纳米氧化铁的制备及形貌分析  

Preparation and morphology analysis of nano-sized iron oxide

作　　者：孙天昊 郝素菊 蒋武锋 张玉柱 SUN Tian-hao;HAO Su-ju;JIANG Wu-feng;ZHANG Yu-zhu(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China;Key Laboratory of Modern Metallurgical Technology for Ministry of Education,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]华北理工大学冶金与能源学院,唐山063210 [2]华北理工大学现代冶金技术教育部重点实验室,唐山063210

出　　处：《粉末冶金技术》2021年第1期76-80,共5页Powder Metallurgy Technology

基　　金：国家自然科学基金资助项目(51274084);河北省自然科学基金资助项目(E2018209323,E2017209231)。

摘　　要：以九水硝酸铁(Fe(NO3)3·9H2O)为铁源,无水乙醇和乙二胺为表面活性剂,采用水热法制备了纳米氧化铁(Fe2O3纳米棒),通过扫描电子显微镜观察分析了Fe2O3纳米棒形貌,研究了(Fe(NO3)3·9H2O)质量分数及反应温度对Fe2O3纳米棒颗粒尺寸的影响。结果表明,纳米棒的长度和宽度分别约为500~600 nm和50~60 nm;在160~220℃范围内,温度对Fe2O3纳米棒形貌的影响不显著;在一定范围内提高铁源质量分数可使纳米棒颗粒尺寸变小。Fe2O3纳米棒的形成机理为:铁源在强碱性的溶液中反应生成棕黄色絮状沉淀α-FeOOH,该沉淀在高温高压的环境中,在乙二胺作用下脱水形成Fe2O3纳米棒。The nano-sized iron oxide(Fe2O3 nano-rods)was prepared by hydrothermal method with Fe(NO3)3·9H2O as the iron source,using anhydrous ethanol and ethylenediamine as the surfactant.The morphology of the Fe2O3 nano-rods was observed and analyzed by scanning electron microscope,and the effects of the Fe(NO3)3·9H2O mass fraction and the reaction temperature on the particle size of Fe2O3 nano-rods were studied.The results show that,the length and width of the Fe2O3 nano-rods are about 500~600 nm and 50~60 nm,respectively.The effect of temperature on the Fe2O3 nano-rod morphology is not significant at 160~220℃.The increase of iron source mass fraction in a certain range decreases the particle size of Fe2O3 nano-rods.The formation mechanism of the Fe2O3 nano-rods is as follows:the iron source reacts in the strongly alkaline solution to form the brown-yellow flocculent precipitatedα-FeOOH,which is dehydrated to form the Fe2O3 nano-rods under the influence of ethylenediamine in a high temperature and high pressure environment.

关 键 词：氧化铁 水热法 纳米棒 形貌 

分 类 号：TF03[冶金工程—冶金物理化学]