Positively charged membranes with fine-tuned nanopores for ultrafast and high-precision cation separation
DC Field | Value | Language |
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dc.contributor.author | Shin, Min Gyu | - |
dc.contributor.author | Seo, Jin Young | - |
dc.contributor.author | Park, Hosik | - |
dc.contributor.author | Park, You-In | - |
dc.contributor.author | Ji, Seulgi | - |
dc.contributor.author | Lee, Sun Sook | - |
dc.contributor.author | Lee, Jung-Hyun | - |
dc.date.accessioned | 2022-02-14T14:40:36Z | - |
dc.date.available | 2022-02-14T14:40:36Z | - |
dc.date.created | 2022-02-08 | - |
dc.date.issued | 2021-11-09 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135751 | - |
dc.description.abstract | There is significant interest in high-performance positively charged membranes that enable the fast and high-precision separation of various cationic substances for purifying water and recovering precious metals. This study demonstrates that the ultrafast and precise separation of cations can be achieved using positively charged membranes with fine-controlled nanopores fabricated via a solvent-controlled swelling-diffusion (SD) method. Polyamide (PA) membranes are treated with a dimethyl sulfoxide/water mixture solvent containing a rationally designed, positively charged strong polyelectrolyte, followed by water washing. Solvent-induced PA activation and polyelectrolyte incorporation into PA cooperatively produce a highly-permeable and more uniform PA nanopore structure with a strong and stable positive surface charge. Consequently, the SD-modified membrane exhibits unprecedentedly high water permeance (similar to 22 L m(-2) h(-1) bar(-1)) and high rejection (similar to 99.5% for MgCl2, >90% for hazardous metals) and selectivity (similar to 23.4 for Li+/Mg2+) for divalent cations, significantly outperforming commercial and previously reported membranes. Our proposed strategy provides a commercially viable means for the fabrication of high-performance functional membranes and coatings and sheds light on their structure-performance relationship. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | COMPOSITE NANOFILTRATION MEMBRANE | - |
dc.subject | INTERFACIAL POLYMERIZATION | - |
dc.subject | POLYVINYLAMINE PVAM | - |
dc.subject | FACILE PREPARATION | - |
dc.subject | AMMONIUM-CHLORIDE | - |
dc.subject | HIGH REJECTION | - |
dc.subject | FABRICATION | - |
dc.subject | CHITOSAN | - |
dc.subject | SURFACE | - |
dc.subject | METHACRYLATE | - |
dc.title | Positively charged membranes with fine-tuned nanopores for ultrafast and high-precision cation separation | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jung-Hyun | - |
dc.identifier.doi | 10.1039/d1ta07865h | - |
dc.identifier.scopusid | 2-s2.0-85118942763 | - |
dc.identifier.wosid | 000711944200001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.43, pp.24355 - 24364 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.citation.number | 43 | - |
dc.citation.startPage | 24355 | - |
dc.citation.endPage | 24364 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | AMMONIUM-CHLORIDE | - |
dc.subject.keywordPlus | CHITOSAN | - |
dc.subject.keywordPlus | COMPOSITE NANOFILTRATION MEMBRANE | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | FACILE PREPARATION | - |
dc.subject.keywordPlus | HIGH REJECTION | - |
dc.subject.keywordPlus | INTERFACIAL POLYMERIZATION | - |
dc.subject.keywordPlus | METHACRYLATE | - |
dc.subject.keywordPlus | POLYVINYLAMINE PVAM | - |
dc.subject.keywordPlus | SURFACE | - |
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