Membrane based electrospun poly cyclodextrin nanofibers coated with ZnO nanograins by ALD Ultrafiltration blended photocatalysis for degradation of organic micropollutants

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buir.contributor.authorRanjith, Kugalur Shanmugam
buir.contributor.authorYıldız, Zehra İrem
buir.contributor.authorKhalily, Mohammad Aref
buir.contributor.authorUyar, Tamer
buir.contributor.orcidRanjith, Kugalur Shanmugam|0000-0003-3942-8672
buir.contributor.orcidYıldız, Zehra İrem|0000-0001-6220-6504
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage122002-11en_US
dc.citation.spage122002-1
dc.citation.volumeNumber686
dc.contributor.authorRanjith, Kugalur Shanmugam
dc.contributor.authorYıldız, Zehra İrem
dc.contributor.authorKhalily, Mohammad Aref
dc.contributor.authorHuh, Y. S.
dc.contributor.authorHan, Y.
dc.contributor.authorUyar, Tamer
dc.date.accessioned2024-03-15T13:24:34Z
dc.date.available2024-03-15T13:24:34Z
dc.date.issued2023-11-15
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)
dc.departmentNanotechnology Research Center (NANOTAM)
dc.description.abstractMembranes with simultaneous selective adsorption functionality and excellent photocatalytic response have been proposed for water remediation, especially for treating textile and industrial wastewater. However, state-of-the-art membranes are easily fouled by pollutant adsorption that impacts their reusability. Here we report the development of a crosslinked electrospun poly-cyclodextrin (Poly-CD) nanofiber (NF) membrane coated by atomic layer deposition (ALD) with ZnO nanograins for the removal of pollutants from wastewater. The inherent high affinity of poly-CD NFs favored the selective adsorption of cationic impurities, and the reactive oxygen species produced by photoirradiation of the ZnO surface effectively degraded adsorbed contaminants. The NFMs has signifies that, even under the dark, they have a removal efficiency of around 80% which may be due to the high adsorption nature. Further, these NFM are highly reusable while decorating the ZnO nanograins on the NFM, which degraded the adsorbed pollutant and opened up the active site to further adsorb the dye molecule on the poly-CD surface. Under the static mode, the ZnO(100)@poly-CD NFM achieved the highest MB removal efficiency of 94.3%, followed by ZnO(25)@poly-CD, ZnO(200)@poly-CD, and poly-CD, which had removal rates of 91.3%, 87.7%, and 83.1%, respectively in 120 min of photoirradiation. Modulating the photocatalytic reaction in a flow channel, ZnO(100)@poly-CD nanofibrous membranes (NFMs) achieved 2.19-fold higher removal efficiencies (98.6% in 60 min) in a flow-through filtration system than under static conditions (a non-filtration method). Furthermore, the flow-through mode promoted the mass transfer of pollutants through NFMs, which increased reactive oxygen species production by inhibiting electron-hole recombination. Furthermore, the inherent self-cleaning function conferred by the photocatalytic activity of surface ZnO increased membrane structural stability and provided a faster removal rate.
dc.embargo.release2025-11-15
dc.identifier.doi10.1016/j.memsci.2023.122002
dc.identifier.eissn1873-3123
dc.identifier.issn0376-7388
dc.identifier.urihttps://hdl.handle.net/11693/114815
dc.language.isoen
dc.publisherElsevier
dc.relation.isversionofhttps://doi.org/10.1016/j.memsci.2023.122002
dc.rightsCC BY-NC-ND 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.tr
dc.source.titleJournal of Membrane Science
dc.subjectAtomic layer deposition
dc.subjectCationic dye adsorption
dc.subjectElectrospinning
dc.subjectNanofibers
dc.subjectPhotodegradation
dc.subjectPoly-cyclodextrin
dc.subjectZnO
dc.titleMembrane based electrospun poly cyclodextrin nanofibers coated with ZnO nanograins by ALD Ultrafiltration blended photocatalysis for degradation of organic micropollutants
dc.typeArticle

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