Preparation of nanometer γ-Fe2O3 by an electrochemical method in non-aqueous medium and reaction dynamics

被引：10
|
作者：
Zhang, Zhang [1 ]
Zhang, Qiang
Xu, Li-na
Xia, Yi-ben
机构：
[1] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 201800, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 201800, Peoples R China
来源：
SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY | 2007年 / 37卷 / 01期
关键词：
electrochemical synthesis; nanosized Fe2O3; non-aqueous medium; reaction kinetics;
D O I：
10.1080/15533170601172468
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The synthesis of nanosized gamma-Fe2O3 through an electrochemical process in non-aqueous medium, then calcining at 300 degrees C is studied. The product obtained is characterized by XRD, SEM, Electron diffraction and Particle size distribution analysis, indicating that the fine-particle is a nanometer gamma-Fe2O3 with a spherical-shaped, an average size of 22.0 nm. From the VSM (vibrating sample magnetometer) test, the particle's coercivity (49.0 Oe) is rather small, presenting excellent superparamagnetism. Furthermore, the reaction dynamics and mechanism are explored by linear sweep voltammetry (LSV); the rate constants are accordingly determined.
引用
收藏
页码：53 / 56
页数：4
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