共沉淀法制备纳米Fe_3O_4影响因素的研究  

Factors Affecting the Preparation of Fe_3O_4 Nanoparticle through Liquid-Phase Coprecipitation

作　　者：崔升[1] 沈晓冬[1] 林本兰[1] 

机构地区：[1]南京工业大学材料科学与工程学院学院,南京210009

出　　处：《硅酸盐通报》2006年第3期48-51,共4页Bulletin of the Chinese Ceramic Society

基　　金：江苏省高等学校研究生创新计划项目;江苏省人民医院合作项目;中国人民解放军总装备部预研管理中心项目(41312030312)

摘　　要：利用正交设计的数学方法进行实验设计,采用液相共沉淀法制备纳米级Fe3O4颗粒,考察不同影响因素对微球平均粒径大小的影响,寻找制备纳米颗粒的最佳条件。所考察的因素分别为胶溶化时HCl加入量、Fe3+与Fe2+的比例、共沉淀时的pH值、制备Fe3O4的晶化温度。结果表明,以胶溶化时加入HCl3mL、Fe3+与Fe2+的比例2:3、共沉淀时的pH值11和制备Fe3O4的晶化温度80℃为最佳实验条件为,此时制得的纳米粉体平均粒径可达16.3nm;并利用粒径分析仪和HRTEM对所制备纳米粉进行结构表征。This Fe3O4 nanoparticle were prepared by liquid-phase coprecipitation, In order to gain the best parameters for preparing nanoparticle, the influences of different factors on average diameter of Fe3O4 nanoparticle were evaluated by orthogonal-designing method. Four factors with four levels were considered in the experiment, which were concentration of HCl, proportion of Fe^3＋/Fe^2＋, pH and crystal temperature. Character the size distribution of nanoparticle by Zetasizer. Achieve the optimization condition that is adding 3ml HCl, proportion of Fe^3＋/Fe^2＋ is 2：3, pH=11 and crystal temperature is 80℃. At this condition, the average size of nanoparticle is 15nm. Character the structure and morphology of nanoparticle by XRD and HRTEM.

关 键 词：正交设计 Fe3O4纳米粉 液相共沉淀法 制备 

分 类 号：TQ174.756[化学工程—陶瓷工业] TB383[化学工程—硅酸盐工业]