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Article: Polyamide reverse osmosis membranes containing 1D nanochannels for enhanced water purification

TitlePolyamide reverse osmosis membranes containing 1D nanochannels for enhanced water purification
Authors
KeywordsThin-film composite membrane
Reverse osmosis
Copper hydroxide nanorods (CuNRs)
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal of Membrane Science, 2021, v. 618, p. article no. 118681 How to Cite?
AbstractThin-film composite (TFC) reverse osmosis (RO) membrane is the gold-standard for desalination and water reuse. Recent literature highlights the importance of polyamide (PA) rejection layer containing nanovoids to manipulate the water permeability and salt rejection. In this study, a facile template-assisted approach was applied to generate one-dimensional (1D) nanochannels in the polyamide rejection layer of RO membranes by preloading copper nanorods inside the PA layer followed by acid etching. In addition, a TFC RO membrane containing 0D nanovoids was also fabricated to compare the dimensional effect of nanochannels on membrane morphologies and performances. Specifically, the TFC-0D membrane only exhibited 61% higher water permeability compared to that of the control TFC, while the TFC-1D membrane showed 126% higher water flux with similar NaCl rejection, probably due to the dimensional improvement of the nanochannels inside the rejection layer. This templates-assisted approach paves a feasible way for fabricating high-performance next-generation RO membranes.
Persistent Identifierhttp://hdl.handle.net/10722/305298
ISSN
2020 Impact Factor: 8.742
2020 SCImago Journal Rankings: 1.929
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, WX-
dc.contributor.authorYang, Z-
dc.contributor.authorLiu, WL-
dc.contributor.authorHuang, ZH-
dc.contributor.authorZhang, H-
dc.contributor.authorLi, M-
dc.contributor.authorMa, XH-
dc.contributor.authorTang, CY-
dc.contributor.authorXu, ZL-
dc.date.accessioned2021-10-20T10:07:26Z-
dc.date.available2021-10-20T10:07:26Z-
dc.date.issued2021-
dc.identifier.citationJournal of Membrane Science, 2021, v. 618, p. article no. 118681-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/305298-
dc.description.abstractThin-film composite (TFC) reverse osmosis (RO) membrane is the gold-standard for desalination and water reuse. Recent literature highlights the importance of polyamide (PA) rejection layer containing nanovoids to manipulate the water permeability and salt rejection. In this study, a facile template-assisted approach was applied to generate one-dimensional (1D) nanochannels in the polyamide rejection layer of RO membranes by preloading copper nanorods inside the PA layer followed by acid etching. In addition, a TFC RO membrane containing 0D nanovoids was also fabricated to compare the dimensional effect of nanochannels on membrane morphologies and performances. Specifically, the TFC-0D membrane only exhibited 61% higher water permeability compared to that of the control TFC, while the TFC-1D membrane showed 126% higher water flux with similar NaCl rejection, probably due to the dimensional improvement of the nanochannels inside the rejection layer. This templates-assisted approach paves a feasible way for fabricating high-performance next-generation RO membranes.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectThin-film composite membrane-
dc.subjectReverse osmosis-
dc.subjectCopper hydroxide nanorods (CuNRs)-
dc.titlePolyamide reverse osmosis membranes containing 1D nanochannels for enhanced water purification-
dc.typeArticle-
dc.identifier.emailYang, Z: zheyang8@hku.hk-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityYang, Z=rp02847-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.memsci.2020.118681-
dc.identifier.scopuseid_2-s2.0-85091955165-
dc.identifier.hkuros326753-
dc.identifier.volume618-
dc.identifier.spagearticle no. 118681-
dc.identifier.epagearticle no. 118681-
dc.identifier.isiWOS:000587434700040-
dc.publisher.placeNetherlands-

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