水热法制备CoFe2O4纳米晶及其表征  

Preparation and Characterization of CoFe2O4 Magnetic Nanoparticles by Hydrothermal Method

作　　者：沈雨萌 周舒凡 于佳酩 张怡 郑城凤 程倩 SHEN Yu-meng;ZHOU Shu-fan;YU Jia-ming;ZHANG Yi;ZHENG Cheng-feng;CHENG Qian(School of Materials Science and Engineering,Northeast Forestry University,Heilongjiang Harbin 150040,China)

机构地区：[1]东北林业大学材料科学与工程学院

出　　处：《广州化工》2019年第19期39-41,共3页GuangZhou Chemical Industry

基　　金：东北林业大学大学生创新创业训练计划项目(CL201813);黑龙江省博士后基金(No:LBH-Z14004)

摘　　要：以FeCl3·6H2O,CoCl2·6H2O和NaOH为原料,乙二醇为溶剂,采用水热法制备性能优良的CoFe2O4纳米粒子,系统研究了反应温度、沉淀剂用量对制备CoFe2O4纳米粒子结构和形貌的影响。利用XRD、SEM、FTIR等测试手段对所制备样品的结构、形貌和性能进行表征。结果表明:当沉淀剂用量为20mmol,反应温度为180℃时,可制备具有面心立方尖晶石结构的CoFe2O4纳米粒子,其平均粒径在500nm左右,形貌为球形,且在极性溶剂中具有良好的分散性。制备的纳米晶具有较好的超顺磁特性,室温下其饱和磁化强度为51.47emu/g。Cobalt ferrite nanoparticles with high performance were synthesized via hydrothermal method with hexahydrated ferric chloride, hexahydrated cobalt chloride and NaOH as raw materials, and ethylene glycol as the solvent. The effects of temperature and the amount of the precipitant NaOH on the structure and morphology of the CoFe 2O 4 nanoparticles were systematically investigated. Furthermore, the structure, morphology and properties of the synthesized samples were analyzed by XRD, SEM, FTIR and PPMS. The results showed that the spherical shape CoFe 2O 4 nanoparticles with face centered cubic spinel structure were successfully prepared at the condition of 20 mmol dosage of precipitant at 180 ℃.The prepared samples had good dispersion with the average size of around 500 nm. Moreover, the saturation magnetization intensity of the CoFe 2O 4 nanoparticles was 51.47 emu/g.

关 键 词：钴铁氧体 水热法 磁性能 

分 类 号：O614[理学—无机化学]