镍纳米颗粒填充碳纳米管的制备和表征

Preparation and Characterization of Ni Nanoparticles Filled Carbon Nanotubes

摘要:

采用阳极弧放电等离子体技术制备了Ni纳米颗粒填充的碳纳米管，并利用高分辨透射电子显微镜（HRTEM）、X射线衍射 (XRD)、透射电子显微镜 (TEM)、拉曼光谱（Raman）和X射线能量色散分析谱仪 (XEDS) 等测试手段对样品的化学成分、形态和物相结构等特征进行了表征。结果表明，采用本实验的方法能获得大量的被纳米金属颗粒填充的碳纳米管，内部填充物为fcc结构的Ni纳米颗粒，外围薄层为石墨碳层。碳纳米管的外径在30~40 nm范围内，壁厚5~8 nm，内部填充的纳米颗粒呈球形和椭球形，粒径均匀。

Abstract:

Ni nanoparticles filled carbon nanotubes were prepared by anodic arc discharging plasma. The composition, the morphology and the phase structure of the products by this process were investigated via the high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy and X-ray energy dispersive spectrometry (XEDS). The present experiment technology can obtain great amount of the carbon nanotubes filled with metallic nanoparticles, it means that inside there are Ni nanoparticles with fcc structure, outside thin layers are well-graphitized nanotubes. The diameter of carbon nanotubes ranges from 30 to 40 nm, the wall thickness is approximately 5~8 nm, and the particles encapsulated in carbon nanotubes are scattered homogeneously in spherical or ellipsoidal shapes.