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Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye

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2020
Authors
Bjelajac, Anđelika
Petrović, Rada
Vujančević, Jelena
Veltruska, Katerina
Matolin, Vladimir
Siketić, Zdravko
Provatas, George
Jakšić, Milko
Stan, George E.
Socol, Gabriel
Mihailescu, Ion N.
Janaćković, Đorđe
Article (Published version)
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Abstract
We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F–SnO2 (FTO) glass. Annealing was carried out at 500 °C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO2 nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes’ surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in... the degradation of methyl orange dye under visible light.

Keywords:
nanostructures / photoelectron spectroscopy / thin films
Source:
Journal of Physics and Chemistry of Solids, 2020, 147, 109609-
Publisher:
  • Elsevier
Projects:
  • Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-200287)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
  • CERIC-ERIC (20177018 proposal)
  • Structure Fund Project CZ.02.1.01/0.0/0.0/16_013/0001788
  • UEFISCDI, 304/2011
  • NIMP Core Programme 21 N
Note:
  • Peer-reviewed manuscript: https://dais.sanu.ac.rs/123456789/9541

DOI: 10.1016/j.jpcs.2020.109609

ISBN: 0022-3697

WoS: 000567084700005

Scopus: 2-s2.0-85088148922
[ Google Scholar ]
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URI
http://www.sciencedirect.com/science/article/pii/S0022369719328525
https://dais.sanu.ac.rs/123456789/9540
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  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences SASA

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