Show simple item record

dc.contributor.authorTiraferri, Alberto
dc.contributor.authorKang, Yan
dc.contributor.authorGiannelis, Emmanuel P.
dc.contributor.authorElimelech, Menachem
dc.date.accessioned2016-02-25T13:31:12Z
dc.date.available2016-02-25T13:31:12Z
dc.date.issued2012-09-26
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.
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.pmid22948042
dc.identifier.doi10.1021/am301532g
dc.identifier.urihttp://hdl.handle.net/10754/598505
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.
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.
dc.publisherAmerican Chemical Society (ACS)
dc.subjectforward osmosis
dc.subjectfouling, antifouling
dc.subjectmembrane functionalization
dc.subjectnanocomposite membranes
dc.subjectsuperhydrophilic
dc.subjectthin-film composite membranes
dc.titleHighly Hydrophilic Thin-Film Composite Forward Osmosis Membranes Functionalized with Surface-Tailored Nanoparticles
dc.typeArticle
dc.identifier.journalACS Applied Materials & Interfaces
dc.contributor.institutionYale University, New Haven, United States
dc.contributor.institutionCornell University, Ithaca, United States
kaust.grant.numberKUS-C1-018-02


This item appears in the following Collection(s)

Show simple item record