<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></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.

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

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

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

TiO2-SiO2 (TiO2 supported on SiO2) photocatalysts were prepared using an ultrasonic-assisted sol-gel method. These photocatalysts were characterized by X-ray...

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

Pubblicato online: 29 feb 2012

Pagine: 189 - 194

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

Parole chiave
TiO2-SiO2, ultrasonic-assisted, X-ray diffraction, photocatalytic property

© 2011 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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

Pubblicato online: 29 feb 2012

Pagine: 189 - 194

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

Parole chiaveTiO2-SiO2, ultrasonic-assisted, X-ray diffraction, photocatalytic property

© 2011 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
TiO2-SiO2, ultrasonic-assisted, X-ray diffraction, photocatalytic property