Photocatalytic properties of TiO2 nanotubes doped with Ag, Au and Pt or covered by Ag, Au and Pt nanodots

Enachi Mihail; Guix Maria; Braniste Tudor; Postolache Vitalie; Ciobanu Vladimir; Ursachi Veaceslav; Schmidt Oliver; Tiginyanu Ion

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2020-10-02 12:53

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ENACHI, Mihail, GUIX, Maria, BRANISTE, Tudor, POSTOLACHE, Vitalie, CIOBANU, Vladimir, URSACHI, Veaceslav, SCHMIDT, Oliver, TIGINYANU, Ion. Photocatalytic properties of TiO2 nanotubes doped with Ag, Au and Pt or covered by Ag, Au and Pt nanodots. In: Surface Engineering and Applied Electrochemistry, 2015, vol. 51, pp. 3-8. ISSN 1068-3755. DOI: https://doi.org/10.3103/S1068375515010044

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Surface Engineering and Applied Electrochemistry

Volumul 51 / 2015 / ISSN 1068-3755 /ISSNe 1934-8002

Photocatalytic properties of TiO₂ nanotubes doped with Ag, Au and Pt or covered by Ag, Au and Pt nanodots

DOI:https://doi.org/10.3103/S1068375515010044

Pag. 3-8

Enachi Mihail¹, Guix Maria², Braniste Tudor¹, Postolache Vitalie¹, Ciobanu Vladimir¹, Ursachi Veaceslav³, Schmidt Oliver², Tiginyanu Ion¹³

¹ Technical University of Moldova,
² Leibniz Institute for Solid State and Materials Reseach, Dresden,
³ Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova

Disponibil în IBN: 19 decembrie 2017

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Titania nanotube arrays have been prepared by anodic oxidation of titanium foils in an electrolyte solution containing a mixture of hydrofluoric acid, ethylene glycol, and phosphoric acid. The initially amorphous nanotubes were found to crystalize in an anatase phase upon thermal treatment at 500°C. Anatase crystalline phase showed a significant improvement in the photocatalytic properties of the prepared samples, which was evaluated by studying their efficiency towards Rhodamine B dye degradation. Additionally, the effect of doping titania nanotubes with noble metals (e.g. Ag, Pt, and Au), or covering their surface with noble metal nanoparticles, was studied regarding their capabilities towards the photocatalytic degradation of Rhodamine B dye. A positive effect when samples were doped with Ag was revealed.

Cuvinte-cheie
doped titania nanotubes, dye degradation, photocatalysis

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