高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (2): 159.

• 论文 •    下一篇

BaTiO3纳米晶的合成与表征

王晓慧, 赵纯, 王子忱, 吴凤清, 赵慕愚   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1993-06-12 修回日期:1993-09-07 出版日期:1994-02-24 发布日期:1994-02-24
  • 通讯作者: 王晓慧,女,27岁,博士.
  • 作者简介:王晓慧,女,27岁,博士.
  • 基金资助:

    国家自然科学基金;国家教育委员会博士点基金

Synthesis and Characterization of BaTiO3 Nanocrystals

WANG Xiao-Hui, ZHAO Chun, WANG Zi-Chen, WU Feng-Qing, ZHAO Mu-Yu   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1993-06-12 Revised:1993-09-07 Online:1994-02-24 Published:1994-02-24

PDF (PC)

摘要： 以硬脂酸、硬脂酸钡和钛酸丁酯为原料合成了BaTiO3纳米晶,粒度为10～20nm,烧成温度为650℃,低于传统的合成温度。用红外光谱、差热分析、热重分析和X射线衍射对合成过程进行了研究,用透射电镜考察纳米晶的粒度和形貌。用发射光谱和X射线荧光光谱对样品纯度进行了分析。结果表明,此法合成的纳米晶BaTiO3纯度高、粒度小且较均匀,在常温下属立方钙钛矿型。

关键词: BaTiO3, 纳米晶, 硬脂酸凝胶法

Abstract: BaTiO3 nanocrystals were synthesized by stearic acid-gel methd(SAG) ,using stearic acid, barium stearate and tetrabutyl titanate as raw materials.The synthesis temperature was 650℃ and the formation temperature of perovskites oxide was 950℃ by conventional solid phase reaction method.The transformations of precursor compound to gel and to crystalline phase were characterized by infrared spectroscopy,differential thermal analysis and thermogravimatric analysis.The nanocrystalline BaTiO3 samples were characterized by transmission electron microscope(TEM) and X-ray diffraction.Powders were further analyzed by optical emission spectroscopy and X-ray fluorescence techniques to determine impurity contents and Ba:Ti ratios.Using this synthesis method,small size and high purity BaTiO3 nanocrystal could be obtained.

Key words: BaTiO3, Nanocrystals, Stearic acid-gel method

TrendMD: