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Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions

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dc.contributor.author Korolkov, Ilya V.
dc.contributor.author Kuandykova, Azhar
dc.contributor.author Yeszhanov, Arman B.
dc.contributor.author Güven, Olgun
dc.contributor.author Gorin, Yevgeniy G.
dc.contributor.author Zdorovets, Maxim V.
dc.date.accessioned 2024-09-17T05:59:50Z
dc.date.available 2024-09-17T05:59:50Z
dc.date.issued 2020
dc.identifier.issn 2077-0375
dc.identifier.other doi:10.3390/membranes10110322
dc.identifier.uri http://rep.enu.kz/handle/enu/16440
dc.description.abstract The paper describes desalination by membrane distillation (MD) using ion-track membranes. Poly(ethylene terephthalate) (PET) ion-track membranes were hydrophobized by the immobilization of hydrophobic vinyl-silica nanoparticles (Si NPs). Si NPs were synthesized by the sol-gel method, and the addition of the surfactant led to the formation of NPs with average size of 40 nm. The thermal initiator fixed to the surface of membranes allowed attachment of triethoxyvinyl silane Si NPs at the membrane surface. To further increase hydrophobicity, ethoxy groups were fluorinated. The morphology and chemical structure of prepared membranes were characterized by SEM, FTIR, XPS spectroscopy, and a gas permeability test. Hydrophobic properties were evaluated by contact angle (CA) and liquid entry pressure (LEP) measurements. Membranes with CA 125–143◦ were tested in direct contact membrane distillation (DCMD) of 30 g/L saline solution. Membranes showed water fluxes from 2.2 to 15.4 kg/(m2 ·h) with salt rejection values of 93–99%. ru
dc.language.iso en ru
dc.publisher Membranes ru
dc.relation.ispartofseries Volume 10;Issue 11
dc.subject desalination ru
dc.subject hydrophobic modification ru
dc.subject track-etched membranes ru
dc.subject membrane distillation ru
dc.subject silane ru
dc.subject silica nanoparticles ru
dc.title Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions ru
dc.type Article ru


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