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Article: Janus Membrane with Unparalleled Forward Osmosis Performance

TitleJanus Membrane with Unparalleled Forward Osmosis Performance
Authors
KeywordsComposite membranes
Fluorine compounds
Hydrophobicity
Nanocomposite films
Nanofibers
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/toc/estlcu/current
Citation
Environmental Science & Technology Letters, 2019, v. 6 n. 2, p. 79-85 How to Cite?
AbstractWe report the use of highly porous Janus membranes with unparalleled forward osmosis (FO) performance in terms of water flux and reverse salt flux. A porous Janus FO membrane, composed of a hydrophilic cellulose acetate layer and a hydrophobic polyvinylidene fluoride (PVDF) nanofiber layer, was fabricated by electrospinning. The resultant membrane exhibited outstanding FO performance, with a high water flux of 274.2 L m–2 h–1 and a low reverse salt flux of 1.65 g m–2 h–1 using 1 M NaCl draw solution. Different from the state-of-the-art thin film composite (TFC) membranes, the prepared Janus membrane demonstrates unparalleled FO performance via a nanofluidic diode model, whose high selectivity is determined by the air gap within the hydrophobic nanofiber layer that can effectively prevent the reverse salt diffusion. Wetting of the hydrophobic layer is the crucial issue in Janus FO membranes, which deserves further attention to extend the osmosis longevity.
Persistent Identifierhttp://hdl.handle.net/10722/272864
ISSN
2019 Impact Factor: 7.678

 

DC FieldValueLanguage
dc.contributor.authorZhou, S-
dc.contributor.authorLiu, F-
dc.contributor.authorWang, J-
dc.contributor.authorLin, H-
dc.contributor.authorHan, Q-
dc.contributor.authorZhao, S-
dc.contributor.authorTang, CY-
dc.date.accessioned2019-08-06T09:18:00Z-
dc.date.available2019-08-06T09:18:00Z-
dc.date.issued2019-
dc.identifier.citationEnvironmental Science & Technology Letters, 2019, v. 6 n. 2, p. 79-85-
dc.identifier.issn2328-8930-
dc.identifier.urihttp://hdl.handle.net/10722/272864-
dc.description.abstractWe report the use of highly porous Janus membranes with unparalleled forward osmosis (FO) performance in terms of water flux and reverse salt flux. A porous Janus FO membrane, composed of a hydrophilic cellulose acetate layer and a hydrophobic polyvinylidene fluoride (PVDF) nanofiber layer, was fabricated by electrospinning. The resultant membrane exhibited outstanding FO performance, with a high water flux of 274.2 L m–2 h–1 and a low reverse salt flux of 1.65 g m–2 h–1 using 1 M NaCl draw solution. Different from the state-of-the-art thin film composite (TFC) membranes, the prepared Janus membrane demonstrates unparalleled FO performance via a nanofluidic diode model, whose high selectivity is determined by the air gap within the hydrophobic nanofiber layer that can effectively prevent the reverse salt diffusion. Wetting of the hydrophobic layer is the crucial issue in Janus FO membranes, which deserves further attention to extend the osmosis longevity.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/toc/estlcu/current-
dc.relation.ispartofEnvironmental Science & Technology Letters-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science & Technology Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.estlett.8b00630-
dc.subjectComposite membranes-
dc.subjectFluorine compounds-
dc.subjectHydrophobicity-
dc.subjectNanocomposite films-
dc.subjectNanofibers-
dc.titleJanus Membrane with Unparalleled Forward Osmosis Performance-
dc.typeArticle-
dc.identifier.emailZhou, S: zhoushenghua@nimte.ac.cn-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturepostprint-
dc.identifier.doi10.1021/acs.estlett.8b00630-
dc.identifier.scopuseid_2-s2.0-85060052498-
dc.identifier.hkuros299807-
dc.identifier.volume6-
dc.identifier.issue2-
dc.identifier.spage79-
dc.identifier.epage85-
dc.publisher.placeUnited States-

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