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Journal of Sol-Gel Science and Technology

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01-08-2013 | Original Paper

Comparison of optical and structural properties of nanostructure TiO₂ thin film doped by Sn and Nb

Author: Behzad Koozegar Kaleji

Published in: Journal of Sol-Gel Science and Technology | Issue 2/2013

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Abstract

The thin films of TiO₂ doped by Sn or Nb were prepared by sol–gel method under process control. The effects of Sn and Nb doping on the structural, optical and photo-catalytic properties of applied thin films have been studied by X-ray diffraction (XRD) high resolution transmission electron microscopy and UV–Vis absorption spectroscopy. Surface chemical state of thin films was examined by atomic X-ray photoelectron spectroscopy. XRD results suggest that adding impurities has a great effect on the crystallinity and particle size of TiO₂. Titania rutile phase formation in thin film was promoted by Sn⁴⁺ addition but was inhibited by Nb⁵⁺ doping. The activity of the photocatalyst was evaluated by photocatalytic degradation kinetics of aqueous methylene blue under UV and Visible radiation. The results show that the photocatalytic activity of the Sn-doped TiO₂ thin film have a larger degradation efficiency than Nb-doped TiO₂ under visible light, but under UV light photocatalytic activity of the Nb-doped TiO₂ thin film is better.

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Title: Comparison of optical and structural properties of nanostructure TiO2 thin film doped by Sn and Nb
Author: Behzad Koozegar Kaleji
Publication date: 01-08-2013
Publisher: Springer US
Published in: Journal of Sol-Gel Science and Technology / Issue 2/2013
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-013-3082-x

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