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Article: A facile avenue to modify polyelectrolyte multilayers on anion exchange membranes to enhance monovalent selectivity and durability simultaneously

TitleA facile avenue to modify polyelectrolyte multilayers on anion exchange membranes to enhance monovalent selectivity and durability simultaneously
Authors
KeywordsAnion exchange membranes
Cross-linking
Durability
Permselectivity
Polyelectrolyte multilayers
Issue Date2017
Citation
Journal of Membrane Science, 2017, v. 543, p. 310-318 How to Cite?
AbstractLayer-by-layer deposition of polycations and polyanions multilayers on the surface of anion exchange membranes (AEMs) is a simple and versatile method to obtain monovalent anion selectivity. However, the stability of the polyelectrolyte multilayers (PEMs) can be compromised by the weak interactions formed between the deposited barrier and the pristine membrane surface. In this sense, cross-linking appears as an efficient method to improve the chemical stability of PEMs by covalent bonding. In this investigation, polyelectrolyte multilayers was coated on commercial AEMs by alternating electro-deposition with polystyrene sulfonate (PSS) and 2-hydro-xypropyltrimethyl ammonium chloride chitosan (HACC). Subsequently, photosensitive molecules (4,4-diazostilbene-2,2-disulfonic acid disodium salt (DAS)) were mixed into the loose multilayers by soaking in the DAS solution and chemical bonds were formed in the membrane by UV irradiation. The chemical composition and structure of the membrane were confirmed and observed by infrared spectroscopy, atomic force microscopy and scanning electron microscopy. The monovalent selectivity and durability were evaluated by electrodialysis (ED) in a Cl-/SO42- system. The optimized membrane was found to have a stable selectivity during the entire duration of testing (76 h), and while a conventional multilayer modified AEMs completely loses its selectivity after 30 h. Furthermore, the modification process improved the monovalent anion selectivity from 0.39 to 4.36. The experimental results demonstrate the effectivity and feasibility of the modified strategy.
Persistent Identifierhttp://hdl.handle.net/10722/327950
ISSN
2023 Impact Factor: 8.4
2023 SCImago Journal Rankings: 1.848
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, Huimin-
dc.contributor.authorRuan, Huimin-
dc.contributor.authorZhao, Yan-
dc.contributor.authorPan, Jiefeng-
dc.contributor.authorSotto, Arcadio-
dc.contributor.authorGao, Congjie-
dc.contributor.authorvan der Bruggen, Bart-
dc.contributor.authorShen, Jiangnan-
dc.date.accessioned2023-06-05T06:52:53Z-
dc.date.available2023-06-05T06:52:53Z-
dc.date.issued2017-
dc.identifier.citationJournal of Membrane Science, 2017, v. 543, p. 310-318-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/327950-
dc.description.abstractLayer-by-layer deposition of polycations and polyanions multilayers on the surface of anion exchange membranes (AEMs) is a simple and versatile method to obtain monovalent anion selectivity. However, the stability of the polyelectrolyte multilayers (PEMs) can be compromised by the weak interactions formed between the deposited barrier and the pristine membrane surface. In this sense, cross-linking appears as an efficient method to improve the chemical stability of PEMs by covalent bonding. In this investigation, polyelectrolyte multilayers was coated on commercial AEMs by alternating electro-deposition with polystyrene sulfonate (PSS) and 2-hydro-xypropyltrimethyl ammonium chloride chitosan (HACC). Subsequently, photosensitive molecules (4,4-diazostilbene-2,2-disulfonic acid disodium salt (DAS)) were mixed into the loose multilayers by soaking in the DAS solution and chemical bonds were formed in the membrane by UV irradiation. The chemical composition and structure of the membrane were confirmed and observed by infrared spectroscopy, atomic force microscopy and scanning electron microscopy. The monovalent selectivity and durability were evaluated by electrodialysis (ED) in a Cl-/SO42- system. The optimized membrane was found to have a stable selectivity during the entire duration of testing (76 h), and while a conventional multilayer modified AEMs completely loses its selectivity after 30 h. Furthermore, the modification process improved the monovalent anion selectivity from 0.39 to 4.36. The experimental results demonstrate the effectivity and feasibility of the modified strategy.-
dc.languageeng-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectAnion exchange membranes-
dc.subjectCross-linking-
dc.subjectDurability-
dc.subjectPermselectivity-
dc.subjectPolyelectrolyte multilayers-
dc.titleA facile avenue to modify polyelectrolyte multilayers on anion exchange membranes to enhance monovalent selectivity and durability simultaneously-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.memsci.2017.08.072-
dc.identifier.scopuseid_2-s2.0-85028766256-
dc.identifier.volume543-
dc.identifier.spage310-
dc.identifier.epage318-
dc.identifier.eissn1873-3123-
dc.identifier.isiWOS:000411334200031-

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