Synthesis of TiO2 Nanoparticles via a Ti(Ⅳ) Complex with Stearic Acid and the Photocatalytic Activity for Organic Oxidation

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2002,（1）
• 页码范围: 9-13
• 页数: 5页
• 语种: 英文

摘要

The nano-sized particles of TiO2 were prepared by thermal decomposition of titanium(Ⅳ) tetrabutanoxide complex with stearic acid at 450 ℃ in the air. It was observed that the amount of stearic acid, used initially for the complex synthesis in 2-propanol at 25 ℃, had great influence on the physical properties of the prepared TiO2 including crystal structure,the particle size, surface area and the adsorption capacity for organic substrate of a textile dye X3B in water, and thereafter the photocatalytic activity for the dye oxidation. Some samples displayed lower adsorption capacity for the organic substrate in water than a TiO2 of Degussa p25, but higher photocatalytic activity for the organic oxidation. Possible reason for the observed difference was discussed in the text.