水解沉淀法制备纳米α-Fe_2O_3的实验研究  

Preparation of α-Fe_2O_3 nanoparticles by hydrolysis precipitation method

作　　者：李欣芳[1] 蒋武锋[1] 郝素菊[1] 张玉柱[1] 

机构地区：[1]华北理工大学冶金与能源学院现代冶金技术教育部重点实验室,河北唐山063009

出　　处：《粉末冶金工业》2016年第3期13-16,共4页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(51174075;51274084);河北省自然科学基金资助项目(E2012209024;E2014209157)

摘　　要：α-Fe2O3是最稳定的铁氧化物，具有良好的耐腐蚀、耐光性、磁性、催化性等特性。以FeCl3·6H2O为主要原料，采用水解沉淀法在一定的实验条件下制备出了椭球体的纳米α-Fe2O3。根据水解沉淀法的基本原理，研究了溶液pH值、FeCl3溶液浓度、焙烧温度对纳米α-Fe2O3显微形貌和颗粒尺寸的影响，利用SEM和XRD表征纳米α-Fe2O3的微观形貌和相结构。结果表明：制备纳米α-Fe2O3的最佳实验条件是溶液pH值为2.0，FeCl3溶液浓度为0.05 mol/L，产物前驱体的焙烧温度为400℃，制得的纳米α-Fe2O3纯度较高，平均粒径30～50 nm。α-Fe2O3 is the most stable compound in iron oxide with good corrosion resistance,light resistance, magnetic,catalytic,and so on. FeCl3 · 6H2O was used as the main raw material,and ellipsoidalα-Fe2O3 was pre-pared by hydrolysis precipitation method under certain experimental conditions. According to the basic principle of this method,the effect of solution pH value,the concentration of FeCl3 solution and calcination temperature on the morphology and particle size ofα-Fe2O3 was studied. The microstructure and phase structure of Fe2O3 nanoparti-cles were characterized by using SEM and XRD. The results show that the optimum experimental conditions for the preparation of Fe2O3 nanoparticles are as follows：that solution pH value is 2.0,the concentration of FeCl3 solu-tion is 0.05 mol/L,and the calcination temperature of the products precursor is 400℃. The purity of the prepared Fe2O3 nanoparticles is high and the average particle size is 30-50 nm.

关 键 词：水解沉淀法 纳米Α-FE2O3 表征 平均粒径 

分 类 号：TB383.1[一般工业技术—材料科学与工程]