Ti3+ doped anodic single-wall TiO2 nanotubes as highly efficient photocatalyst
ČlánekOtevřený přístuppeer-reviewedpostprintDatum publikování
2019-11-27
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Elsevier
Abstrakt
In this work, a two-step treatment of TiO2 nanotube (TNT) layers towards enhanced photocatalytic performance is presented. TNT layers with a thickness of ~7 µm and an average inner diameter of ~190 nm were prepared via electrochemical anodization of Ti foil in a fluoride containing ethylene glycol-based electrolyte. To improve the photocatalytic activity of the produced TNT layers a two-step post-treatment was conducted. First, the inner shell of the native double-wall TNT layers was removed via a mild pre-annealing followed by a selective etching treatment of the inner shell in piranha solution yielding single-wall TNT layers. Second, reduction via annealing in H2/Ar atmosphere was performed. The resulting Ti3+ doped single-wall TNT layers possess 100% enhancement of photocatalytic activity compared to their non-treated counterparts.
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0013-4686
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Projekt
EC/H2020/638857/EU/Towards New Generation of Solid-State Photovoltaic Cell: Harvesting Nanotubular Titania and Hybrid Chromophores/CHROMTISOL
Zdrojový dokument
Electrochimica Acta 2019
Vydavatelská verze
https://www.sciencedirect.com/science/article/pii/S0013468619322467?via%3Dihub
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Attribution-NonCommercial-NoDerivs 3.0 Czech Republic
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TiO2 nanotube layers, single-wall, H2 surface reduction, photoelectrochemistry, photocatalysis
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Except where otherwised noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Czech Republic