Synthesis and characterization of MgFe2O4 nanoparticles prepared by hydrothermal decomposition of co-precipitated magnesium and iron hydroxides

被引：66

作者：

Ilhan, Sedat ^{[1
]}

Izotova, Svetlana G. ^{[2
]}

Komlev, Andrei A. ^{[2
]}

机构：

[1] Istanbul Univ, Fac Engn, Dept Met & Mat Engn, TR-34320 Istanbul, Turkey

[2] Tech Univ, Chem Subst & Mat Fac, Dept Phys Chem, St Petersburg 190013, Russia

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 01期

关键词：

Magnesioferrite spinel; Nanoparticles; Layered double hydroxide; Hydrothermal synthesis; Thermodynamic analysis; AC MAGNETIC-FIELD; SOL-GEL; FERRITE POWDER; NANOCRYSTALLITES; MECHANISM; OXIDES;

D O I：

10.1016/j.ceramint.2014.08.106

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, formation of MgFe2O4 nanoparticles by the decomposition of co-precipitated magnesium and iron hydroxides between 300 and 450 degrees C temperatures and 500 atm water vapor pressure was studied. Decomposition mechanism and conditions of co-precipitated hydroxides was investigated by using XRD, FT-IR, SEM-EDS and simultaneous TG-DTA-MS analyses. It was found that magnesium and iron hydroxides were co-precipitated as amorphous layered double hydroxides (LDHs) and formation of MgFe2O4 nanoparticles took place via decomposition of LDHs as spatially separated thermodynamic stable phases under hydrothermal conditions. Crystallite sizes of the MgFe2O4 synthesized were calculated as in the range 45-60 nm. Comparison of thermodynamic calculations and experimental results showed that kinetic hindrances leaded to increase in theoretical formation temperature of MgFe2O4. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：577 / 585

页数：9

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