Synergistic effect of bi-phased and self-doped Ti+3 on anodic TiO2 nanotubes photoelectrode for photoelectrochemical sensing

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dc.authoridChahrour, Khaled M. N./0000-0002-8799-3468
dc.authoridMadkour, Metwally/0000-0002-4615-414X
dc.authoridAbdel-Nazeer, Ahmed/0000-0003-3886-1511
dc.contributor.authorChahrour, Khaled M.
dc.contributor.authorOoi, Poh Choon
dc.contributor.authorEid, A. M.
dc.contributor.authorNazeer, Ahmed Abdel
dc.contributor.authorMadkour, Metwally
dc.contributor.authorDee, Chang Fu
dc.contributor.authorWee, M. F. Mohd Razip
dc.date.accessioned2024-09-29T15:57:26Z
dc.date.available2024-09-29T15:57:26Z
dc.date.issued2022
dc.departmentKarabük Üniversitesien_US
dc.description.abstractInclusive detection of organic compounds in aqueous solutions is a promising yet challenging approach for photoelectrochemical (PEC) sensors. In this work, the combined factors of crystalline phase change and Ti3+ self-doping were introduced to some fabricated anodic TiO2 nanotubes (ATNTs) to improve their efficacy as potential PEC sensors. Several TiO2 electrodes were effectively fabricated according to the variation of the factors as mentioned above via dual-step anodization process of a Ti foil, followed by high-temperature annealing under a hydrogen reduction atmosphere. As evidenced by XPS and wettability tests, oxygen vacancies were created in the crystalline lattice of TiO2 nanotubes as shallow donors' levels which boosted the electronic conductivity of ATNTs. This enhancement in the electronic conductivity was endorsed and assessed by photoelectrochemical (PEC) properties performance testing. The PEC performance results indicated that bi-phased (anatase and rutile) Ti3+-ATNTs photo-electrode annealed at 600 degrees C under hydrogen reduction synergistically prompted the photoelectrochemical activity. In addition, their corresponding photocurrent was 2-fold greater than that of the other fabricated ATNTs photo-electrodes. Most prominently, the bi-phased Ti3+- ATNTs photo-electrode degraded more minor concentrations of organic solutions with a broader linear detection range. This recommends that the bi-phase Ti3+- ATNTs photo-electrode may serve as a robust sensor for the PEC identification of selective organic solutions under solar light irradiation. These designed PEC sensors have demonstrated their promising feasibility and selectivity for glucose, KHP, succinic acid, and malonic acid; hence this suggests their bright future in detecting biomedical samples for clinical diagnosis. (C) 2021 Published by Elsevier B.V.en_US
dc.description.sponsorshipMinistry of Higher Education (MOHE) Malaysia; Institute of Microengineering and Nanoelectronics (IMEN) , Universiti Kebangsaan Malaysia; RSPU at Kuwait University [SC 03/01]en_US
dc.description.sponsorshipThe authors would like to gratefully thank the Ministry of Higher Education (MOHE) Malaysia to support this research by granting AKU 254: HICoE (Fasa II) MEMS for Biomedical Devices (Artificial Kidney) and the first author expresses gratitude to the Institute of Microengineering and Nanoelectronics (IMEN) , Universiti Kebangsaan Malaysia for awarding the Post-Doctoral Researcher. Also, RSPU at Kuwait University was acknowledged for the XPS measurements via project No. SC 03/01.en_US
dc.identifier.doi10.1016/j.jallcom.2021.163496
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-85121906948en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2021.163496
dc.identifier.urihttps://hdl.handle.net/20.500.14619/4813
dc.identifier.volume900en_US
dc.identifier.wosWOS:000749691200001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal of Alloys and Compoundsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAnodizationen_US
dc.subjectTiO2 nanotubesen_US
dc.subjectHydrogenationen_US
dc.subjectPhotoelectrochemicalen_US
dc.subjectChemical sensingen_US
dc.titleSynergistic effect of bi-phased and self-doped Ti+3 on anodic TiO2 nanotubes photoelectrode for photoelectrochemical sensingen_US
dc.typeArticleen_US

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