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Title: Fabrication of Bi-doped TiO₂ spheres with ultrasonic spray pyrolysis and investigation of their visible-light photocatalytic properties
Authors: Huang, J 
Cheuk, W
Wu, Y
Lee, SC 
Ho, W
Issue Date: 2012
Source: Journal of nanomaterials, v. 2012, 214783, p. 1-7
Abstract: Bismuth-doped TiO₂submicrospheres were synthesized by ultrasonic spray pyrolysis. The prepared bismuth-doped titania was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible diffuse reflectance spectroscopy (UV-vis DRS), and X-ray photoelectron spectroscopy (XPS). Aqueous photocatalytic activity was evaluated by the decomposition of methyl orange under visible-light irradiation. The results indicate that doping of bismuth remarkably affects the phase composition, crystal structure, and the photocatalytic activity. The sample with 2 Bi exhibits the optimum photocatalytic activity.
Keywords: Azo dyes
Scanning electron microscopy
Spray pyrolysis
Titanium dioxide
Transmission electron microscopy
X ray diffraction
X ray photoelectron spectroscopy
Publisher: Hindawi Publishing Corporation
Journal: Journal of nanomaterials 
ISSN: 1687-4110
EISSN: 1687-4129
DOI: 10.1155/2012/214783
Rights: Copyright © 2012 Jianhui Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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