化学学报 ›› 1991, Vol. 49 ›› Issue (6): 529-534. 上一篇    下一篇

研究论文

均匀Fe3O4胶体粒子形成过程的Mossbauer研究

陈龙武;姜继森;林奋;蒋可玉   

  1. 华东师范大学物理学系;华东师范大学化学系
  • 发布日期:1991-06-15

A Mossbauer study on the formed process of uniform magnetite particles

CHEN LONGWU;JIANG JISHUN;LIN FEN;JIANG KEYU   

  • Published:1991-06-15

应用经过改进的实验方法制得均匀球状Fe3O4胶体粒子, 通过对多种Fe3O4粒子的Mossbauer测量并结合发析, 我们发现, 在制备过程中, 反应浓度、加液次序以及陈化时间的不同对所生成的Fe3O4晶体的基本骨架与结构影响极小, 而随着陈化时间的不断增加, Fe3O4粒子的组成将逐渐接近化学计量, 以这些实验结果及文献报道为基础, 本文讨论了均匀Fe3O4胶体粒子的形成机理。

关键词: 透射电子显微术, X射线衍射分析, 氧化铁, 化学计量学, 胶体, 穆斯堡尔谱法

By using a modified experimental procedure, samples of uniform spherical magnetite particles had been prepared Through the Moessbauer spectrum determination and chem. analyses of various samples of uniform magnetite particles, the authors found that with the increase of aging time uniform magnetite particles with stoichiometric composition were obtained. The mechanism of formation of uniform magnetite particles was discussed.

Key words: TRANSMISSION ELECTRON MICROSCOPY, X-RAY DIFFRACTION ANALYSIS, IRON OXIDE, STOICHIOMETRY, COLLOID, MOSSBAUER SPECTROMETRY

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