Synthesis and Photocatalytic Properties of the Bi₂MoO₆ and Bi₂WO₆ Photocatalysts

Abstract:

Two different Bi-based semiconductor photocatalysts Bi₂MoO₆ and Bi₂WO₆ were synthesized by a simple one-pot hydrothermal reaction at 453 K for 10 h. The properties of the photocatalysts, including structures, morphology, light-absorption band and photoluminescence, etc were characterized by X-ray diffraction, scanning electron microscopy, UV-Vis diffuse reflectance spectrum and fluorescence spectrum. Further, their photocatalytic properties were compared by the degradation of two different organic dyes: Rhodamine B and methylene blue. It is important to note that the Bi₂WO₆ nanoplate structure exhibited better photocatalytic activity than the Bi₂MoO₆ nanowires aggregates due to its high surface area, higher light absorption and lower recombination of electron-hole pairs.

• Periodical: Key Engineering Materials (Volume 768)
• Pages: 218-223
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.768.218
• Online since: April 2018
• Authors: Juan Xia*, Lin Zhang, Qi Wang
• Keywords: Bismuth Molybdate, Bismuth Tungstate, Hydrothermal, Photocatalytic

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