Hydrothermal preparation and visible-light photocatalytic activity of Bi{sub 2}WO{sub 6} powders

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.04.003· OSTI ID:20725985

Jiaguo, Yu ^[1]; Jianfeng, Xiong ^[1]; Bei, Cheng ^[1]; Ying, Yu ^[2]; Jianbo, Wang ^[3]

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1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)
2. College of Physical Science and Technology, Central China Normal University, Wuhan 430079 (China)
3. Center for Electron Microscopy, Wuhan University, Wuhan 430072 (China)

Bi{sub 2}WO{sub 6} powder photocatalyst was prepared using Bi(NO{sub 3}){sub 3} and Na{sub 2}WO{sub 4} as raw materials by a simple hydrothermal method at 150 deg. C for 24h, and then calcined at 300, 400, 500, 600 and 700 deg. C for 2h, respectively. The as-prepared samples were characterized with UV-visible diffuse reflectance spectra, fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and N{sub 2} adsorption-desorption measurement. The photocatalytic activity of the samples was evaluated using the photocatalytic oxidation of formaldehyde at room temperature under visible light irradiation. It was found that post-treatment temperature obviously influenced the visible-light photocatalytic activity and physical properties of Bi{sub 2}WO{sub 6} powders. At 500 deg. C, Bi{sub 2}WO{sub 6} powder photocatalyst showed the highest visible-light photocatalytic activity due to the samples with good crystallization and high BET surface area.

• OSTI ID: 20725985
• Journal Information: Journal of Solid State Chemistry, Vol. 178, Issue 6; Other Information: DOI: 10.1016/j.jssc.2005.04.003; PII: S0022-4596(05)00149-0; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BISMUTH NITRATES
CRYSTALLIZATION
DESORPTION
FORMALDEHYDE
FOURIER TRANSFORMATION
INFRARED SPECTRA
OXIDATION
PHYSICAL PROPERTIES
POWDERS
SCANNING ELECTRON MICROSCOPY
SODIUM TUNGSTATES
TEMPERATURE RANGE 0273-0400 K
TUNGSTEN COMPOUNDS
VISIBLE RADIATION
X-RAY DIFFRACTION