The photocatalytic properties of amorphous TiO2 composite films deposited by magnetron sputtering

The photocatalytic properties of amorphous TiO2 composite films deposited by magnetron sputtering The preparation of amorphous TiO2 film coupled with various metal-oxide semiconductors and their photocatalytic activities evaluated by photo-degradation of methylene blue and rhodamine B aqueous solution are briefly reviewed. The proposed photoreaction mechanism of the amorphous composite semiconductor and the differences between amorphous TiO2-based films and crystalline TiO2 photocatalytic materials in terms of preparation and usage are addressed. The inactive intrinsic amorphous TiO2 film coupled with various metal oxides were found to gain high photocatalytic activity. These dopants induce forming new energy levels in the band gap of TiO2 to enhance the charge separation of the photoinduced electrons and holes and extend the light absorption of TiO2-based photocatalytic films into the visible region. In addition, two different effects of coupling metal oxides have been proved: the introduction of oxides of W, Cr, V, Ag, and Mo can significantly increase the photo-reactivity of amorphous TiO2 film, while the combination of oxides of Zr, Sn, Sb, Cu, Ta, Fe, and Ni cannot affect the inactivity of pure amorphous TiO2 film. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

The photocatalytic properties of amorphous TiO2 composite films deposited by magnetron sputtering

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Publisher
Springer Netherlands
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-011-0365-0
Publisher site
See Article on Publisher Site

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