Enhancing the performance of TiO2 nanotube-based hydrogen sensors through crystal structure and metal electrode

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dc.contributor.authorTasyurek, Lutfi Bilal
dc.contributor.authorIsik, Esme
dc.contributor.authorIsik, Ibrahim
dc.contributor.authorKilinc, Necmettin
dc.date.accessioned2026-06-19T06:39:55Z
dc.date.available2026-06-19T06:39:55Z
dc.date.issued2024
dc.departmentMalatya Turgut Özal Üniversitesi
dc.description.abstractIn this research, the effect of metal electrodes and crystalline phase on gas detection of titanium dioxide (TiO2) nanotube-based hydrogen (H2) sensors was investigated. TiO2 nanotubes were produced using glycerol-based electrolyte and annealed at 300 degrees C and 700 degrees C to change the anatase and rutile crystalline phases, respectively. TiO2 nanotubes were coated by platinum (Pt), palladium (Pd), gold (Au) and silver (Ag) electrodes to fabricate metal/TiO2 nanotubes Ti H2 sensor devices and then the current-voltage (I-V) characteristics were investigated at room temperature. The structural properties of TiO2 nanotubes were characterized by SEM, FE-SEM, XRD, and Raman techniques. The H2 detection properties of the sensors were examined at the 1000 ppm - 5% H2 concentration range. The crystal structure and metal electrodes are the main factors that affect the H2 sensing properties of TiO2 nanotube-based sensors. The effect of crystal forms on sensitivity was not the same as for metal electrodes. The underlying sensing mechanisms for different types of metal electrodes and crystal structures are discussed and the relevance of their sensing performance to nanotubes and electronic properties is investigated. In addition, discussion of each metal electrode and crystal structure will make important contributions to the development of H2 sensors. The Pd-coated device annealed at 700 degrees C showed the best detection performance.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipEuropean Cooperation in Science and Technology (COST), Belgium [CA20126]
dc.description.sponsorshipThe primary results of this study was presented in 23rd World Hydrogen Energy Conference (WHEC2022) . This manuscript has been prepared for the special issue printed for the WHEC2022 conference. The authors would like to thank European Cooperation in Science and Technology (COST), Belgium, Action No: CA20126 Project Title: Network for Research, innovation and product development on porous semiconductors and oxides for the WHEC2022 conference attendance support.
dc.identifier.doi10.1016/j.ijhydene.2023.08.202
dc.identifier.endpage690
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.orcid0000-0003-0607-648X
dc.identifier.scopus2-s2.0-85170436730
dc.identifier.scopusqualityQ1
dc.identifier.startpage678
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2023.08.202
dc.identifier.urihttps://hdl.handle.net/20.500.12899/5841
dc.identifier.volume54
dc.identifier.wosWOS:001141762200001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260612
dc.subjectAnodization
dc.subjectHydrogen Sensor
dc.subjectNanotubes
dc.subjectTitanium Dioxide
dc.subjectMetal Electrodes
dc.titleEnhancing the performance of TiO2 nanotube-based hydrogen sensors through crystal structure and metal electrode
dc.typeArticle

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