Facile synthesis of Fe3O4 nanoparticles by reduction phase transformation from γ-Fe2O3 nanoparticles in organic solvent
Facile synthesis of Fe3O4 nanoparticles by reduction phase transformation from γ-Fe2O3 nanoparticles in organic solvent
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DOI：
10.1016/j.jcis.2009.09.041
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发表时间：
2010-01-01
影响因子：
9.9
通讯作者：
Ogawa, Tomoyuki
中科院分区：
文献类型：
--
作者：
Hai, Hoang Tri;Kura, Hiroaki;Ogawa, Tomoyuki
利用反应器中有机物不完全燃烧反应产生的还原气体（CO），在溶液中对合成的γ-磁赤铁矿（γ-Fe 2 O3）纳米颗粒进行还原诱导相变。从X射线衍射，颜色指示剂，并使用SQUID磁性分析的结果强烈支持这种相变。基于这一路线，在260至300摄氏度的范围内简单地制备了单分散的磁铁矿（Fe 3 O 4）纳米颗粒。几乎所有方面的原始γ-Fe 2 O3纳米粒子，如形状，大小和单分散性。保持在所产生的Fe 3 O 4纳米颗粒中。(C)2009 Elsevier Inc. All rights reserved.
A phase transformation induced by the reduction of as-synthesized gamma-maghemite (gamma-Fe2O3) nanoparticles was performed in solution by exploiting the reservoir of reduction gas (CO) generated from the incomplete combustion reaction of organic substances in the reactor. Results from X-ray diffraction, Color indicator, and magnetic analysis using a SQUID strongly support this phase transformation. Based on this route, monodisperse magnetite (Fe3O4) nanoparticles were simply produced in the range from 260 to 300 degrees C. Almost all aspects of the original gamma-Fe2O3 nanoparticles, such as shape, size, and monodispersity. were maintained in the produced Fe3O4 nanoparticles. (C) 2009 Elsevier Inc. All rights reserved.