Influence of Surface Structure of Platinum Electrodes on Electrooxidation of CO  

作　　者：XIA Xing-hua ZHANG Dai SONG Yan-yan 

机构地区：[1]State Key Laboratory of Coordination Chemistry,Institute of Analytical Science,Nanjing Univeristy,Nanjing 210093,P.R.China

出　　处：《Chemical Research in Chinese Universities》2003年第4期474-480,共7页高等学校化学研究(英文版)

基　　金：Supported by the National Natural Science Foundation of China( No.2 0 12 5 5 15,2 0 2 990 30 ) and the Starting Fund fromthe Ministry of Education of China

摘　　要：The oxidation of CO on platinum electrodes in an acid solution was studied with the conventional electrochemical methods and the on-line electrochemical mass spectroscopy. It was found that this reaction is strongly determined by the surface morphology of platinum. The pretreatment of platinum electrodes can change the surface properties dramatically, in consequence it can improve the electrocatalytic activity towards the electrooxidation of CO. The existence of surface active sites on the roughened platinum electrodes can be used to explain its high electrocatalysis towards the oxidation of CO.The oxidation of CO on platinum electrodes in an acid solution was studied with the conventional electrochemical methods and the on-line electrochemical mass spectroscopy. It was found that this reaction is strongly determined by the surface morphology of platinum. The pretreatment of platinum electrodes can change the surface properties dramatically, in consequence it can improve the electrocatalytic activity towards the electrooxidation of CO. The existence of surface active sites on the roughened platinum electrodes can be used to explain its high electrocatalysis towards the oxidation of CO.

关 键 词：ELECTROCATALYSIS PLATINUM Surface property MECHANISM 

分 类 号：O646[理学—物理化学]