典型表面活性剂在玻碳电极上的电化学行为及吸附模式  

Electrochemical behaviors and adsorption modes of typical surfactants on glassy carbon electrode

作　　者：杨志[1] 田森林[1] 李英杰[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650093

出　　处：《化学研究与应用》2010年第12期1583-1586,共4页Chemical Research and Application

基　　金：国家自然科学基金项目(20607008)资助;云南省教育厅科学研究基金项目(07Y11138)资助

摘　　要：Electrochemical behaviors of Tween40,Tween80,CTAB and SDS were investigated by cyclic voltammetry using glassy carbon electrode.The results show that the anodic peak current(Ipa) shows a positive change with the increasing concentration and changes abruptly in the vicinity of the critical micellar concentration(CMC) of the surfactants;the adsorption modes of nonionic surfactants Tween40 and Tween80 accord with sigmoid adsorptionisotherm,the adsorption modes of the ionic surfactants CTAB and SDS accord with SL-shape adsorptionisotherm.Electrochemical behaviors of Tween40,Tween80,CTAB and SDS were investigated by cyclic voltammetry using glassy carbon electrode.The results show that the anodic peak current（Ipa） shows a positive change with the increasing concentration and changes abruptly in the vicinity of the critical micellar concentration（CMC） of the surfactants;the adsorption modes of nonionic surfactants Tween40 and Tween80 accord with sigmoid adsorptionisotherm,the adsorption modes of the ionic surfactants CTAB and SDS accord with SL-shape adsorptionisotherm.

关 键 词：表面活性剂 循环伏安法 玻碳电极 电化学行为 吸附模式 

分 类 号：O657.1[理学—分析化学]