Synthesis of ZnFe2O4 nanocrystallites by mechanochemical reaction

被引：57

作者：

Yang, HM ^{[1
]}

Zhang, XC ^{[1
]}

Huang, CH ^{[1
]}

Yang, WG ^{[1
]}

Qiu, GZ ^{[1
]}

机构：

[1] Cent S Univ, Sch Resources Proc & Bioengn, Dept Inorgan Mat, Changsha 410083, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2004年 / 65卷 / 07期

基金：

中国国家自然科学基金;

关键词：

crystal growth; X-ray diffraction; crystal structure;

D O I：

10.1016/j.jpcs.2004.03.001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mechanochemical reaction of ZnO and alpha-Fe2O3 in a planetary mill formed an amorphous precursor, which was subsequently heated to successfully produce zinc ferrite (ZnFe2O4) nanocrystallites. The amorphous precursor and nanocrystallites were characterized by differential thermal analysis (DTA), thennogravimetric analysis (TGA), X-ray diffraction (XRD) and transmission electron microscopy (TEM). Calcination of the precursor powder at 600 degreesC led to the formation of ZnFe2O4 nanocrystallites of about 22 nm in crystal size, and most of particle was about 10-50 nm in diameter. Effect of calcination temperature on the crystal size of the nanoparticles was investigated. The mechanism of nanocrystallite growth was primarily investigated. The activation energy of ZnFe2O4 nanocrystallite formation during thermal treatment was calculated to be 18.5 kJ/mol. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1329 / 1332

页数：4

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