Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8842
Title: Aerosol-assisted flow synthesis of WxTi1-xO 2 solid solution spheres with enhanced photocatalytic activity
Authors: Ai, Z
Song, X
Huang, Y
Zhang, L
Lee, S 
Keywords: Photocatalysis
Solid solution
TiO2
Tungsten
Issue Date: 2011
Publisher: North-Holland
Source: Applied surface science, 2011, v. 257, no. 10, p. 4725-4730 How to cite?
Journal: Applied surface science 
Abstract: In this paper, WxTi1-xO2 solid solutions (x = 0.000, 0.005, 0.010, 0.015, and 0.020) microspheres were synthesized with an aerosol-assisted flow synthesis method. The resulting samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen sorption, UV-vis diffuse reflectance spectrum (DRS) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activities of the as-prepared catalysts were measured by the degradation of rhodamine B (RhB) under visible light irradiation (λ ≥ 420 nm). All the solid solutions exhibited higher photocatalytic activities than pure TiO2 and the W0.015Ti0.985O2 solid solution possessed the highest photocatalytic activity. The degradation constant of RhB on W0.015Ti0.985O2 solid solution catalyst was about 15 times of that of the pure TiO2 and 25 times of that of Degussa P25, respectively. This study provides an effective method to prepare visible light photocatalysts on a large scale.
URI: http://hdl.handle.net/10397/8842
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2010.12.145
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