Pseudo-Cube Shaped Brookite (TiO2) Nanocrystals Synthesized by an Oleate-Modified Hydrothermal Growth Method

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• 作者：Yukiaki Ohno ; Koji Tomita ; Yukihiro Komatsubara ; Takaaki Taniguchi ; Ken-ichi Katsumata ; Nobuhiro Matsushita ; Toshihiro Kogure ; Kiyoshi Okada
• 刊名：Crystal Growth & Design
• 出版年：2011
• 出版时间：November 2, 2011
• 年：2011
• 卷：11
• 期：11
• 页码：4831-4836
• 全文大小：946K
• 年卷期：v.11,no.11(November 2, 2011)
• ISSN：1528-7505

文摘

Single-phase nanoparticles of brookite, a less common polymorph of TiO₂ than rutile and anatase, were successfully synthesized using a water-soluble titanium鈥揼lycolate complex as the precursor and nanoparticle growth by an oleate-modified hydrothermal growth method. The synthesized particles were approximately 30 nm in size, had high crystallinity, and were highly dispersible in water. The morphology of the synthesized particles was a pseudocube surrounded mainly with four {210} and two {001} faces, accompanying truncation with small {111} facets. It is considered that the preferential absorption of oleate molecules on {210} and {001} faces resulted in the pseudocubic crystal shape.