Selective and efficient removal of volatile organic compounds by channel-type gamma-cyclodextrin assembly through inclusion complexation

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buir.contributor.authorUyar, Tamer
buir.contributor.authorDurgun, Engin
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage7354en_US
dc.citation.issueNumber25en_US
dc.citation.spage7345en_US
dc.citation.volumeNumber56en_US
dc.contributor.authorCelebioglu A.en_US
dc.contributor.authorIpek, S.en_US
dc.contributor.authorDurgun, Enginen_US
dc.contributor.authorUyar, Tameren_US
dc.date.accessioned2018-04-12T11:09:17Z
dc.date.available2018-04-12T11:09:17Z
dc.date.issued2017en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractCyclodextrins (CD), produced from enzymatic degradation of starch, are a form of biorenewable cyclic oligosaccharide which has an outstanding capability to form inclusion complexes with a variety of molecules including pollutants due to their toroid-shaped molecular structure. In this study, by a simple reprecipitation method, we obtained "channel-type" packing from γ-CD where CD molecules are stacked on top of each other to form long cylindrical channels. The γ-CD "channel-type" crystals have shown very effective removal of organic volatile compounds (VOCs; aniline and toluene) from the surroundings, whereas cage-type γ-CD could not entrap VOCs from the same environment. Encapsulation capability of channel-type γ-CD is at a ∼2:1 and ∼1:1 molar ratio for aniline/CD and toluene/CD, respectively. Thus, channel-type γ-CD crystals have shown higher removal efficiency for aniline compared to toluene. Channel-type γ-CD is also able to remove aniline selectively from surroundings. Additionally, computational modeling studies suggested that single γ-CD cavity can host two molecules of aniline or toluene for the complexation, yet, aniline is more insistent to make a complex with the γ-CD cavity when compared to toluene. We show that channel-type γ-CD can remove VOCs molecules (aniline and toluene) as efficiently as activated carbon. Hence, being a starch-based biorenewable cyclic oligosaccharide in the form of white powder, the use of "channel-type" γ-CD crystals could be a competitive alternative to activated carbon as an adsorbent for the VOC removal/filtering.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:09:17Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2017en
dc.identifier.doi10.1021/acs.iecr.7b01084en_US
dc.identifier.issn0888-5885
dc.identifier.urihttp://hdl.handle.net/11693/37303
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttps://doi.org/10.1021/acs.iecr.7b01084en_US
dc.source.titleIndustrial and Engineering Chemistry Researchen_US
dc.subjectActivated carbonen_US
dc.subjectCyclodextrinsen_US
dc.subjectMoleculesen_US
dc.subjectOligosaccharidesen_US
dc.subjectStarchen_US
dc.subjectTolueneen_US
dc.subjectVolatile organic compoundsen_US
dc.subjectComputational modelen_US
dc.subjectCyclic oligosaccharidesen_US
dc.subjectCylindrical channelen_US
dc.subjectEffective removalsen_US
dc.subjectEnzymatic Degradationen_US
dc.subjectInclusion complexationen_US
dc.subjectRemoval efficienciesen_US
dc.subjectReprecipitation methodsen_US
dc.subjectAnilineen_US
dc.titleSelective and efficient removal of volatile organic compounds by channel-type gamma-cyclodextrin assembly through inclusion complexationen_US
dc.typeArticleen_US

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