RCEES OpenIR  > 中国科学院饮用水科学与技术重点实验室
Tuneable ion transport by electrically responsive membranes under electrical assistance
Xu, Lili; Liu, Shuai; Yu, Ling; Li, Kuiling; Zhang, Yong; Wang, Jianbing; Wang, Jun
2022
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume663Pages:121046-1-11
AbstractThe conventional membrane technology provides an effective solution for ion separation. However, the tradi-tional membrane is not able to tune the permselectivity during operation, and has inherent drawbacks of per-meance and selectivity trade-off. In view of this, the purpose of this project is to realize controllable ion transport without impeding water filtration through electrically responsive membrane (ERMs) under electrical assistance. To achieve this, we developed electrically responsive membranes with different electrical conductivities and surface charge properties by incorporating multi-walled carbon nanotubes (CNTs) and different acids doped polyaniline (PANI). The external potential was supplied to create tuneable electrostatic interactions between surface charged ERMs and ions, which was expected to regulate and control ion transport. It was found that the developed ERMs exhibited improved rejection without decreasing the water permeance under applied potential. The responsiveness of ion rejection to the electrical potential was affected by the combined effect of charge density and electrical conductivity. The calculations based on the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory suggested that imposing an external voltage increased the surface potential of ERMs and thus improved the electrostatic repulsive force between ERMs and ions, resulting in improved ion rejection. It is believed that this simple and feasible strategy for fabrication of ERMs has a potential for practical applications in tunable ion separation.
Department中国科学院饮用水科学与技术重点实验室
KeywordTuneable ion rejection Electrically responsive membrane Electrostatic repulsion Trade-off effect Electrical assistance
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/48579
Collection中国科学院饮用水科学与技术重点实验室
Affiliation1.Chinese Academy of Sciences
2.Research Center for Eco-Environmental Sciences (RCEES)
3.China University of Mining & Technology
4.Zhejiang University of Technology
5.University of Chinese Academy of Sciences, CAS
Recommended Citation
GB/T 7714
Xu, Lili,Liu, Shuai,Yu, Ling,et al. Tuneable ion transport by electrically responsive membranes under electrical assistance[J]. JOURNAL OF MEMBRANE SCIENCE,2022,663:121046-1-11.
APA Xu, Lili.,Liu, Shuai.,Yu, Ling.,Li, Kuiling.,Zhang, Yong.,...&Wang, Jun.(2022).Tuneable ion transport by electrically responsive membranes under electrical assistance.JOURNAL OF MEMBRANE SCIENCE,663,121046-1-11.
MLA Xu, Lili,et al."Tuneable ion transport by electrically responsive membranes under electrical assistance".JOURNAL OF MEMBRANE SCIENCE 663(2022):121046-1-11.
Files in This Item: Download All
File Name/Size DocType Version Access License
Tuneable ion transpo(9288KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xu, Lili]'s Articles
[Liu, Shuai]'s Articles
[Yu, Ling]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xu, Lili]'s Articles
[Liu, Shuai]'s Articles
[Yu, Ling]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xu, Lili]'s Articles
[Liu, Shuai]'s Articles
[Yu, Ling]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Tuneable ion transport by electrically responsive membranes under electrical assistance.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.