Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity
Developing monovalent cation permselective membranes (MCPMs) with high-efficient permselectivity is the core concern in specific industrial applications. In this work, we have fabricated a series of novel cation exchange membranes (CEMs) based on sulfonated polysulfone (SPSF) surface modification by...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8151526/ https://www.ncbi.nlm.nih.gov/pubmed/34068766 http://dx.doi.org/10.3390/membranes11050351 |
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author | Yang, Shanshan Yu, Shuaijun Yu, Lu Liu, Yuanwei Liao, Junbin Shen, Jiangnan Gao, Congjie |
author_facet | Yang, Shanshan Yu, Shuaijun Yu, Lu Liu, Yuanwei Liao, Junbin Shen, Jiangnan Gao, Congjie |
author_sort | Yang, Shanshan |
collection | PubMed |
description | Developing monovalent cation permselective membranes (MCPMs) with high-efficient permselectivity is the core concern in specific industrial applications. In this work, we have fabricated a series of novel cation exchange membranes (CEMs) based on sulfonated polysulfone (SPSF) surface modification by polyethyleneimine (PEI) and 4′-aminobenzo-12-crown-4 (12C4) codeposited with dopamine (DA) successively, which was followed by the cross-linking of glutaraldehyde (GA). The as-prepared membranes before and after modification were systematically characterized with regard to their structures as well as their physicochemical and electrochemical properties. Particularly, the codeposition sequence of modified ingredients was investigated on galvanostatic permselectivity to cations. The modified membrane (M-12C4-0.50-PEI) exhibits significantly prominent selectivity to Li(+) ions ([Formula: see text] = 5.23) and K(+) ions ([Formula: see text] = 13.56) in Li(+)/Mg(2+) and K(+)/Mg(2+) systems in electrodialysis (ED), which is far superior to the pristine membrane (M-0, [Formula: see text] = 0.46, [Formula: see text] = 1.23) at a constant current density of 5.0 mA·cm(−2). It possibly arises from the synergistic effects of electrostatic repulsion (positively charged PEI), pore-size sieving (distribution of modified ingredients), and specific interaction effect (12C4 ~Li(+)). This facile strategy may provide new insights into developing selective CEMs in the separation of specific cations by ED. |
format | Online Article Text |
id | pubmed-8151526 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81515262021-05-27 Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity Yang, Shanshan Yu, Shuaijun Yu, Lu Liu, Yuanwei Liao, Junbin Shen, Jiangnan Gao, Congjie Membranes (Basel) Article Developing monovalent cation permselective membranes (MCPMs) with high-efficient permselectivity is the core concern in specific industrial applications. In this work, we have fabricated a series of novel cation exchange membranes (CEMs) based on sulfonated polysulfone (SPSF) surface modification by polyethyleneimine (PEI) and 4′-aminobenzo-12-crown-4 (12C4) codeposited with dopamine (DA) successively, which was followed by the cross-linking of glutaraldehyde (GA). The as-prepared membranes before and after modification were systematically characterized with regard to their structures as well as their physicochemical and electrochemical properties. Particularly, the codeposition sequence of modified ingredients was investigated on galvanostatic permselectivity to cations. The modified membrane (M-12C4-0.50-PEI) exhibits significantly prominent selectivity to Li(+) ions ([Formula: see text] = 5.23) and K(+) ions ([Formula: see text] = 13.56) in Li(+)/Mg(2+) and K(+)/Mg(2+) systems in electrodialysis (ED), which is far superior to the pristine membrane (M-0, [Formula: see text] = 0.46, [Formula: see text] = 1.23) at a constant current density of 5.0 mA·cm(−2). It possibly arises from the synergistic effects of electrostatic repulsion (positively charged PEI), pore-size sieving (distribution of modified ingredients), and specific interaction effect (12C4 ~Li(+)). This facile strategy may provide new insights into developing selective CEMs in the separation of specific cations by ED. MDPI 2021-05-10 /pmc/articles/PMC8151526/ /pubmed/34068766 http://dx.doi.org/10.3390/membranes11050351 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Shanshan Yu, Shuaijun Yu, Lu Liu, Yuanwei Liao, Junbin Shen, Jiangnan Gao, Congjie Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity |
title | Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity |
title_full | Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity |
title_fullStr | Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity |
title_full_unstemmed | Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity |
title_short | Cation Exchange Membranes Coated with Polyethyleneimine and Crown Ether to Improve Monovalent Cation Electrodialytic Selectivity |
title_sort | cation exchange membranes coated with polyethyleneimine and crown ether to improve monovalent cation electrodialytic selectivity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8151526/ https://www.ncbi.nlm.nih.gov/pubmed/34068766 http://dx.doi.org/10.3390/membranes11050351 |
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