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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

TiCl3、TiCl4共水解制备金红石相氧化钛粉体

孙静; 高濂; 张青红   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室 上海 200050
  • 收稿日期:2002-08-21 修回日期:2002-09-18 出版日期:2003-09-20 网络出版日期:2003-09-20

Synthesis of Nanocrystalline Rutile Titania by Co-thermal Hydrolysis of TiCl4 and TiCl3 Solutions

SUN Jing; GAO Lian; ZHANG Qing-Hong   

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2002-08-21 Revised:2002-09-18 Published:2003-09-20 Online:2003-09-20

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摘要： 通过TiCl3、TiCl4共同水解可以制备出金红石相的氧化钛粉体.改变原料浓度可 以控制产物的形貌,较高浓度下得到300—500nm的球状颗粒,由许多细小晶粒组成;较低浓 度下得到纳米针状颗粒.提高TiCl3的浓度可以使晶粒尺寸有所减小.

关键词: 三氯化钛, 四氯化钛, 金红石相, 氧化钛

Abstract: Nanocrystalline titania powders in the rutile phase were prepared by the homogeneous precipitation method
using TiCl4 and TiCl3 as starting materials. The products were characterized by X-ray diffraction (XRD), transmission electron
microscope (TEM) analysis and BET surface area measurement. The solution concentration and the added amount of Ti3+ determined the properties
of the obtained TiO2 powders. The photocatalytic activity of the powder was also studied by using the degradation of phenol in water as a test reaction.
It shows higher photocatalytic activity both in degradation rate and in degradation efficiency, probably due to the ultrafine particle size,
higher specific surface areas and more active surface groups for physicochemical adsorption.

Key words: nanocrystalline, rutile TiO2, TiCl4, TiCl3

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