Fabrication of Bi-Doped TiO2 Spheres with Ultrasonic Spray Pyrolysis and Investigation of Their Visible-Light Photocatalytic Properties

Autor: Jianhui Huang, Wahkit Cheuk, Yifan Wu, Frank S. C. Lee, Wingkei Ho
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Journal of Nanotechnology, Vol 2012 (2012)
Druh dokumentu: article
ISSN: 1687-9503
1687-9511
DOI: 10.1155/2012/214783
Popis: Bismuth-doped TiO2 submicrospheres 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.
Databáze: Directory of Open Access Journals
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