Amine modified electrospun PIM-1 ultrafine fibers for an efficient removal of methyl orange from an aqueous system

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buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage229en_US
dc.citation.spage220en_US
dc.citation.volumeNumber453en_US
dc.contributor.authorSatılmış, B.en_US
dc.contributor.authorUyar, Tameren_US
dc.date.accessioned2019-02-21T16:01:23Zen_US
dc.date.available2019-02-21T16:01:23Zen_US
dc.date.issued2018en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractPolymers of Intrinsic Microporosity (PIM-1) is a promising material for adsorption and separation applications. While PIM-1 displays high affinity for neutral species, it shows lack of interaction with charged molecules in an aqueous system due to non-polar nature of it. Functionalization of PIM-1 provides an advantage of tailoring the interaction ability as well as the adsorption performance of PIM-1 towards target pollutants. In this study, electrospun Polymer of Intrinsic Microporosity (PIM-1) fibrous membrane (PIM-FM) was reacted with borane dimethyl sulfide complex to obtain amine modified PIM-1 fibrous membrane (AM-PIM-FM). Furthermore, PIM-1 film, which is referred as PIM-1 dense membrane (PIM-DM), was also modified under the same conditions as a control material. Structural analyses have confirmed that nitrile groups of PIM-1 have been fully converted to amine group as a result of the reduction reaction. Average fiber diameter of parent PIM-1 fibers was found 2.3 ± 0.3 μm, and it remained almost the same after the amine modification. In addition, no physical damage has been observed on fiber structure based on the SEM analysis. Both amine modified PIM-1 dense and fibrous membranes became insoluble in common organic solvents. Before the modification, water contact angle of PIM-FM was 138 ± 2° which also remained almost the same after the modification, showing water contact angle of 131 ± 8°. The insolubility along with amine functionality make membranes promising materials for adsorption of anionic dyes from wastewater. Here, dye (i.e. Methyl Orange) removal ability of AM-PIM-FM from an aqueous system was investigated and compared with parent PIM-1 (PIM-FM) as well as dense membrane form (AM-PIM-DM). AM-PIM-FM shows extremely higher adsorption capacity than that of PIM-FM and AM-PIM-DM. The maximum adsorption capacity of AM-PIM-FM was found 312.5 mg g−1 for Methyl Orange. Langmuir isotherm model was found more favorable for the adsorption. AM-PIM-FM was employed effectively in continuous adsorption/desorption studies for several times without having any damage on fiber morphology using batch adsorption process. Furthermore, AM-PIM-FM was successfully used as a molecular filter for the removal of methyl orange from an aqueous system. The results indicate that AM-PIM-FM could be a promising adsorbent for removal of anionic molecules from an aqueous system.en_US
dc.embargo.release2020-09-30en_US
dc.identifier.doi10.1016/j.apsusc.2018.05.069en_US
dc.identifier.eissn1873-5584en_US
dc.identifier.issn0169-4332en_US
dc.identifier.urihttp://hdl.handle.net/11693/49836en_US
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.apsusc.2018.05.069en_US
dc.source.titleApplied Surface Scienceen_US
dc.subjectAmine PIM-1en_US
dc.subjectDye adsorptionen_US
dc.subjectElectrospinningen_US
dc.subjectMembraneen_US
dc.subjectNanofibersen_US
dc.subjectWastewater treatmenten_US
dc.titleAmine modified electrospun PIM-1 ultrafine fibers for an efficient removal of methyl orange from an aqueous systemen_US
dc.typeArticleen_US

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Institute of Materials Science and Nanotechnology (UNAM)
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