水溶性チタン錯体を用いたルチル型酸化チタンの水熱合成と形態制御(<特集>水溶液科学に立脚したセラミックス合成プロセス)

概要

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Single phase rutile was synthesized by a simple hydrothermal treatment of an aqueous titanium glycolate complex solution at 200℃ for 24 h. The obtained sample was composed of 50×150 nm rod-like nanoparticles. The aspect ratio of the prepared particles could be controlled by adding glycolic acid or lactic acid to reaction solution. Up to 30×2000 nm whisker-like particles could be obtained. The hydroxycarboxylic acids favor development of specific crystal facets and allow to control the aspect ratio of the rutile nanoparticles. We also proposed a model, which explains formation of anatase and rutile, and disappearance of anatase particles during rutile crystals development.
社団法人日本セラミックス協会の論文
2007-12-01