Characterization studies of heat-treated halloysite nanotubes

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dc.authorid0000-0002-6699-666Xen_US
dc.contributor.authorAytekin, M. Turkay
dc.contributor.authorHoşgün, Halit Levent
dc.date.accessioned2021-03-20T20:09:24Z
dc.date.available2021-03-20T20:09:24Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Kimya Mühendisliği Bölümüen_US
dc.description.abstractThe halloysite nanotubes (HNTs), subjected to different temperatures in the range 250-1000 degrees C, were investigated at room temperature. The materials have been prepared in various times (2, 4, 6 h) at different temperatures (250, 450, 600, and 1000 degrees C) and heating rates (5, 10, 20 degrees C/min). Morphology, structural and physical properties of raw, and thermally treated HNTs were systematically analyzed by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), the nitrogen adsorption-desorption isotherm (BET), as well as Fourier transform infrared (FT-IR) spectroscopy. The XRD patterns indicate that the crystal structure of halloysite is stable up to 450 degrees C. The scanning electron micrograph images of the Halloysite nanotubes showed that the unheated and heated halloysite nanotubes possessed typical tubular shapes. Tubular shapes were observed even at 1000 degrees C. Fourier transform infrared spectroscopy was also used to examine the variations of chemical structures. The Fourier transform infrared spectra of unheated and thermally treated halloysite nanotubes showed the presence of hydroxyl stretching and bending vibration frequencies in the samples. In this study, the structural properties of natural halloysite nanotubes are comprehensively reviewed in terms of given temperature, heating rate, and time. It is thought that the obtained results will guide the design and preparation of halloysite-based new structural and functional materials which can be applicable in various fields.en_US
dc.identifier.doi10.1007/s11696-020-01263-6en_US
dc.identifier.endpage4557en_US
dc.identifier.issn2585-7290
dc.identifier.issn1336-9075
dc.identifier.issue12en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage4547en_US
dc.identifier.urihttp://doi.org/10.1007/s11696-020-01263-6
dc.identifier.urihttps://hdl.handle.net/20.500.12885/402
dc.identifier.volume74en_US
dc.identifier.wosWOS:000544155400001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorHoşgün, Halit Levent
dc.language.isoenen_US
dc.publisherSpringer International Publishing Agen_US
dc.relation.ispartofChemical Papersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHalloysiteen_US
dc.subjectNanotubeen_US
dc.subjectHeat treatmenten_US
dc.subjectInfrareden_US
dc.subjectCharacterizationen_US
dc.titleCharacterization studies of heat-treated halloysite nanotubesen_US
dc.typeArticleen_US

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Kimya Mühendisliği Bölümü Yayın Koleksiyonu
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