多元醇法制备纳米Fe_3O_4的研究  

Study on preparing Fe_3O_4 nanoparticles by polyol process

作　　者：刘飚[1] 官建国[2] 张清杰[2] 

机构地区：[1]济南大学材料科学与工程学院,山东济南250022 [2]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《化学工程》2007年第7期56-57,70,共3页Chemical Engineering(China)

基　　金：国家自然科学基金重点项目(29904005)

摘　　要：为了研究液相多元醇法制备金属纳米粒子,以氯化亚铁为前驱物,1,2-丙二醇为还原剂,意外获得了Fe3O4纳米粒子。通过X射线衍射分析标定了获得样品的物相为面心立方结构的Fe3O4,用透射电镜观察了样品的形貌,其颗粒形貌为球形,大小为50—70 nm。根据标准状态下氧化-还原反应的电池电动势研究了反应机理,结果表明,Fe2+发生了歧化反应,反应主要向Fe2+被氧化的方向进行,产物为纳米Fe3O4。In order to study the preparation of metal nano-particles by liquid polyol process, Fe3O4 nanoparticles were obtained unexpectedly by polyol process using FeCl2· 4H2O as precursor, 1,2-propylene glycol as reducer. The as-prepared sample was characterized by XRD analysis. The morphology observed by TEM showed that the shape of Fe3O4 nanoparticles was spheric, the size of them was 50-70 nm. The reaction mechanism was researched on the basis of cell electro-motive force of oxido-reduction. The results show that the disproportionation of Fe^2＋ ions occurs and the Fe^2 ＋ ions are oxidized to produce Fe3O4 nanoparticles.

关 键 词：多元醇法 纳米FE3O4粒子 反应机理 歧化反应 

分 类 号：O614.811[理学—无机化学]