Controlled Synthesis of Titanium Dioxide Nanocomposites with Different Structures and Morphologies

Abstract:

Pure anatase, pure rutile and the mixed TiO₂ crystals with different amounts of rutile and anatase were prepared by a hydrothermal method using Ti (OBu)₄ as starting material. The effect of anions on crystal phase and morphology of TiO₂ synthesized by the hydrothermal method was investigated, and the relevant mechanism was also discussed. The X-ray diffraction (XRD) results indicate that Cl^- ion was in favor of the formation of rutile, while NO₃^- and CH₃COO^- were beneficial for the formation of anatase. The hydrothermal conditions have significant effects on the phase component, morphology, and particle size of obtained titania products. Additionally, mixed TiO₂ crystals with different amounts of rutile and anatase could be prepared by adjusting the reaction conditions, such as the concentration of Cl^- ion, hydrothermal time, the amount of citric acid and the concentration of tetrabutyl titanate.

• Periodical: Applied Mechanics and Materials (Volume 535)
• Pages: 645-649
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.535.645
• Online since: February 2014
• Authors: Bing Hai Dong, Zhi Guang Guo*, Shi Min Wang, Xiu Lian Song, Li Zhao, Hong Bing Lu, Li Wan
• Keywords: Controllable Synthesis, Hydrothermal Method, Morpholoy, Titanium Dioxide Structure

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