Fabrication of Bi-DopedT iO 2 Spheres with Ultrasonic Spray Pyrolysis and Investigation of Their Visible-Light Photocatalytic Properties
Author(s) -
Jianhui Huang,
Wahkit Cheuk,
Yifan Wu,
Shuncheng Lee,
Wingkei Ho
Publication year - 2012
Publication title -
journal of nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.347
H-Index - 29
eISSN - 1687-9511
pISSN - 1687-9503
DOI - 10.1155/2012/214783
Subject(s) - materials science , x ray photoelectron spectroscopy , bismuth , photocatalysis , doping , analytical chemistry (journal) , scanning electron microscope , transmission electron microscopy , spectroscopy , powder diffraction , nuclear chemistry , crystallography , nanotechnology , nuclear magnetic resonance , optoelectronics , physics , chemistry , composite material , chromatography , organic chemistry , metallurgy , catalysis , quantum mechanics
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.Department of Civil and Environmental EngineeringAuthor name used in this publication: Frank S. C. Le
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