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- Publisher Website: 10.1016/j.memsci.2023.122003
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Article: Guanidinium manipulated interfacial polymerization for polyamide nanofiltration membranes with ultra-high permselectivity
Title | Guanidinium manipulated interfacial polymerization for polyamide nanofiltration membranes with ultra-high permselectivity |
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Authors | |
Keywords | Free volume Guanidinium Nanofiltration Permselectivity Polyamide membrane |
Issue Date | 5-Dec-2023 |
Publisher | Elsevier |
Citation | Journal of Membrane Science, 2023, v. 687 How to Cite? |
Abstract | Polyamide (PA) nanofiltration (NF) membranes with excellent permeability and selectivity have always been the ultimate pursuit of desalination technology. Herein, we present a guanidinium manipulated interfacial polymerization strategy to develop guanidyl-integrated PA NF membranes with ultra-high permselectivity. A nylon microfiltration membrane is utilized as the support to conduct spatial-temporal regulation of amine monomers along with controllable diffusion reaction. Through introducing 1,3-diaminoguanidine (DAG) or triaminoguanidine (TAG) into the aqueous piperazine solution, the free volumes of PA membranes could be well modulated at the sub-angstrom scale. Consequently, the TAG-integrated PA membrane exhibited high water permeance of 33.1 LMH bar−1 and superior Na2SO4 rejection of 99.2%. Meanwhile, this membrane achieved outstanding anion sieving capability (Cl−/SO42− ∼ 343) and nearly 100% tetracycline removal, which is superior to the “state-of-the-art” PA NF membranes. The DAG-integrated PA membrane attained ultra-high water permeance of 46.5 LMH bar−1 due to its relatively large free volume. In addition, the nylon composite PA membranes displayed desirable anti-pressure and organic solvent-resistant abilities. This study provides a convenient and scalable preparation strategy for highly permselective NF membranes, which holds great application potential in desalination and resource recovery. |
Persistent Identifier | http://hdl.handle.net/10722/346059 |
ISSN | 2023 Impact Factor: 8.4 2023 SCImago Journal Rankings: 1.848 |
DC Field | Value | Language |
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dc.contributor.author | Xu, Shuting | - |
dc.contributor.author | Liu, Jiahuan | - |
dc.contributor.author | Wang, Jianqiang | - |
dc.contributor.author | Lin, Haibo | - |
dc.contributor.author | Han, Qiu | - |
dc.contributor.author | Liu, Fu | - |
dc.contributor.author | Tang, Chuyang Y. | - |
dc.date.accessioned | 2024-09-07T00:30:22Z | - |
dc.date.available | 2024-09-07T00:30:22Z | - |
dc.date.issued | 2023-12-05 | - |
dc.identifier.citation | Journal of Membrane Science, 2023, v. 687 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.uri | http://hdl.handle.net/10722/346059 | - |
dc.description.abstract | Polyamide (PA) nanofiltration (NF) membranes with excellent permeability and selectivity have always been the ultimate pursuit of desalination technology. Herein, we present a guanidinium manipulated interfacial polymerization strategy to develop guanidyl-integrated PA NF membranes with ultra-high permselectivity. A nylon microfiltration membrane is utilized as the support to conduct spatial-temporal regulation of amine monomers along with controllable diffusion reaction. Through introducing 1,3-diaminoguanidine (DAG) or triaminoguanidine (TAG) into the aqueous piperazine solution, the free volumes of PA membranes could be well modulated at the sub-angstrom scale. Consequently, the TAG-integrated PA membrane exhibited high water permeance of 33.1 LMH bar−1 and superior Na2SO4 rejection of 99.2%. Meanwhile, this membrane achieved outstanding anion sieving capability (Cl−/SO42− ∼ 343) and nearly 100% tetracycline removal, which is superior to the “state-of-the-art” PA NF membranes. The DAG-integrated PA membrane attained ultra-high water permeance of 46.5 LMH bar−1 due to its relatively large free volume. In addition, the nylon composite PA membranes displayed desirable anti-pressure and organic solvent-resistant abilities. This study provides a convenient and scalable preparation strategy for highly permselective NF membranes, which holds great application potential in desalination and resource recovery. | - |
dc.language | eng | - |
dc.publisher | Elsevier | - |
dc.relation.ispartof | Journal of Membrane Science | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Free volume | - |
dc.subject | Guanidinium | - |
dc.subject | Nanofiltration | - |
dc.subject | Permselectivity | - |
dc.subject | Polyamide membrane | - |
dc.title | Guanidinium manipulated interfacial polymerization for polyamide nanofiltration membranes with ultra-high permselectivity | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.memsci.2023.122003 | - |
dc.identifier.scopus | eid_2-s2.0-85169072693 | - |
dc.identifier.volume | 687 | - |
dc.identifier.eissn | 1873-3123 | - |
dc.identifier.issnl | 0376-7388 | - |