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材料工程 2008

尖晶石MgFe2O4纳米粉的水热反萃合成

王兴尧,韩珺圆,王静,杨桂琴

Keywords: 水热反萃,MgFe2O4,纳米粉体,合成

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Abstract:

介绍一种合成尖晶石铁酸镁纳米粉的新方法——水热反萃合成法,并用此法合成了晶粒粒度在12~18nm的Mg-Fe2O4粉体。借助于XRD和TEM测试手段,考察了反萃温度、水相的pH和组成对产物形貌和粒度的影响。结果表明在190~210℃时,用纯水反萃负载金属铁和镁的混合有机相可以直接得到尖晶石结构、近似球形和粒度分布均匀的MgFe2O4纳米粉体,且不会发生硬团聚。

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