关键词: 纳米材料, 四氧化三铁, 制备, 进展

Abstract: Applications of ferriferrous oxide nanomaterials in magnetic materials，multifunctional materials，catalysts and medical field are described in this paper. Preparation methods of ferriferrous oxide nanometerials，including precipitation method，sol-gel method，micro-emulsion method，hydrothermal and solvothermal method，thermal decomposition method and electrospinning method，are introduced. Applied fields of ferriferrous oxide nanomaterials with various morphologies，such as nanoparticles，nanorods，nanowire，nanofilm，hybrid and core-shell nanomaterials are discussed. In this paper the advances of these methods are summarized. The advantages and disadvantages of these methods are discussed. Moreover，combining with our work on the preparation of ferriferrous oxide nanomaterials，the development trends of these fabrication methods are also proposed：the preparation of ferriferrous oxide nanometerials with special morphologies，the decrease of agglomeration and the oxidation of ferriferrous oxide nanometerials，the combination of several preparation methods and a way to realize industrial production.

Key words: nanometerial, ferriferrous oxide, synthesis, progress