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Article: Omniphobic PVDF nanofibrous membrane for superior anti-wetting performance in direct contact membrane distillation

TitleOmniphobic PVDF nanofibrous membrane for superior anti-wetting performance in direct contact membrane distillation
Authors
KeywordsPolyvinylidene fluoride (PVDF)
Membrane distillation
Electrospinning
Desalination
Omniphobic membrane
Issue Date2020
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal of Membrane Science, 2020, v. 608, p. article no. 118226 How to Cite?
AbstractMembrane wetting caused by low surface tension pollutants in feed solution has been a major challenge for membrane distillation (MD), and omniphobic membranes have been proposed as a promising solution to address this challenge due to their strong repellence towards liquids with a broad range of surface tensions. In this study, we report a nanoparticle-free strategy to fabricate omniphobic polyvinylidene fluoride (PVDF) nanofibrous membranes for robust MD desalination. A solvent-thermal induced roughening method was used to create multiscale hierarchical nanofin structures on electrospun PVDF nanofibers, followed by a polydopamine-anchored surface fluorination treatment to reduce the surface energy of the nanofibrous membrane. We show that the as-prepared membrane exhibited super repellence (>150°) to diverse liquids with surface tension ranging from 73 to 30 mN m−1. Moreover, the omniphobic membrane maintained stable salt rejection and water flux in direct contact MD processes in the presence of sodium dodecyl sulfate surfactant (up to 0.4 mM) or mineral oil (up to 480 mg L−1), demonstrating its promising potential in practical water reclamation from MD applications.
Persistent Identifierhttp://hdl.handle.net/10722/284807
ISSN
2019 Impact Factor: 7.183
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQing, W-
dc.contributor.authorWu, Y-
dc.contributor.authorLi, X-
dc.contributor.authorShi, X-
dc.contributor.authorShao, S-
dc.contributor.authorMei, Y-
dc.contributor.authorZhang, W-
dc.contributor.authorTang, CY-
dc.date.accessioned2020-08-07T09:02:53Z-
dc.date.available2020-08-07T09:02:53Z-
dc.date.issued2020-
dc.identifier.citationJournal of Membrane Science, 2020, v. 608, p. article no. 118226-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/284807-
dc.description.abstractMembrane wetting caused by low surface tension pollutants in feed solution has been a major challenge for membrane distillation (MD), and omniphobic membranes have been proposed as a promising solution to address this challenge due to their strong repellence towards liquids with a broad range of surface tensions. In this study, we report a nanoparticle-free strategy to fabricate omniphobic polyvinylidene fluoride (PVDF) nanofibrous membranes for robust MD desalination. A solvent-thermal induced roughening method was used to create multiscale hierarchical nanofin structures on electrospun PVDF nanofibers, followed by a polydopamine-anchored surface fluorination treatment to reduce the surface energy of the nanofibrous membrane. We show that the as-prepared membrane exhibited super repellence (>150°) to diverse liquids with surface tension ranging from 73 to 30 mN m−1. Moreover, the omniphobic membrane maintained stable salt rejection and water flux in direct contact MD processes in the presence of sodium dodecyl sulfate surfactant (up to 0.4 mM) or mineral oil (up to 480 mg L−1), demonstrating its promising potential in practical water reclamation from MD applications.-
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.subjectPolyvinylidene fluoride (PVDF)-
dc.subjectMembrane distillation-
dc.subjectElectrospinning-
dc.subjectDesalination-
dc.subjectOmniphobic membrane-
dc.titleOmniphobic PVDF nanofibrous membrane for superior anti-wetting performance in direct contact membrane distillation-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.memsci.2020.118226-
dc.identifier.scopuseid_2-s2.0-85084409455-
dc.identifier.hkuros312252-
dc.identifier.volume608-
dc.identifier.spagearticle no. 118226-
dc.identifier.epagearticle no. 118226-
dc.identifier.isiWOS:000539295000001-
dc.publisher.placeNetherlands-
dc.identifier.issnl0376-7388-

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