Photocatalytic activities of various pentavalent bismuthates under visible light irradiation |
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| Authors: | Takahiro Takei Rie Haramoto Nobuhiro Kumada Nobukazu Kinomura Shunsuke Nishimoto Michihiro Miyake |
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| Institution: | a Center for Crystal Science and Technology, University of Yamanashi, 7-32, Miyamae, Kofu, Yamanashi 400-8511, Japan
b Department of Environmental Chemistry and Materials, Okayama University, 3-1-1, Tsushimanaka, Okayama 700-8530, Japan |
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| Abstract: | LiBiO3, NaBiO3, MgBi2O6, KBiO3, ZnBi2O6, SrBi2O6, AgBiO3, BaBi2O6 and PbBi2O6 were synthesized by various processes such as hydrothermal treatment, heating and so on. These materials were examined for their photocatalytic activities in the decolorization of methylene blue and decomposition of phenol under visible light irradiation. For methylene blue decolorization, the presence of KBiO3 resulted in complete decoloration within 5 min. For phenol decomposition, NaBiO3 showed the highest activity, while LiBiO3, SrBi2O6 and BaBi2O6 possessed almost comparable decomposition rates. Their decomposition rates were apparently higher than that by anatase (P25) under UV irradiation. |
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| Keywords: | Visible light-sensitive photocatalyst Pentavalent bismuthate Electronic structure Phenol |
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