Selective Synthesis of Rutile, Anatase, and Brookite Nanorods by a Hydrothermal Route
Qixin Deng, Mingdeng Wei, Zhensheng Hong, Xiaokun Ding, Lilong Jiang and Kemei Wei
Affiliation: Institute of New Energy Technology and Nano-Materials (ETM), Fuzhou University, Fuzhou, Fujian 350002, China.
In this study, we first report the selective synthesis of TiO2 nanorods of pure rutile, anatase and brookite TiO2 by the hydrothermal treatment of precursor titanate nanosheets. The synthesized TiO2 nanorods exhibit highly crystalline structure with different phases and morphologies. The experimental results indicate that morphologies of products depended significantly on the pH values of the reaction process. Following this, a possible model, dissolving-recrystallizing-growing, was proposed for the formation of TiO2 nanorods with different phases.
Keywords: Selectively synthesis, TiO2, nanorod, crystal growth, Rutile, Anatase, Brookite, Hydrothermal Route, titanate nanosheets, dissolving-recrystallizing-growing, nanowires, nanorods, nanotubes, anisotropic nanomaterials, nanocrystal, TiO2 nanorods, Teflon-lined autoclave, surface free energies, surface tensions, Donnay- Harker rules, nanosheets
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