期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 140, 期 1, 页码 398-404出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2013.03.055
关键词
Composite materials; Semiconductors; X-ray photo-emission spectroscopy (XPS); Electron microscopy (STEM, TEM and SEM)
资金
- National Natural Science Foundation of China [21274082, 21073115]
- Program for New Century Excellent Talents in University of China [NCET-10-0926]
- Program for the Top Young and Middle-aged Innovative Talents of Shanxi province (TYMIT)
The particles of TiO2 modified with various amounts of SnS2 nanoparticles (TiO2/SnS2) were synthesized via the hydrothermal method by reacting SnCl4 center dot 5H(2)O with thioacetamide in 5% (vol.) acetic acid aqueous solution in the presence of TiO2. The obtained products were characterized by using X-ray diffraction, Xray photoelectron spectroscopy, UV-Vis diffuse reflection spectra, scanning and transmission electron microscopy. The photodegradation activities of TiO2/SnS2 composites have been investigated by using methyl orange as target in water under the light irradiation of 250-400, 360-600 and 400-600 nm. It was found that the photodegradation activity of TiO2/SnS2 composites depended on the mass ratio of SnS2 and the wavelength of the irradiating light. The composites containing 33% SnS2 exhibited the maximum activity under the light irradiation of 250-400 and 360-600 nm. However, the more SnS2 in the composites, the higher activity appeared under the irradiation of 400-600 nm light. All the results reveal that the composites possess much better activity than the pristine TiO2 (C) 2013 Elsevier B.V. All rights reserved.
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