用电化学阻抗谱法研究支撑液膜的不稳定性  

Study on the instability of supported liquid membrane by electrochemical impedance spectroscopy

作　　者：郑辉东[1,2] 吴燕翔[2] 薛杭燕[2] 任其龙[1] 

机构地区：[1]浙江大学二次资源化工国家专业实验室,杭州310027 [2]福州大学化学化工学院,福州350002

出　　处：《膜科学与技术》2009年第4期76-79,共4页Membrane Science and Technology

基　　金：国家自然科学基金资助项目(20576059)

摘　　要：采用电化学阻抗法研究支撑液膜膜液的流失行为,并采用等效电路法分析得到的交流阻抗图谱.结果表明,等效电路Rs(RmCm)Q能够较好表征支撑液膜体系的交流电特性,得到的支撑液膜层的电阻和电容值能反映膜液层的特性,电阻值和电容值的变化能直观地反应膜液流失的行为.因而,该方法能很好地用于支撑液膜不稳定性的研究.The losing behavior of liquid in supported liquid membranes （SLMs） was studied by electrochemical impedance spectroscopy （EIS） method in this paper. The obtained spectrums were analyzed by equivalent circuit method. Results show that the equivalent circuit of Rs（RmCm）Q can describe the AC characteristic of the SLM system, the resistance and capacity value of the supported membrane layer can reflect the properties of liquid in the SLM and the change of those values can directly indicate the losing behavior of liquid in the SLM. Therefore this method is a good way to study the instability of SLM.

关 键 词：电化学阻抗法 支撑液膜 不稳定性 

分 类 号：TB383.2[一般工业技术—材料科学与工程]