中文摘要：

以乙酰丙酮铗作为铁源,三甘醇作为溶剂,采用热分解法制备了原始以及酸化后的多壁碳纳米管负载铁氧体纳米粒子的复合材料.并用扫描电子显微镜（TEM）、X射线衍射（XRD）、穆斯堡尔谱等分析了材料的微观结构和特性.结果表明,铁氧体纳米粒子均匀地修饰在碳纳米管表面,没有明显团聚现象产生,酸化后的碳纳米管表面生成的纳米粒子中包含了Fe3O与Fe2O3两种粒子.碳纳米管经酸化后,其表面生成了许多缺陷,缺陷处的活泼电子更容易与生成的Fe3O4纳米粒子的外层电子之间进行快速的电子交换,使得Fe3O4纳米粒子中的FeⅡ被部分氧化,使生成的铁氧体纳米粒子更多地表现为Fe2O3的特性.

英文摘要：

Iron oxide nanoparticles loaded raw and acidized multi-walled carbon nanotube composites were prepared by thermal decomposition method,using ferric acetylacetonate as iron source and triethylene glycol as solvent.Transmission electron microscopy （TEM）,X-ray diffraction （XRD）,and Mossbauer spectrum were used to characterized the micro structure and property of the composites.Results showed that iron oxide nanoparticles could be uniformly decorated on both raw and acidized carbon nanotubes,without obvious aggregation.Nanoparticles decorated on acidized nanotubes contained both Fe3 O4 and Fe2 O3 particles.This might due to the defects on the nanotubes during the acidization.Rapid electron exchanges could be more frequently exist around the defects between nanotubes and Fe3O4 nanoparticles,resulting a more specialized Fe2 O3 feature of the nanoparticles.