Shape-controlled synthesis of nanocrystalline titania at low temperature |
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Authors: | Renhe Chu Jichang Yan Suoyuan Lian Yuehong Wang Fucheng Yan Dawei Chen |
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Affiliation: | Department of Chemistry, Northeast Normal University, People Street 138, Changchun, Jilin 130024, People's Republic of China |
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Abstract: | The interesting shape (shuttle-like, sphere with needles, uniform particles) rutile titania were prepared by the hydrolysis of TiCl4 in high acidic aqueous solution in the absence or presence of PEG-1000. PEG-1000 acted as dispersant, which could control the shape and size of the precipitate of titania. As a result, shuttle-like nanocrystalline appeared and the aggregation was improved with the increase of the amount of acid and the decrease of the concentration of TiCl4 in the absence of PEG-1000. Uniform nanoparticles were obtained in the presence of PEG-1000 and the diameter of the particles decreased with increasing the amount of PEG-1000. This process simplification will lower production cost and make continuous process possible. The products were analyzed using X-ray diffractometer, transmission electron microscopy. |
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Keywords: | A. Titania A. Titanium tetrachloride B. Hydrolysis C. Transmission electron microscopy C. X-ray diffraction |
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