Anatase Sol Prepared from Peroxotitanium Complex Aqueous Solution Containing Niobium or Vanadium |
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Authors: | Hiromichi Ichinose Masanori Taira Sachiko Furuta Hiroaki Katsuki |
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Affiliation: | Ceramics Research Laboratory, Arita, Nishimatsuura, Saga 844-0024, Japan |
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Abstract: | Niobium- or vanadium-doped anatase sols were prepared by hydrothermal treatment of 0.1 mol/dm3 peroxotitanium complex aqueous solutions dissolving 0–10 mol% niobium or vanadium at 100°C for 8 h. Niobium-doping caused the increase of lattice constants of anatase and the shape change of anatase crystal from spindle-like to cubic-like structure, but no change of the optical absorbance. Vanadium-doping caused the decrease of lattice constant of c -axis, the miniaturization of anatase crystal and the increase of optical absorbance at the wavelength from 350–700 nm. |
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Keywords: | anatase niobium/niobium compounds vanadium/vanadium compounds |
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