超稳定结构的MCNTs/CeO_2纳米粒子复合材料的制备  

Preparation of Super-Stable MCNTs/CeO_2 Nanocomposites

作　　者：冯丽娟[1] 夏柏莹[1] 朱幸福[1] 王秀英[1] 刘红梅[1] 李吉学[1] 

机构地区：[1]吉林大学无机合成与制备化学国家重点实验室,吉林长春130012

出　　处：《中国稀土学报》2009年第5期717-720,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金项目(10674054)资助

摘　　要：采用溶剂热的方法,通过改变反应体系中水的含量,合成制备了不同形态、粒度和复合方式的二氧化铈纳米粒子(ceria nano-particles)/碳纳米管(multi-walls carbon nanotubes-MCNTs)复合材料。反应溶液甲醇中存在少量水的条件下,二氧化铈纳米粒子为球形,具有单晶结构,平均粒度为100 nm左右,与碳纳米管形成超稳定的"串珠"结构的复合材料;反应溶液为甲醇时,二氧化铈纳米粒子粒度约为20 nm的不规则形状,粒子的长轴沿碳管径向分布。X射线衍射分析表明,二氧化铈纳米粒子晶体结构为面心立方。Ceria nano-particles/muhi-wall carbon nanotubes （MCNTs） super-stable nanocomposites were prepared by solvent-thermal method. The sizes, morphology, and conformation of CeO2 nanoparticles with MCNTs were investigated by X-ray diffraction （XRD） , scanning electron microscope （SEM） and high resolution transmission electron microscopy （HR- TEM）. The results indicated that the sizes, morphology, and conformation of CeO2 nanoparticles with MC- NTs could be controlled via H2O quantity. The spheri cal ceria nanoparticles along MCNTs necklace-like supper-stable nanocomposites with size about 100 nm were synthesized at methanol solution with a little H2O, nevertheless, the ceria nanoparticles coating on MCNTs with size about 20 nm were founded at pure methanol.

关 键 词：超稳定 纳米复合材料 碳纳米管 稀土 

分 类 号：TB383[一般工业技术—材料科学与工程] TF123.25[冶金工程—粉末冶金]