Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 493, Issue 1-2, Pages L1-L7Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.12.046
Keywords
Semiconductor; Hydrothermal synthesis; Titanium dioxide; Photocatalysis
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Funding
- National Natural Science Foundation of China [50474071]
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Si-doped TiO2/carbon composite solid microspheres were prepared by a simple one-pot hydrothermal approach, using glucose, ammonium fluorotitaniate and ammonium fluorosilicate as raw materials. Then silica-embedded TiO2 hollow microspheres were obtained by calcination of the as-prepared precursor. Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD). Fourier transform infrared spectroscopy (FT-IR), N-2 adsorption-desorption measurement, X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectra (UV-vis DRS) were used to characterize the as-fabricated samples. Methylene blue (MB) solution was taken as the degradation model to evaluate the photocatalytic activity of the samples under ultraviolet light. The result showed that a remarkable improvement of photocatalytic activity for TiO2 hollow microspheres could be obtained by addition of silicon. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
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