高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (11): 1933.

• 论文 • 上一篇    下一篇

单一板钛矿相TiO2微晶的制备

杨少凤1, 罗薇2, 朱燕超1, 刘艳华1, 赵敬哲1, 王子忱1, 邹广田2   

  1. 1. 吉林大学化学学院;
    2. 吉林大学超硬材料国家重点实验室, 长春 130023
  • 收稿日期:2003-01-06 出版日期:2003-11-24 发布日期:2003-11-24
  • 通讯作者: 王子忱(1953年出生),男,博士,教授,从事功能材料研究.E-mail:wangzc@jlu.edu.cn E-mail:wangzc@jlu.edu.cn
  • 基金资助:

    吉林省科技发展规划资助课题

Preparation of Brookite TiO2Micro-crystals with Single Phase

YANG Shao-Feng1, LUO Wei2, ZHU Yan-Chao1, LIU Yan-Hua1, ZHAO Jing-Zhe1, WANG Zi-Chen1, ZOU Guang-Tian2   

  1. 1. College of Chemistry;
    2. National Lab of Superhard Materials, Jilin University, Changchun 130023, China
  • Received:2003-01-06 Online:2003-11-24 Published:2003-11-24

摘要: 以新鲜的无定形TiO2沉淀为前驱体,在水热条件下得到了板钛矿型TiO2微晶粉末,考察了前驱体制备过程中碱的种类与用量以及水热反应的温度和时间等因素对板钛矿型TiO2的影响.XRD,TEM和Raman测试表明,所合成的样品具有单一的板钛矿型TiO2结构,晶相纯度很高,晶粒形状相同且具有完美的内部结构,粒度分布均匀.此板钛矿型TiO2样品在900℃时开始向金红石结构转化,1000℃时完全转变为金红石结构.

关键词: 板钛矿, 水热条件, 单一相, 相变

Abstract: Fresh precipitates of amorphous TiO2were used as the precursor to prepare brookite phase titania powders by hydrothermal method.The powders were characterized by XRD, Raman and TEM.All the results showed that the synthesized titania powders contained only brookite with a high purity of phase and uniform crystal size.The transformation from brookite to rutile occured when the powders were calcined at 900 ℃ and was completed at 1000 ℃.

Key words: Brookite, Hydrothermal condition, Single phase, Phase transformation

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