Journal
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
Volume 116, Issue 1352, Pages 578-583Publisher
CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI
DOI: 10.2109/jcersj2.116.578
Keywords
titanium-amino acid complex; new water-soluble titanium complex; TiO2; photocatalyst; hydrothermal synthesis
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We prepared two new water-soluble complexes of titanium with L-serine and L(-)-threonine amino acids. It was demonstrated that these compounds can be outstanding precursors for a hydrothermal synthesis of nanocrystalline TiO2. The obtained powders were composed of anatase or a mixture of anatase and brookite. Particles diameters were -10 nm and BET surface areas were -120 m(2)/g. The powder composed of anallase and brookite synthesized by hydrothermal treatment of the titanium-threonine complex aqueous solution at 200 degrees C for 24 h exhibited higher photocatalytic activity for oxalic acid oxidation than the commercial anatase-type TiO2 photocatalyst (ST-01, Ishihara Sangyo Kaisya, average diameter: 7 nm, specific surface area: 257.5 m(2)/g). (c) 2008 The Ceramic Society of Japan. All rights reserved.
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