Visible Light Photocatalytic Properties of Metastable γ-Bi2O3 with Different Morphologies

doi:10.1016/j.jmst.2013.09.023

Abstract

Abstract:

The metastable γ-Bi₂O₃ photocatalysts with different morphologies were fabricated by means of a chemical precipitation method. The microstructure of as-prepared samples was characterized by X-ray diffraction, transmission electron microscopy and ultraviolet-visible diffusion reflectance spectroscopy. The photocatalytic performance of Bi₂O₃ powder was evaluated using rhodamine B as a model pollutant under visible light irradiation. The visible light photocatalytic activity of Bi₂O₃ with different morphologies is as follows, nanorod > nanorod/nanoflake > N doped TiO₂ > irregular particle > agglomerated particle. The γ-Bi₂O₃ shows the best photocatalytic performance and it can effectively degrade 97% RhB within 60 min.

Key words: γ-Bi₂O₃, Visible light, Photocatalytic properties, Morphology

Weichang Hao, Yuan Gao, Xi Jing, Wen Zou, Yan Chen, Tianmin Wang. Visible Light Photocatalytic Properties of Metastable γ-Bi₂O₃ with Different Morphologies[J]. J. Mater. Sci. Technol., DOI: 10.1016/j.jmst.2013.09.023.

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Visible Light Photocatalytic Properties of Metastable γ-Bi₂O₃ with Different Morphologies

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