High-performance polyamide thin-film-nanocomposite reverse osmosis membranes containing hydrophobic zeolitic imidazolate framework-8

Handle URI:
http://hdl.handle.net/10754/575723
Title:
High-performance polyamide thin-film-nanocomposite reverse osmosis membranes containing hydrophobic zeolitic imidazolate framework-8
Authors:
Duan, Jintang ( 0000-0003-0878-0032 ) ; Pan, Yichang; Pacheco Oreamuno, Federico ( 0000-0002-7030-4689 ) ; Litwiller, Eric ( 0000-0001-5366-0967 ) ; Lai, Zhiping ( 0000-0001-9555-6009 ) ; Pinnau, Ingo ( 0000-0003-3040-9088 )
Abstract:
A hydrophobic, hydrothermally stable metal-organic framework (MOF) - zeolitic imidazolate framework-8 (ZIF-8) was successfully incorporated into the selective polyamide (PA) layer of thin-film nanocomposite (TFN) membranes for water desalination. The potential advantages of ZIF-8 over classic hydrophilic zeolite used in TFNs include: i) theoretically faster water transport within the framework and ii) better compatibility with the PA matrix. The TFN membranes were characterized with SEM, TEM, AFM, XPS, water contact angle measurements and reverse osmosis tests under 15.5bar hydraulic pressure with 2000ppm NaCl solution. Lab-made, nano-sized (~200nm) ZIF-8 increased water permeance to 3.35±0.08L/m2·h·bar at 0.4% (w/v) loading, 162% higher than the pristine PA membranes; meanwhile, high NaCl rejection was maintained. The TFN surface was less crosslinked and more hydrophilic than that of the pristine PA. A filler encapsulation mechanism was proposed for the effects of filler on TFN membrane surface morphology and properties. This study experimentally verified the potential use of ZIF-8 in advanced TFN RO membranes.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
Feb-2015
DOI:
10.1016/j.memsci.2014.11.038
Type:
Article
ISSN:
03767388
Sponsors:
Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). The authors acknowledge Dr. Lan Zhao, Dr. Rachid Sougrat and Dr. Mohamed Hedhili from the KAUST Advanced Nanofabrication Imaging and Characterization Core Lab for assistance.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program; Chemical and Biological Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorDuan, Jintangen
dc.contributor.authorPan, Yichangen
dc.contributor.authorPacheco Oreamuno, Federicoen
dc.contributor.authorLitwiller, Ericen
dc.contributor.authorLai, Zhipingen
dc.contributor.authorPinnau, Ingoen
dc.date.accessioned2015-08-24T08:36:36Zen
dc.date.available2015-08-24T08:36:36Zen
dc.date.issued2015-02en
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2014.11.038en
dc.identifier.urihttp://hdl.handle.net/10754/575723en
dc.description.abstractA hydrophobic, hydrothermally stable metal-organic framework (MOF) - zeolitic imidazolate framework-8 (ZIF-8) was successfully incorporated into the selective polyamide (PA) layer of thin-film nanocomposite (TFN) membranes for water desalination. The potential advantages of ZIF-8 over classic hydrophilic zeolite used in TFNs include: i) theoretically faster water transport within the framework and ii) better compatibility with the PA matrix. The TFN membranes were characterized with SEM, TEM, AFM, XPS, water contact angle measurements and reverse osmosis tests under 15.5bar hydraulic pressure with 2000ppm NaCl solution. Lab-made, nano-sized (~200nm) ZIF-8 increased water permeance to 3.35±0.08L/m2·h·bar at 0.4% (w/v) loading, 162% higher than the pristine PA membranes; meanwhile, high NaCl rejection was maintained. The TFN surface was less crosslinked and more hydrophilic than that of the pristine PA. A filler encapsulation mechanism was proposed for the effects of filler on TFN membrane surface morphology and properties. This study experimentally verified the potential use of ZIF-8 in advanced TFN RO membranes.en
dc.description.sponsorshipResearch reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). The authors acknowledge Dr. Lan Zhao, Dr. Rachid Sougrat and Dr. Mohamed Hedhili from the KAUST Advanced Nanofabrication Imaging and Characterization Core Lab for assistance.en
dc.publisherElsevier BVen
dc.subjectInterfacial polymerizationen
dc.subjectNanotechnologyen
dc.subjectReverse osmosisen
dc.subjectThin-film-nanocompositeen
dc.subjectZIF-8en
dc.titleHigh-performance polyamide thin-film-nanocomposite reverse osmosis membranes containing hydrophobic zeolitic imidazolate framework-8en
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.identifier.journalJournal of Membrane Scienceen
kaust.authorDuan, Jintangen
kaust.authorPan, Yichangen
kaust.authorLitwiller, Ericen
kaust.authorLai, Zhipingen
kaust.authorPinnau, Ingoen
kaust.authorPacheco Oreamuno, Federicoen
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