水热合成纳米NiFe_2O_4粉体  

Nano-NiFe_2O_4 Powders Synthesized by Hydrothermal Method

作　　者：全金峰[1] 周波[2] 高瑞睿 

机构地区：[1]黑龙江科技大学矿业工程学院,哈尔滨150022 [2]黑龙江科技大学石墨新材料工程学院,哈尔滨150022

出　　处：《煤炭技术》2014年第3期181-183,共3页Coal Technology

摘　　要：通过水热法采用Ni(N03)2·6H2O和FeCl3·6H2O合成纳米NiFe2O4粉体。利用X射线衍射(XRD)、扫描电镜(SEM)对样品进行表征。结果表明,不同PEG和反应温度对合成纳米NiFe2O4粉体有影响。通过扫描电镜分析,不加PEG、加PEG-400和PEG-2 000对近似于球体颗粒粒度大小有影响,而加入PEG-20000,纳米NiFe2O4粉体形状变成了纳米线,均匀分布;不同反应时间对合成纳米NiFe2O4粉体没有明显的影响;而不同反应温度对合成纳米NiFe2O4粉体形状有影响,其影响是从纳米线变化到出现少量颗粒与纳米线混合,再到大量球形颗粒混合纳米线。水热过程是溶解再结晶的过程,部分晶体经高温后结晶成颗粒。Using Ni（N03）2·6H2O and FeCl3·6H2O synthesized nano-NiFe2O4. The sample was characterized by X-ray diffraction and scanning electron microscopy. The results show that different PEG and reaction temperature on the synthesis of nano-NiFe2O4powder are influential. Scanning electron microscopy（SEM）, without PEG, plus PEG400 and PEG2000 spherical particles of similar particle size effect, and the addition of PEG20000, nano-NiFe2O4into a powder form nanowires, evenly distributed; different reaction time on the synthesis of nano-NiFe2O4powder is no significant effect; reaction temperature and the shape of the synthesis of nano powder impact NiFe2O4, NiFe2O4nano-powder to change from a small amount of nanowires and nanowire hybrid particles, and then a large number of spherical particles are mixed nanowires. Hydrothermal recrystallization during the process of dissolving, after the high temperature part of the crystal particles of a crystal.

关 键 词：水热法 纳米NiFe2O4 晶体 

分 类 号：TQ17[化学工程—硅酸盐工业]