乙醇溶剂热法制备纳米Fe_3O_4粒子表面包覆碳纳米管及其表征  

Preparation and characterization of Fe_3O_4 nanoparticle coated carbon nanotube by ethanol solvothermal method

作　　者：欧气局[1] 马传国[1,2] 万华妹[1] 李林[1,2] 成钢[1,2] 

机构地区：[1]桂林电子科技大学材料科学与工程学院,桂林541004 [2]广西信息材料重点实验室,桂林541004

出　　处：《化工新型材料》2017年第5期106-108,共3页New Chemical Materials

基　　金：国家自然科学基金项目(51363003);桂林电子科技大学研究生教育创新计划项目(GDYCSZ201486)

摘　　要：采用溶剂热法在240℃通过使乙酰丙酮铁在多壁碳纳米管/乙醇分散体系中热分解,原位得到了纳米Fe_3O_4粒子表面包覆的多壁碳纳米管(MWCNT@Fe_3O_4),并利用X射线衍射仪、扫描电子显微镜、热重分析仪、综合物性测量系统以及光学显微镜对其进行了表征。结果表明:当MWCNT和乙酰丙酮铁的配比为1∶2(质量比)时,纳米Fe_3O_4粒子在MWCNT@Fe_3O_4中的含量为29.6%(质量分数),其晶粒尺寸为22nm,形貌一致且粒径均匀,在MWCNT表面上分布均匀,无显著团聚现象;MWCNT@Fe_3O_4的饱和磁化强度达到29.87emu/g,在弱磁场(≤0.12T)诱导下,在环氧树脂中沿磁场方向发生定向排列,形成宽度为60μm左右的棒状结构。Carbon nanotube coated by Fe3O4 nanoparticles （MWCNT @Fe3O4 ） were prepared by solvothermal method through the thermal decomposition of ferric acetylacetonate in the mixture of MWCNT and ethanol at 240℃. The MWCNT@Fe3O4 particles were characterized by X-ray diffraction, scanning electron microscope, thermogravimetry analysis, physical property measurement system and optical microscopy. The results showed that, when the ratio of MWCNT and acetyl acetone iron was 1：2,Fe3O4 nanoparticles with uniform morphology and particle size were evenly distributed on the surface of MWCNTs,the grain size of nanoparticle was 22nm,and no significant agglomeration was observed. The content of Fe3O4 nanoparticles was 29.6wt% in MWCNT@ Fe3O4 with the saturation magnetization of 29.87emu/g. Under low magnetic field （40.12T）, the rod-like structures with a width of 60μm were formed by oriented MWCNT@Fe3O4 parallel to the direction of applied magnetic field in epoxy resin.

关 键 词：碳纳米管 四氧化三铁 溶剂热法 磁性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]