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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290The Preparation of C, N, S Tri-Doped TiO2 and...

The Preparation of C, N, S Tri-Doped TiO₂ and Visible-Light Photo-Degradation of Methylene Blue and Dyes

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Abstract:

The C, N, S tri-doped TiO₂with high visible-light photo-catalysis effect was successfully prepared by mixing thiourea with the self-prepared TiO₂ powder through calcining for 2h at 450°C. The TiO₂ powder was obtained by homogeneous precipitation method using the metatitanic acid instead of expensive chemical reagents contained Ti as raw material. The effect of doping materials and methods on the photo-degradation rate of methylene blue and dyes was studied. The characterizations of the doped TiO₂ were analyzed using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-visible absorption spectra (UV-vis). The results showed that this sample was the anatase TiO₂ and contained elements C, N, S. The sample exhibited a significant response to ultraviolet and visible light. In the photo-degradation experiment, the C, N, S, tridoped-TiO₂ could decolorize methylene blue and textile dyes quickly, and the photo-degradation rate of methylene blue could reach upward 98% after 3 hours under the different light sources.

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Periodical:

Advanced Materials Research (Volumes 287-290)

Pages:

1735-1743

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.287-290.1735

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Online since:

July 2011

Authors:

Yi Dong Shi, Qiong Guo, Yuan Song Xie

Keywords:

Dye, Metatitanic Acid, Methylene Blue (MB), Photo-Degradation, Tri-Doped TiO₂, Visible Light

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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