Preparation and Photocatalytic Property of Cubic WO₃

Abstract:

The cubic WO₃ powder was prepared by sol-gel method with WCl₆ as the soure of tungsten and P₁₂₃ as the structure-directing agent. The crystalline phase and microstructure of the powder were characterized through TG-DSC, XRD and SEM techniques, respectively. It was found the powder annealed at 250°C for 4h mainly was cubic WO₃ with a little monoclinic phase. The SEM micrographs revealed the powder has a petal shape with about 200 nm mean particle diameter. The photocatalytic activity of the powder was evaluated by methyl orange as mode compound to photocatalytic degradation under UV light irradiation. The results show the cubic WO₃ powder has much higher photocatalytic activity than the monoclinic phase.

• Periodical: Advanced Materials Research (Volume 1081)
• Pages: 304-307
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1081.304
• Online since: December 2014
• Authors: Fu Liang Shang*, Hai Tao Yang, Ling Gao
• Keywords: Cubic, Photocatalytic, Structure, WO₃

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