中华医学超声杂志

应用化学 ›› 1993, Vol. 0 ›› Issue (3): 32-34.

• 研究论文 • 上一篇    下一篇

H2O2氧化-水热处理联用法制备高纯超微BaTiO3粉末

钱逸泰1, 陈乾旺1, 陈祖耀1, 周贵恩2, 范成高2   

  1. 1. 中国科学技术大学应用化学系 230026 合肥;
    2. 中国科学院中国科学技术大学结构分析开放实验室 合肥
  • 收稿日期:1992-07-01 修回日期:1992-11-23 出版日期:1993-06-10 发布日期:1993-06-10

PREPARATION OF HIGH-PURITY ULTRAFINE BaTiO3 BY H2O2 OXIDATION HYDROTHERMAL COMBINED MEIHOD

Oian Yitai1, Chen Qianwang1, Chen Zuyao1, Zhou Guien2, Fan Chenggao2   

  1. 1. Department of Applied Chemistry, University of Science and Technology of China, 230026 Hefei;
    2. Structure Besearch Laboratory, University of Science and Technology of China, Chinese Academy of Sciences, Hefei
  • Received:1992-07-01 Revised:1992-11-23 Published:1993-06-10 Online:1993-06-10

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摘要： 将高纯钛在氨水溶液中用H2O2氧化形成钛的过氧化物溶液(TiO42-),由此亦可制得凝胶(TiO2·xH2O),锐钛矿和金红石。这几种反应物在Ba(OH)2溶液中140℃水热处理6小时都能生成BaTiO3粉末,以钛的过氧化物溶液为反应物所得的粉末粒径最小(55nm),分布最均匀。锐钛矿比金红石的反应性要好,所得粉末粒径也比较小。

关键词: BaTiO3, 超微粉末, 制备, 水热处理, H2O2氧化

Abstract: High-purity ultrafine powder of BaTiO3 was prepared by H2O2 oxidation hydrothermal combined method. H2O2 oxidation was performed at room temperature,hydrothermal-treatment at 140℃.When solution of titanium peroxide was mixed with excess of barium hydroxide solution and hydrothermally treated for 6h, single phase powder of BaTiO3 was obtained with average particle size 55nm and a narrow particle size distribution. From TiO42- solution TiO2·xH2O, anatase and rutile also could be obtained, but the crystals of TiO2 were less effective for BaTiO3 preparation. Anatase powder formed BaTiO3 by hydrothermal-treatment at 140℃ for 6h gave BaTiO3 of 0. 12μm size in average.

Key words: BaTiO3, ultrafine powder, preparation, hydrothermal-treatment, H2O2-oxidation

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