File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Omniphobic nanofibrous membrane with pine-needle-like hierarchical nanostructures: toward enhanced performance for membrane distillation

TitleOmniphobic nanofibrous membrane with pine-needle-like hierarchical nanostructures: toward enhanced performance for membrane distillation
Authors
Keywordsmembrane distillation
omniphobic membrane
titanium dioxide nanorods
electrospun nanofibers
antiwetting and antifouling
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick
Citation
ACS Applied Materials & Interfaces, 2019, v. 11 n. 51, p. 47963-47971 How to Cite?
AbstractWetting and fouling phenomena are the main concerns for membrane distillation (MD) in treating high-salinity industrial wastewater. This work developed an omniphobic membrane by growing titanium dioxide (TiO2) nanorods on polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) nanofibers using a hydrothermal technique. The TiO2 nanorods form a uniform pine-needle-like hierarchical nanostructure on PVDF-HFP fibers. A further fluorination treatment provides the membrane with a low-surface-energy omniphobic surface, displaying contact angles of 168° and 153° for water and mineral oil, respectively. Direct contact MD experiments demonstrated that the resulting membrane shows a high and stable salt rejection of >99.9%, while the pristine PVDF-HFP nanofibrous membrane suffers a rejection decline caused by intense pore wetting and oil fouling in the desalination process in the presence of surfactant and mineral oil. The superior antiwetting and antifouling behaviors were ascribed to a nonwetting Cassie–Baxter state established by the accumulation of a great deal of air in the hydrophobized hierarchical re-entrant structures. The development of omniphobic membranes with pine-needle-like hierarchical nanostructures provides an approach to mitigate membrane wetting and fouling in the MD process for the water reclamation from industrial wastewater.
Persistent Identifierhttp://hdl.handle.net/10722/285057
ISSN
2019 Impact Factor: 8.758
2015 SCImago Journal Rankings: 2.381
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, X-
dc.contributor.authorQing, W-
dc.contributor.authorWu, Y-
dc.contributor.authorShao, S-
dc.contributor.authorPeng, LE-
dc.contributor.authorYang, Y-
dc.contributor.authorWang, P-
dc.contributor.authorLiu, F-
dc.contributor.authorTang, CY-
dc.date.accessioned2020-08-07T09:06:09Z-
dc.date.available2020-08-07T09:06:09Z-
dc.date.issued2019-
dc.identifier.citationACS Applied Materials & Interfaces, 2019, v. 11 n. 51, p. 47963-47971-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/285057-
dc.description.abstractWetting and fouling phenomena are the main concerns for membrane distillation (MD) in treating high-salinity industrial wastewater. This work developed an omniphobic membrane by growing titanium dioxide (TiO2) nanorods on polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) nanofibers using a hydrothermal technique. The TiO2 nanorods form a uniform pine-needle-like hierarchical nanostructure on PVDF-HFP fibers. A further fluorination treatment provides the membrane with a low-surface-energy omniphobic surface, displaying contact angles of 168° and 153° for water and mineral oil, respectively. Direct contact MD experiments demonstrated that the resulting membrane shows a high and stable salt rejection of >99.9%, while the pristine PVDF-HFP nanofibrous membrane suffers a rejection decline caused by intense pore wetting and oil fouling in the desalination process in the presence of surfactant and mineral oil. The superior antiwetting and antifouling behaviors were ascribed to a nonwetting Cassie–Baxter state established by the accumulation of a great deal of air in the hydrophobized hierarchical re-entrant structures. The development of omniphobic membranes with pine-needle-like hierarchical nanostructures provides an approach to mitigate membrane wetting and fouling in the MD process for the water reclamation from industrial wastewater.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/aamick-
dc.relation.ispartofACS Applied Materials & Interfaces-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, 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/acsami.9b17494-
dc.subjectmembrane distillation-
dc.subjectomniphobic membrane-
dc.subjecttitanium dioxide nanorods-
dc.subjectelectrospun nanofibers-
dc.subjectantiwetting and antifouling-
dc.titleOmniphobic nanofibrous membrane with pine-needle-like hierarchical nanostructures: toward enhanced performance for membrane distillation-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturepostprint-
dc.identifier.doi10.1021/acsami.9b17494-
dc.identifier.pmid31790582-
dc.identifier.scopuseid_2-s2.0-85076923408-
dc.identifier.hkuros312232-
dc.identifier.volume11-
dc.identifier.issue51-
dc.identifier.spage47963-
dc.identifier.epage47971-
dc.identifier.isiWOS:000505626900030-
dc.publisher.placeUnited States-
dc.identifier.issnl1944-8244-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats