenylporphyrins （CoTMPP） was adsorbed on MnOx-loaded black pearls carbon （MnOx/ BP）, which was pretreated with 6 mol/L HNO3 or 30 wt % H2O2, respectively. The electrocatalytical property of MnOx-CoTMPP/BP for oxygen reduction reaction （ORR） in alkaline solution was investigated by XRD,IR, the rotating disk electrode technique and Koutecky-Levich plots in half cells using 1 mol/L NaOH solution. The results showed that treatment with MnOx improves the activity of catalysts in alkaline solution. The catalytical activity of CoTMPP, which was loaded on BP 2000 pretreated with 6 mol/L HNO3, was relatively higher, and the best heat-treatment temperature was 900℃.

关 键 词：金属卟啉 电催化剂 氧还原 炭载体 循环伏安 

分 类 号：O643.36[理学—物理化学]