Investigation of photocatalytic activity of TiO2 nanotubes synthesized by hydrothermal method

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dc.authoridKarakurt, Huseyin/0000-0002-0305-7315
dc.contributor.authorKarakurt, Huseyin
dc.contributor.authorKartal, Ozlem Esen
dc.date.accessioned2024-08-04T20:52:13Z
dc.date.available2024-08-04T20:52:13Z
dc.date.issued2023
dc.departmentİnönü Üniversitesien_US
dc.description.abstractTiO2 nanotubes were synthesized by hydrothermal reaction using commercially available TiO2 powder at 150 degrees C for 24 h. The transmission electron microscopy, X-ray diffraction, nitrogen adsorption-desorption isotherms and Fourier Transform-Infrared spectroscopy were used to characterize the nanotubes. Anatase phase was not transformed into rutile phase in the range of calcination temperature studied. Increase in calcination temperature result in enhancement of crystallinity and reduction in BET surface area. Photocatalytic removal of Reactive Red 239 (RR239) was investigated using prepared TiO2 nanotubes. Effects of pH, TiO2 nanotube dosage, initial RR239 concentration and calcination temperature were studied. 99%, 97% and 55% of removal efficiency values were attained at pH = 3, 5 and 7, respectively within 60 min or reaction time. With an increase in dosage of TiO2 nanotube in the range of 0.25-0.75 g dm(-3), removal rate increased by a steeper slope. Complete removal of RR239 was observed at 20 mg dm(-3) RR239 concentrations within 30 min but longer time was required for complete removal at higher concentrations. Langmuir-Hinshelwood kinetic expression was proposed based on nonlinear regression analysis. The removal efficiency of nanotubes calcined at 300 - 450 degrees C significantly increased but further increase in calcination temperature caused to decrease the efficiency.100% and 85% removal efficiency values were observed using actual solar light within 120 min of reaction time in July and January, respectively. Experiments conducted with scavengers showed that holes and adsorbed hydroxyl radicals were the major species involved in removal of RR239. A pathway for degradation of RR239 was suggested according to detected intermediate compounds.en_US
dc.description.sponsorshipScientific Research Projects Coordination Unit of Inonu University under BAP [2014/08]en_US
dc.description.sponsorshipThis study was financially supported by Scientific Research Projects Coordination Unit of Inonu University under BAP grant number 2014/08.en_US
dc.identifier.doi10.1080/00986445.2022.2103683
dc.identifier.endpage1403en_US
dc.identifier.issn0098-6445
dc.identifier.issn1563-5201
dc.identifier.issue8en_US
dc.identifier.scopus2-s2.0-85135193659en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage1383en_US
dc.identifier.urihttps://doi.org/10.1080/00986445.2022.2103683
dc.identifier.urihttps://hdl.handle.net/11616/100814
dc.identifier.volume210en_US
dc.identifier.wosWOS:000832954600001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.ispartofChemical Engineering Communicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDegradation intermediatesen_US
dc.subjecthydrothermal methoden_US
dc.subjectmineralizationen_US
dc.subjectphotocatalytic oxidationen_US
dc.subjectReactive Red 239en_US
dc.subjectsolar lighten_US
dc.subjectTiO2 nanotubesen_US
dc.titleInvestigation of photocatalytic activity of TiO2 nanotubes synthesized by hydrothermal methoden_US
dc.typeArticleen_US

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