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纳米镍颗粒填充碳纳米管的制备与磁性能

, PP. 124-128

Keywords: 碳纳米管,填充,纳米颗粒,微结构,磁性能

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Abstract:

采用自制的实验装置,通过阳极弧放电等离子体技术成功制备了Ni纳米颗粒填充的碳纳米管,利用高分辨透射电子显微镜(HRTEM)、XRD、TEM、X射线能量色散分析谱仪(XEDS)和振动样品磁强计(VSM)等测试手段对样品的化学成分、形态、微观结构和磁性能进行了表征。实验结果表明,采用本文中实验方法能获得大量被纳米金属颗粒填充的碳纳米管,其内部填充物为面心立方(FCC)结构的纳米Ni颗粒,外围薄层为石墨碳层。碳纳米管的外径为30~40nm,壁厚5~8nm,内部填充的纳米颗粒呈球形和椭球形,粒径均匀,在管腔内不连续分布。产物具有顺磁特性,矫顽力是78Oe,饱和磁化强度是33enu/g。

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