Phase evolution in Fe2O3/MgO nanocomposite prepared via a simple precipitation method

被引：30
|
作者：
Azhari, A. [1 ]
Sh, M. Sharif [1 ]
Golestanifard, F. [1 ]
Saberi, A. [1 ]
机构：
[1] Iran Univ Sci & Technol, Ctr Excellence Adv Mat Proc, Tehran, Iran
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 124卷 / 01期
关键词：
Nanocomposite; MgFe2O4; spinet; Precipitation route; MAGNESIUM-OXIDE; MGFE2O4; NANOPARTICLES; IRON; MECHANISM; FERRITE; MGO;
D O I：
10.1016/j.matchemphys.2010.07.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanocomposite of MgO/Fe2O3 was prepared via a simple precipitation route by which a dispersed system containing nano-MgO flakes and nano-Fe2O3 particles was obtained. It seems that modification of the surface of nano-Fe2O3 by controlling pH and the flaky habit of MgO grown from Mg(OH)(2) were the main criteria for high dispersion yield in the as-received nanocomposite system. Formation of magnesioferrite spinel in consequence of a solid state reaction at significantly low temperature of 600 degrees C was revealed through phase evolution studies carried out by XRD and DSC analyses. The reaction studied at the interface of MgO-Fe2O3 nanoparticles by STEM proved the formation of MgFe2O4 spinel via a counter-diffusion process. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：658 / 663
页数：6
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