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[1]王 帅,尹 成,周伟琪,等.分离膜孔结构的电化学交流阻抗谱表征[J].武汉工程大学学报,2017,39(05):466-470.[doi:10. 3969/j. issn. 1674?2869. 2017. 05. 011]
 WANG Shuai,YIN Cheng,ZHOU Weiqi,et al.Characterization of Pore Structure in Separation Membrane by Electrochemical Impedance Spectroscopy[J].Journal of Wuhan Institute of Technology,2017,39(05):466-470.[doi:10. 3969/j. issn. 1674?2869. 2017. 05. 011]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
39
期数:
2017年05期
页码:
466-470
栏目:
材料科学与工程
出版日期:
2017-12-19

文章信息/Info

Title:
Characterization of Pore Structure in Separation Membrane by Electrochemical Impedance Spectroscopy
文章编号:
20170511
作者:
王 帅1尹 成1周伟琪1林志东1付 萍1陈 喆1* 张 勇1吴江渝1海吉忠2杨小波2刘海平2
1. 等离子体化学与新材料湖北省重点实验室(武汉工程大学),湖北 武汉 430205; 2. 青海盐湖工业股份有限公司,青海盐湖资源综合利用重点实验室,青海 格尔木 816000
Author(s):
WANG Shuai1 YIN Cheng1 ZHOU Weiqi1 LIN Zhidong1 FU Ping1 CHEN Zhe1* ZHANG Yong1 WU Jiangyu1 HAI Jizhong2 YANG Xiaobo2 LIU Haiping2
1. Hubei Key Laboratory of Plasma Chemistry and Advanced Materials (Wuhan Institute of Technology), Wuhan 430205, China; 2. Key Laboratory of Salt Lake Resources Integrated Utilization of Qinghai, Qinghai Salt Lake Industry Co., LTD, Golmud 816000,China
关键词:
分离膜孔结构电化学交流阻抗谱水通量
Keywords:
separation membrane pore structure electrochemical impedance spectroscopy water flux
分类号:
TB34
DOI:
10. 3969/j. issn. 1674?2869. 2017. 05. 011
文献标志码:
A
摘要:
利用电化学工作站的电化学交流阻抗谱构建一种测量分离膜通孔结构的电化学表征技术. 通过改变聚乙烯吡咯烷酮的质量分数,制备具有不同孔洞结构的聚砜分离膜. 采用电化学工作站、孔容积分析仪、膜性能测试装置对分离膜的孔结构和水通量进行分析. 结果表明:随着聚乙烯吡咯烷酮质量分数的增加,分离膜的通孔电阻下降,孔径增大,水通量增加. 在孔径为10 nm~40 nm的范围内,分离膜的水通量结果与其通孔电阻之间成反比关系,该关系符合分离膜的孔洞模型. 因此,电化学交流阻抗谱是一种评价分离膜的通孔结构的有效方法.
Abstract:
An electrochemical characterization method was developed for probing the pore structure of separation membrane by electrochemical impedance spectroscopy obtained from electrochemical work station. A series of polysulfone membranes with different hole structures were prepared by altering the mass fraction of polyvinyl pyrrolidone (PVP). The hole structure and water flux of the membranes were evaluated by the electrochemical work station, the pore analyzer and the membrane performance tester. The results show that the resistance of the open pore decreases in separation membrane and the mean pore size and the water flux become larger when the mass fraction of PVP rises. We find an inverse relationship between the water flux and the pore resistance over the range of pore size from 10 nm to 40 nm, which can be well explained by the pore model, suggesting that the electrochemical impedance spectroscopy is an effective method for evaluating the open-pore structure of separation membrane.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-02-26 基金项目:国家自然科学基金(NSFC11205118);青海盐湖资源综合利用重点实验室开放基金(Q-SYS-201516- KF-04, Q-SYS-201516-KF-05)作者简介:王 帅,硕士研究生. E-mail:[email protected]
更新日期/Last Update: 2017-10-25