中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 16 Special 1 June 2006 |
（1.Department of Materials Science and Engineering, Yunnan University, Kunming 650091, China2.Joinyou Fengyu Science and Technology Company Limited, Kunming 650101,China3.Department of Material Science and Engineering, Yunnan University, Kunming 650091,China）
Abstract:Anatase TiO2 nanoparticles were synthesized by using HTiO3 as raw material and adopting TiOSO4 solution neutralizing process. The results show that the hydrolytic reaction temperature and time, molar ratio of urea to Ti precursors (R), volume ratio of distilled water to the TiOSO4 solution (F) determine the yield of TiO2; the average crystalline size of TiO2 nanoparticles can be controlled through the sintering temperature and the optimum temperature is about 600 ℃; the TiO2 particles have good photocatalytic activity for decolorization of methyl orange.
Key words: synthesis; hydrolytic efficiency; particle size; photocatalytic activity; TiO2; TiOSO4
