Electrical and VOC sensing properties of anatase and rutile TiO2 nanotubes

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dc.authorid0000-0002-5818-9737
dc.authorid0000-0003-2123-2938
dc.contributor.authorSennik, Erdem
dc.contributor.authorKilinc, Necmettin
dc.contributor.authorOzturk, Zafer Ziya
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2014
dc.departmentNiğde ÖHÜ
dc.description.abstractThe dc electrical and volatile organic compound (VOC) sensing properties of TiO2 nanotubes in both anatase and rutile phases were investigated. TiO2 nanotube arrays were obtained in aqueous HF (0.5 wt.%) electrolytes by anodizing of Ti thin films that deposited on quartz substrates using thermal evaporation. Anodization was performed at 10 V in aqueous HF at 0 degrees C. Then the fabricated TiO2 nanotubes were annealed at 300 degrees C and at 700 degrees C under dry air for 5 h to obtain anatase and rutile phases, respectively. The TiO2 nanotubes were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) as structural, and UV-vis spectrophotometer as optical. The current voltage characteristics of the nanotubes under dry air flow revealed that the conductivity of the sample with anatase phase was higher than that of the sample with rutile phase. The VOCs sensing properties of the nanotubes were investigated at 200 degrees C. It was found that the sensor response of anatase was higher than that of rutile for almost all VOC gases. On the other hand, the sensitivities of two sensors are the highest for isopropyl alcohol. (C) 2014 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [111M261, 113F403]
dc.description.sponsorshipThis work has been funded by The Scientific and Technological Research Council of Turkey (TUBITAK), Project Number: 111M261 and 113F403. The authors thank KUYTAM and Dr. Baris Yagci for SEM measurements.
dc.identifier.doi10.1016/j.jallcom.2014.07.097
dc.identifier.endpage96
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-84905568310
dc.identifier.scopusqualityQ1
dc.identifier.startpage89
dc.identifier.urihttps://dx.doi.org/10.1016/j.jallcom.2014.07.097
dc.identifier.urihttps://hdl.handle.net/11480/4088
dc.identifier.volume616
dc.identifier.wosWOS:000342654000014
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherELSEVIER SCIENCE SA
dc.relation.ispartofJOURNAL OF ALLOYS AND COMPOUNDS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectNanostructured materials
dc.subjectElectrical transport
dc.subjectNanofabrications
dc.subjectTiO2 nanotube
dc.subjectChemoresistive sensor
dc.titleElectrical and VOC sensing properties of anatase and rutile TiO2 nanotubes
dc.typeArticle

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