CAJ | 학술논문

采用溶剂热法制备空心结构的 Fe3 O4纳米粒子,其中用乙二醇作为溶剂和还原剂、六水合三氯化铁(FeCl3?6 H2 O)作为铁离子源、无水醋酸钠(NaAc)作为碱性试剂和辅助结构指导剂,制备出了平均粒径为222 nm、空心结构明显、饱和磁强度为125．00 A?m2/kg,且具有良好反尖晶石晶型的 Fe3 O4纳米粒子.最后推测提出了空心磁粒的形成源自醋酸钠诱导的奥斯特瓦尔德(Ostwald)熟化机理.
채용용제열법제비공심결구적 Fe3 O4납미입자,기중용을이순작위용제화환원제、륙수합삼록화철(FeCl3?6 H2 O)작위철리자원、무수작산납(NaAc)작위감성시제화보조결구지도제,제비출료평균립경위222 nm、공심결구명현、포화자강도위125．00 A?m2/kg,차구유량호반첨정석정형적 Fe3 O4납미입자.최후추측제출료공심자립적형성원자작산납유도적오사특와이덕(Ostwald)숙화궤리.
Monodispersed magnetite (Fe3 O4 )nanospheres with hollow or porous interior structures were pre-pared via a facile one-pot solvothermal route.The simple fabrication process was characterized by using iron (Ⅲ)chloride hexahydrate (FeCl3?6 H2 O)as only ferric ion resource and anhydrous sodium acetate (NaAc)as structure-directing agent in an ethylene glycol solution without templates or surfactants involved.We prepared the hollow-structured magnetite nanoparticles with an average particle diameter of 222 nm,and saturation mag-netization intensity of 125.00 A?m2/kg,and they were inverse spinel crystal.A plausible mechanism based on sodium acetate orientation and subsequent local Ostwald ripening was proposed.