Controlled synthesis of three-dimensional hierarchical Bi{sub 2}WO{sub 6} microspheres with optimum photocatalytic activity
- College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Anhui Province of Functional Inorganic Materials Chemistry, Hefei 230039 (China)
Highlights: Black-Right-Pointing-Pointer The synthesized method is very simple. It can be widely used in the production. Black-Right-Pointing-Pointer The morphology is novel and the property is fine. Black-Right-Pointing-Pointer The formation of 3D hierarchical microsphere can be induced by changing the concentration of KNO{sub 3}. -- Abstract: Three-dimensional (3D) hierarchical Bi{sub 2}WO{sub 6} microsphere and octahedral Bi{sub 2}WO{sub 6} have been synthesized by a facile hydrothermal method using KNO{sub 3} solution and distilled water as solvent, respectively. The obtained products were characterized by X-ray diffraction, scanning electron microscopy, N{sub 2} adsorption/desorption, and UV-vis diffuse reflectance spectroscopy in detail. The concentration of KNO{sub 3} played a key role in the formation of 3D hierarchical Bi{sub 2}WO{sub 6} microspheres. A possible formation mechanism of Bi{sub 2}WO{sub 6} microsphere was proposed. The photocatalytic activity of the as-synthesized products was evaluated by monitoring the degradation of MB solution under sunlight irradiation. It was found that the photocatalytic activity of the 3D hierarchical Bi{sub 2}WO{sub 6} microsphere was superior to the octahedral Bi{sub 2}WO{sub 6}, which was attributed to the larger surface area and special hierarchical structure of Bi{sub 2}WO{sub 6} microsphere.
- OSTI ID:
- 22212417
- Journal Information:
- Materials Research Bulletin, Vol. 47, Issue 2; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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