Highly Hydrophilic Thin-Film Composite Forward Osmosis Membranes Functionalized with Surface-Tailored Nanoparticles

Handle URI:
http://hdl.handle.net/10754/598505
Title:
Highly Hydrophilic Thin-Film Composite Forward Osmosis Membranes Functionalized with Surface-Tailored Nanoparticles
Authors:
Tiraferri, Alberto; Kang, Yan; Giannelis, Emmanuel P.; Elimelech, Menachem
Abstract:
Thin-film composite polyamide membranes are state-of-the-art materials for membrane-based water purification and desalination processes, which require both high rejection of contaminants and high water permeabilities. However, these membranes are prone to fouling when processing natural waters and wastewaters, because of the inherent surface physicochemical properties of polyamides. The present work demonstrates the fabrication of forward osmosis polyamide membranes with optimized surface properties via facile and scalable functionalization with fine-tuned nanoparticles. Silica nanoparticles are coated with superhydrophilic ligands possessing functional groups that impart stability to the nanoparticles and bind irreversibly to the native carboxyl moieties on the membrane selective layer. The tightly tethered layer of nanoparticles tailors the surface chemistry of the novel composite membrane without altering the morphology or water/solute permeabilities of the membrane selective layer. Surface characterization and interfacial energy analysis confirm that highly hydrophilic and wettable membrane surfaces are successfully attained. Lower intermolecular adhesion forces are measured between the new membrane materials and model organic foulants, indicating the presence of a bound hydration layer at the polyamide membrane surface that creates a barrier for foulant adhesion. © 2012 American Chemical Society.
Citation:
Tiraferri A, Kang Y, Giannelis EP, Elimelech M (2012) Highly Hydrophilic Thin-Film Composite Forward Osmosis Membranes Functionalized with Surface-Tailored Nanoparticles. ACS Applied Materials & Interfaces 4: 5044–5053. Available: http://dx.doi.org/10.1021/am301532g.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
26-Sep-2012
DOI:
10.1021/am301532g
PubMed ID:
22948042
Type:
Article
ISSN:
1944-8244; 1944-8252
Sponsors:
This publication is based on work supported by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). We also acknowledge the NWRI-AMTA Fellowship for Membrane Technology, awarded to A.T.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorTiraferri, Albertoen
dc.contributor.authorKang, Yanen
dc.contributor.authorGiannelis, Emmanuel P.en
dc.contributor.authorElimelech, Menachemen
dc.date.accessioned2016-02-25T13:31:12Zen
dc.date.available2016-02-25T13:31:12Zen
dc.date.issued2012-09-26en
dc.identifier.citationTiraferri A, Kang Y, Giannelis EP, Elimelech M (2012) Highly Hydrophilic Thin-Film Composite Forward Osmosis Membranes Functionalized with Surface-Tailored Nanoparticles. ACS Applied Materials & Interfaces 4: 5044–5053. Available: http://dx.doi.org/10.1021/am301532g.en
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.pmid22948042en
dc.identifier.doi10.1021/am301532gen
dc.identifier.urihttp://hdl.handle.net/10754/598505en
dc.description.abstractThin-film composite polyamide membranes are state-of-the-art materials for membrane-based water purification and desalination processes, which require both high rejection of contaminants and high water permeabilities. However, these membranes are prone to fouling when processing natural waters and wastewaters, because of the inherent surface physicochemical properties of polyamides. The present work demonstrates the fabrication of forward osmosis polyamide membranes with optimized surface properties via facile and scalable functionalization with fine-tuned nanoparticles. Silica nanoparticles are coated with superhydrophilic ligands possessing functional groups that impart stability to the nanoparticles and bind irreversibly to the native carboxyl moieties on the membrane selective layer. The tightly tethered layer of nanoparticles tailors the surface chemistry of the novel composite membrane without altering the morphology or water/solute permeabilities of the membrane selective layer. Surface characterization and interfacial energy analysis confirm that highly hydrophilic and wettable membrane surfaces are successfully attained. Lower intermolecular adhesion forces are measured between the new membrane materials and model organic foulants, indicating the presence of a bound hydration layer at the polyamide membrane surface that creates a barrier for foulant adhesion. © 2012 American Chemical Society.en
dc.description.sponsorshipThis publication is based on work supported by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). We also acknowledge the NWRI-AMTA Fellowship for Membrane Technology, awarded to A.T.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectforward osmosisen
dc.subjectfouling, antifoulingen
dc.subjectmembrane functionalizationen
dc.subjectnanocomposite membranesen
dc.subjectsuperhydrophilicen
dc.subjectthin-film composite membranesen
dc.titleHighly Hydrophilic Thin-Film Composite Forward Osmosis Membranes Functionalized with Surface-Tailored Nanoparticlesen
dc.typeArticleen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.contributor.institutionYale University, New Haven, United Statesen
dc.contributor.institutionCornell University, Ithaca, United Statesen
kaust.grant.numberKUS-C1-018-02en
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