碱性介质中(氢)氧化铜修饰电极电催化氧化蔗糖(英文)

作     者：Majid JAFARIAN Mehdi RASHVAND AVEI Iman DANAEE Fereydoon GOBAL Mohammad G.MAHJANI 

作者机构：Department of ChemistryK.N.Toosi University of Technology Abadan Faculty of Petroleum EngineeringPetroleum University of Technology Department of ChemistrySharif University of Technology 

出 版 物：《催化学报》 (催化学报)

年 卷 期：2010年第31卷第11期

页      面：1351-1357页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Supported by K N Toosi University of Technology 

主　　题：saccharose copper(hydr)oxide equivalent circuit electrocatalytic oxidation mechanism 

摘      要：A stable copper(hydr)oxide-modified electrode was prepared in 0.5 mol/L NaOH solution by cyclic voltammetry in the range of -250 to 1 000 *** can be used for electrochemical studies in the range of -250 to 1000 mV without interfering peaks because there is no oxidation of *** an anodic potential sweep,the electro-oxidation of saccharose on Cu occurred by the formation of CuⅢ and this reaction also occurred in the early stages of the reversed cycle until it is stopped by the negative potentials.A mechanism based on the electro-chemical generation of CuⅢ active sites and their subsequent consumption by saccharose was proposed,and the rate law and kinetic parameters were *** charge transfer resistance from theoretical and impedance studies was used to verify the *** chronoamperometry regimes,the reaction followed Cottrellian *** transfer of up to 21 electrons was observed in further investigations of the electro-oxidation of saccharose on a(hydr)oxide Cu rotating disk electrode.