Self-organized TiO2 nanotubes grown on Ti substrates with different crystallographic preferential orientations: Local structure of TiO2 nanotubes vs. photo-electrochemical response

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dc.contributor.author Krbal, Milos
dc.contributor.author Sopha, Hanna
dc.contributor.author Pohl, Darius
dc.contributor.author Beneš, Ludvík
dc.contributor.author Damm, Christine
dc.contributor.author Rellinghaus, Bernd
dc.contributor.author KupčíK, Jaroslav
dc.contributor.author Bezdička, Petr
dc.contributor.author Šubrt, Jan
dc.contributor.author Macák, Jan
dc.date.accessioned 2018-02-01T07:34:38Z
dc.date.available 2018-02-01T07:34:38Z
dc.date.issued 2018-01-31
dc.identifier.issn 0013-4686
dc.identifier.uri https://hdl.handle.net/10195/69742
dc.description.abstract Here we report on structural properties and the photo-electrochemical response of annealed TiO2 nanotube layers, grown on four different Ti substrates by an identical anodization process. TiO2 nanotube layers were grown on Ti substrates by anodization in glycerol containing NH4F and water. The layers were then annealed at 400 °C for 1 hour in air. Photocurrent densities of annealed nanotubes were recorded upon irradiation with ultraviolet (UV) light at a constant potential of 0.4 V, in a 0.1 M Na2SO4 aqueous solution. Approximately, a 280 % difference in the photocurrent densities was recorded from TiO2 nanotubes fabricated from different Ti substrates. To elucidate the origin of this difference, the nanotube layers were scrutinized by Mott-Schottky measurements, X-ray diffraction (XRD) and Electron Energy Loss Spectroscopy (EELS). Inspection of the XRD patterns revealed preferential crystallographic orientations in various Ti substrates from which TiO2 nanotube layers were produced. Subsequent EELS analyses of the annealed nanotube layers disclosed significant differences in the Ti:O stoichiometry, in accordance with XRD evaluation of preferential orientation differences among used Ti substrates. cze
dc.format p. eng
dc.language.iso en cze
dc.publisher Elsevier cze
dc.relation.ispartof Electrochimica Acta. 2018, 31 January
dc.rights Attribution-NonCommercial-NoDerivs 3.0 Czech Republic *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/cz/ *
dc.subject TiO2 nanotubes cze
dc.subject Anodization cze
dc.subject Anatase cze
dc.subject Photo-current cze
dc.subject Stoichiometry cze
dc.title Self-organized TiO2 nanotubes grown on Ti substrates with different crystallographic preferential orientations: Local structure of TiO2 nanotubes vs. photo-electrochemical response cze
dc.type Article cze
dc.event
dc.peerreviewed yes eng
dc.publicationstatus postprint eng
dc.identifier.doi doi.org/10.1016/j.electacta.2018.01.113
dc.relation.publisherversion https://www.sciencedirect.com/science/article/pii/S0013468618301609
dc.project.ID EC/H2020/638857/EU/Towards New Generation of Solid-State Photovoltaic Cell: Harvesting Nanotubular Titania and Hybrid Chromophores/CHROMTISOL


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Attribution-NonCommercial-NoDerivs 3.0 Czech Republic Kromě případů, kde je uvedeno jinak, licence tohoto záznamu je Attribution-NonCommercial-NoDerivs 3.0 Czech Republic

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