纳米γ-Fe_2O_3的室温固相反应工艺研究  

Processing Technology of Nano-sized γ -Fe_2O_3 Particles by Solid-State Reaction

作　　者：王鹏飞[1] 李亚东[1] 

机构地区：[1]苏州大学材料工程学院,江苏苏州215021

出　　处：《中国粉体技术》2006年第2期34-36,共3页China Powder Science and Technology

摘　　要：采用室温固相法合成了γ-Fe2O3的前驱体FeC2O4·2H2O及纳米γ-Fe2O3。以FeSO4·7H2O和H2C2O4·2H2O为原料,先得到了前驱体FeC2O4·2H2O,通过对反应机理的初步探讨,并研究其物质结构、分解过程和合适煅烧温度,最后在400℃下煅烧前驱体3h得到γ-Fe2O3纳米粒子。经热重(TG-DTA)、X射线衍射(XRD)和透射电镜(TEM)测试手段的分析,结果表明:室温固相法合成纳米γ-Fe2O3产物γ-Fe2O3纯净、粒子为纳米级且分布均匀。The FeC2O4 , 2H2O precursor and γ-Fe：O3 nanoparticle were prepared by solid-state reaction at room temperature. The FeC2O4 · 2H2O precursor was prepared with FeSO4 · 7H2O and H2C2O4 · 2H2O. By the primary study of reaction mechanism and structure, decomposition, and appropriate calcining heat, the synthesis of γ- Fe2O3 nanoparticle was achieved by thermal decomposition of FeC2O4 · 2H2O precursor 3 h at 400 ℃ .The nanoparticle was characterized by TG-DTA, X-ray diffraction（XRD）and transmission electron microscope（TEM）.The results showed that the γ-Fe·O3 nanoparticld synthesed by solid-state reaction were pure and well-di ibuted.

关 键 词：纳米Γ-FE2O3 固相反应 前驱体 

分 类 号：TB383[一般工业技术—材料科学与工程]