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TiO2 supported on SiO2 photocatalysts prepared using ultrasonic-assisted sol-gel method

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Materials Science-Poland

Abstract

TiO2-SiO2 (TiO2 supported on SiO2) photocatalysts were prepared using an ultrasonic-assisted sol-gel method. These photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and photoluminescence spectra (PL). Their photocatalytic activities were investigated by the method of methyl orange oxidation. It was found that the photocatalytic activity of TiO2-SiO2 was optimal when the molar ratio of hexadecyl trimethyl ammonium bromide to titanium butoxide was 1:10. The average crystallite size of TiO2-SiO2 was smaller than that prepared by the stirring method. Furthermore, for pure anatase phase samples, it was shown that the lower the photoluminescence intensity, the higher the photocatalytic activity.

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Authors and Affiliations

  1. Institute of Biomaterial, College of Science, South China Agricultural University, Guangzhou, 510642, Guangdong China

    X. -L. Yang, C. -J. Liu, Y. -Q. Liu, X. Li & Y. -H. Xu

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  1. X. -L. Yang
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  2. C. -J. Liu
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  3. Y. -Q. Liu
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  4. X. Li
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  5. Y. -H. Xu
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Correspondence to Y. -H. Xu.

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Yang, X.L., Liu, C.J., Liu, Y.Q. et al. TiO2 supported on SiO2 photocatalysts prepared using ultrasonic-assisted sol-gel method. Mater Sci-Pol 29, 189–194 (2011). https://doi.org/10.2478/s13536-011-0030-8

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  • DOI: https://doi.org/10.2478/s13536-011-0030-8

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