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Synthesis and visible light photocatalytic behavior of WO3 (core)/Bi2WO6 (shell)
Ist Teil von
Journal of molecular catalysis. A, Chemical, 2014-04, Vol.385, p.106-111
Ort / Verlag
Amsterdam: Elsevier B.V
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
•WO3 (core)/Bi2WO6 (shell) photocatalysts were synthesized.•The Bi2WO6 shells have evenly been deposited over the WO3 cores.•Results showed that RhB can be decomposed using a 4W LED lamp as visible light.•WO3/Bi2WO6 samples show a remarkably higher photocatalytic activity than pure WO3.•The mechanism for the efficient photocatalytic activity of WO3/Bi2WO6 is discussed.
WO3 (core)/Bi2WO6 (shell) photocatalysts were fabricated via a hydrothermal reaction followed by heat treatment, and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM–EDX), UV–vis diffuse reflection spectra (DRS), and photoluminescence spectra (PL). The photocatalytic activities of WO3/Bi2WO6 samples with capped geometries were tested by the oxidation of the rhodamine B using a 4W white-luminescence light emitting diode (LED) lamp as the visible light source, and all WO3/Bi2WO6 samples show the remarkably greater photocatalytic activity than the pure WO3 sample. The possible mechanism for the enhanced photocatalytic performance of the WO3/Bi2WO6 samples is discussed.