化学学报 ›› 2002, Vol. 60 ›› Issue (8): 1524-1526. 上一篇    下一篇

研究论文

三氯化钛水解法制备纳米金红石相氧化钛粉体

孙静;高濂   

  1. 中国科学院上海硅酸盐研究所.上海(200050)
  • 发布日期:2002-08-15

Preparation of Rutile Nano Titania by Direct Hydrolysis of TiCl_3 Solutions

Sun Jing;Gao Lian   

  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences.Shanghai(200050)
  • Published:2002-08-15

以TiCl_3为原料,通过控制盐浓度和水解温度可以在温和条件下制备出晶粒尺 寸为6~8 nm的金红石相氧化钛粉体,比表面为74.55 m~2/g,TEM照片显示粉体, 比表面为74.55 m~2/g, TEM照片显示粉体为钛状。苯酚的光催化降实验表明这种粉 体具有与P-25相关的光催化活性。采用(CH_3)_4NOH为注定剂,粉体经800 ℃煅烧 ,晶相由锐钛相全部转变为金红石相。

关键词: 氯化钛, 金红石型结构, 纳米相材料, 氧化钛, 透射电子显微术, 苯酚, 降解

Rutile nano titania powders have been synthesized by direct hydrolysis of TiCl_3 solutions under mild conditions. The rutile powders possess needelike morphology and have high surface area of 74. 5 m~-2/g。It shows very high photoactivity in the phenol degradation reaction, even higher than the commercial power Degaussa P-25. Large scale productio of rutile powders with particle size in the range of 100 to 200 nm can be performed using (CH_3)_4NOH as precipitant.

Key words: TITANIUM CHLORIDE, RUTILE TYPE STRUCTURE, NANOPHASE MATERIALS, TITANIUM OXIDE, TEM, PHENOL, DEGRADATION

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