采用浸渍-还原法制备多孔Al2O3负载纳米Fe颗粒复合材料.利用X射线衍射仪(XRD)、穆斯堡尔谱仪(M(o)ssbauer)和振动样品磁强计(VSM)对样品的微观结构及磁性能进行了研究.发现铁元素以纳米级单质Fe颗粒和超顺磁态α-Fe2O3(< 20 nm)的形式存在.通过穆谱知,氢气气氛600 ℃还原3 h, 59.9%铁元素转变为单质铁.浸渍-还原方法能在较低温度下成功制备不同组成、微观结构及磁性能的多孔磁性材料.
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