氧化铁微米晶溶剂热合成实验新方法  

Investigation of the Solvothermal Method for Fabrication of Magnetite Microcrystals

作　　者：张慧娟[1] 王煜[2] 赵昕 吴凯[3] ZHANG Huijuan;WANG Yu;ZHAO Xin;WU Kai(a. Analytical and Testing Center;1 b. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing go1331, Chin;2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, Chin)

机构地区：[1]重庆大学分析测试中心,北京100871 [2]重庆大学化学化工学院,重庆401331 [3]北京大学化学与分子工程学院,北京100871

出　　处：《实验室研究与探索》2018年第2期10-14,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金委青年基金项目(21403019);教育部国家级实验室开放基金项目(0220002402022)

摘　　要：探索了表面活性剂调控下磁性氧化物微米晶溶剂热合成实验的新方法。以二茂铁和乙醇为初始原料,利用表面活性剂修饰产物表面,在溶剂热体系中制备了单分散性、形貌均一的球状Fe3O4微米晶体,实现了对Fe3O4晶体形貌及尺寸的调控,并用XRD、ESEM、TEM等手段进行了表征。通过对乙酸钠的添加量、温度效应和时间效应的单因素探究,发现反应物浓度、温度和时间的改变对产物的形貌都有很大的影响,只有在一个较窄的区间内才可以得到形貌规整的球状微米晶体。总结了反应物浓度、反应温度和反应时间等实验条件与产物晶体尺度及形貌的关系。A new experiment approach was developed for obtaining the magnetite microcrystals by the solvothermal method.In this experiment,through a surfactant-assisted process,we utilized ferrocene and ethanol as source materials and successfully synthesized monodisperse,homogeneous spheral magnetic microstructures.This method achieved controlled growth of magnetic crystal in a certain extent.The products were characterized by XRD,ESEM and TEM.This paper demonstrates the relationship between size and shape of product and the experiment conditions including reactant concentration,reaction temperature and reaction time based on experiment data,and discusses the growth mechanism.

关 键 词：磁性氧化物 表面活性剂 球状 微米晶 

分 类 号：O79[理学—晶体学]