论文部分内容阅读
利用特制的电弧放电装置,研究了水或液氮中碳电弧放电形成炭纳米材料的机理。借助高分辨率透射电子显微镜对电弧放电生成的产物进行了观察和分析。结果表明:在水或液氮中碳电弧放电可以生成多壁碳纳米管和碳纳米洋葱结构,液氮中碳电弧放电可以生成单壁碳纳米角,水中钴催化碳电弧放电可以生成碳包裹的纳米钴颗粒。横向低频交变磁场会影响碳纳米材料的形核过程,并且可以推测磁场交变的频率5Hz与纳米管、纳米洋葱等结构的生长周期存在某种拟合。根据实验现象,提出了一种解释液体中碳电弧放电过程纳米材料生成的理论模型。
Using a special arc discharge device, the mechanism of the formation of carbon nanomaterials by carbon arc discharge in water or liquid nitrogen was studied. The products of arc discharge were observed and analyzed by high resolution transmission electron microscopy. The results show that carbon arc discharge in water or liquid nitrogen can produce multi-walled carbon nanotubes and carbon nano-onion structure. Carbon arc discharge in liquid nitrogen can generate single-walled carbon nanohorns, and carbon in water can generate carbon-wrapped carbon arc Nanometer cobalt particles. Lateral low-frequency alternating magnetic field can affect the nucleation process of carbon nanomaterials, and it can be inferred that there is some fitting between the alternating frequency of 5Hz and the growth cycle of nanotubes, nanoscale onions and other structures. According to the experimental phenomena, a theoretical model for explaining the formation of nanomaterials during carbon arc discharge in liquid was proposed.