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, Lee, Frank S. C., Wingkei Ho
Předmět:	TITANIUM dioxide MICROFABRICATION PYROLYSIS ULTRASONICS PHOTOCATALYSIS BISMUTH X-ray diffraction CHEMICAL decomposition CRYSTAL structure
Zdroj:	Journal of Nanotechnology; 2012, p1-7, 7p
Abstrakt:	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. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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