Microwave-hydrothermal synthesis of monodispersed nanophase α-Fe2O3

被引：0
|
作者：
Katsuki, H [1 ]
Komarneni, S
机构：
[1] Saga Ceram Res Lab, Saga 8440024, Japan
[2] Penn State Univ, Dept Agron, University Pk, PA 16802 USA
[3] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2001年 / 84卷 / 10期
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D O I：
暂无
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：
Synthesis of monodispersed nanophase alpha -Fe2O3 (hematite) powder to be used as a red pigment in porcelains was investigated using microwave- hydrothermal and conventional-hydrothermal reactions using 0.018M FeCl3. 6H(2)O and 0.01M HCl solutions at 100 degrees -160 degreesC. Acicular and yellow beta -FeOOH (akaganite) particles 300 nm in length and 40 mn in thickness were dominantly formed at 100 degreesC after 2-3 h, while spherical alpha -Fe2O3 particles 100-180 nm in diameter were preferentially formed after 13 h using a conventional-hydrothermal reaction. However, a microwave-hydrothermal reaction at 100 degreesC led to monodispersed and red alpha -Fe2O3 particles 30-66 urn in diameter after 2 h without the formation of beta -FeOOH particles. In this paper, the effect of microwave radiation during hydrothermal treatment at 100 degrees -160 degreesC on the formation yield, kinetics, morphology. phase type, and color of alpha -Fe2O3 was investigated.
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页码：2313 / 2317
页数：5
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