Atomic Layer Deposition Al2O3 coatings significantly improve thermal, chemical and mechanical stability of anodic TiO2 nanotube layers

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dc.contributor.author Zazpe, Raul
dc.contributor.author Přikryl, Jan
dc.contributor.author Gärtnerová, Viera
dc.contributor.author Nechvílová, Kateřina
dc.contributor.author Beneš, Ludvík
dc.contributor.author Střižík, Lukáš
dc.contributor.author Jäger, Aleš
dc.contributor.author Bosund, Markus
dc.contributor.author Sopha, Hanna
dc.contributor.author Macák, Jan M.
dc.date.accessioned 2017-03-23T10:14:26Z
dc.date.available 2017-03-23T10:14:26Z
dc.date.issued 2017-03-14
dc.identifier.issn 1520-5827
dc.identifier.issn 0743-7463
dc.identifier.uri http://hdl.handle.net/10195/66922
dc.description.abstract We report on a very significant enhancement of the thermal, chemical, and mechanical stability of self-organized TiO2 nanotubes layers, provided by thin Al2O3 coatings of different thicknesses prepared by atomic layer deposition (ALD). TiO2 nanotube layers coated with Al2O3 coatings exhibit significantly improved thermal stability as illustrated by the preservation of the nanotubular structure upon annealing treatment at high temperatures (870 °C). In addition, a high anatase content is preserved in the nanotube layers against expectation of the total rutile conversion at such a high temperature. Hardness of the resulting nanotube layers is investigated by nanoindentation measurements and shows strongly improved values compared to uncoated counterparts. Finally, it is demonstrated that Al2O3 coatings guarantee unprecedented chemical stability of TiO2 nanotube layers in harsh environments of concentrated H3PO4 solutions. eng
dc.format p. 3208-3216 eng
dc.language.iso eng eng
dc.publisher American Chemical Society cze
dc.relation.ispartof Langmuir. 2017, vol. 33, issue 13
dc.rights Attribution-NonCommercial-NoDerivs 4.0 *
dc.rights embargoed access eng
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0 *
dc.subject TiO2 eng
dc.subject nanotubes eng
dc.subject Al2O3 coating eng
dc.subject ALD eng
dc.subject stability eng
dc.title Atomic Layer Deposition Al2O3 coatings significantly improve thermal, chemical and mechanical stability of anodic TiO2 nanotube layers eng
dc.type Article eng
dc.peerreviewed yes eng
dc.publicationstatus postprint eng
dc.identifier.doi 10.1021/acs.langmuir.7b00187
dc.relation.publisherversion http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.7b00187
dc.project.ID EC/H2020/638857/EU/Towards New Generation of Solid-State Photovoltaic Cell: Harvesting Nanotubular Titania and Hybrid Chromophores/CHROMTISOL
dc.identifier.scopus 2-s2.0-85016941759


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