Preparation and Characterization of Solid Solutions of TiO2 and Trirutile Type MSb2O6 (M=Cu, Zn, Mg, Co and Ni)

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  • Katsui Akinori
    Dept. of Materials Chemistry, School of High-Technology for Human Welfare, Tokai University
  • Hatano Ken
    Dept. of Materials Chemistry, School of High-Technology for Human Welfare, Tokai University
  • Matsushita Hiroaki
    Dept. of Information and Communication Technology, School of High-Technology for Human Welfare, Tokai University

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The solid solution of trirutile-type MSb2O6 (M=Cu, Zn, Mg, Co and Ni) and TiO2 with the molar rates x=0.125, 0.25, 0.5 and 0.75 in (MSb2O6)x(TiO2)1-x was prepared by a solid state reaction. The results showed that the solid solutions were formed except for (MSb2O6)0.75(TiO2)0.25 (M=Mg and Co) and x=0.50 and 0.75 in (NiSb2O6)x(TiO2)1-x, and were crystallized in trirutile type structure. Diffuse reflectance spectroscopy measurement for their powders indicated that the energy bandgaps were approximately 2.1 eV for (CoSb2O6)x(TiO2)1-x (x=0.125, 0.25 and 0.5), and were approximately 2.6 and 2.4 eV for (NiSb2O6)x(TiO2)1-x (x=0.125 and 0.25) and (CuSb2O6)x(TiO2)1-x (x=0.125, 0.25, 0.5 and 0.75), respectively. The photocatalytic activity for visible light was observed in (CoSb2O6)x(TiO2)1-x and (CuSb2O6)x(TiO2)1-x.

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