摘要
Matijevic等曾报道在密闭静态环境下强迫水解酸化的铁盐溶液制备出几种形状单一的微米或亚微米级的均匀α-Fe2O3或β-FeOOH胶体粒子。类似的工作国内亦有报道。如粒子尺寸减小到纳米量级,则体系兼有表面效应、体积效应和特殊的光学性质。我们尝试用强迫水解法制备粒径几十纳米的球形或立方形的α-Fe2O3均分散胶体粒子,结果获得成功。
Spherical and cubic monodispersed hematite colloidal particles (30, 40 and 65 nm) were prepared by forced hydrolysis of acidified solutions of FeCl3. The reaction system is dynamic and open to increase the relative motion speed between the solute ions and the nuclei. The shape and size of the particles depend on the experimental conditions. The particles were characterized by TEM and XRD.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第7期1013-1014,共2页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
均分散
水溶胶
氧化铁
Monodisperse, Hematite, Hydrosol
