Synthesis of Nanocrystalline TiO 2 Particles by Hydrolysis of Titanyl Organic Compounds at Low Temperature
2004; Wiley; Volume: 87; Issue: 6 Linguagem: Inglês
10.1111/j.1551-2916.2004.01035.x
ISSN1551-2916
AutoresXiaoquan Chen, GU Guo-bang, Huanbin Liu, Zhennian Cao,
Tópico(s)Advanced Photocatalysis Techniques
ResumoFourier transform infrared analysis, nuclear magnetic resonance, and thermogravimetric analysis show that most of the solid product prepared from the reaction of Ti(OC 4 H 9 ) 4 and excess (CH 3 CO) 2 O is a mixture of titanyl organic compounds. Nanocrystalline TiO 2 particles, which include anatase TiO 2 , rutile TiO 2 , and a mixture of anatase and rutile, can be obtained from hydrolysis of the titanyl organic compounds under normal pressure at 60°C. The particle size, shape, and formation process of the crystals have been studied using X‐ray diffraction and transmission electron microscopy. The specific‐surface‐area data for a rutile TiO 2 sample and the powders obtained after calcination at different temperatures have been measured by the Brunauer–Emmett–Teller method.
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