Research on the mechanism of the formation of nanoparticle of α-Fe2O3 powder in aqueous solution with amorphous δ-FeOOH

被引：0
|
作者：
Meng, Z
Jia, ZB
Wei, Y [1 ]
机构：
[1] Hebei Normal Univ, Sch Chem, Shijiazhuang 050016, Peoples R China
[2] Xingtai Coll, Dept Chem, Xingtai 054001, Peoples R China
来源：
ACTA CHIMICA SINICA | 2004年 / 62卷 / 05期
关键词：
nanoparticle; structure; phase transformation; precursor;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ultrafine alpha-Fe2O3 powder, with spherical shape, high purity and a diameter of less than 25 nm, formed rapidly in weak acid suspension by using amorphous delta-FeOOH as precursor. The phase, structure and shape of the product were characterized by XRD, FTIR, TEM, TG/DTA and size-analysis. It is revealed that amorphous delta-FeOOH is sensitive to heat and transfers to stable alpha-Fe2O3 and alpha-FeOOH much easily, while alpha-FeOOH can spontaneously transfer to alpha-Fe2O3 under refluxing.
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收藏
页码：485 / 488
页数：4
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