The basic research of the large synthesis of single-walled carbon nanotubes using the AC arc discharge

碳纳米管下一代先进材料，由于碳纳米管所具有的可能性已成为现实，因此建立大规模的碳纳米管制造方法是不可能的，也是一个重要的问题。为了解决这一问题，目前世界各国的研究机构都集中了巨大的精力进行研究和开发。此后，人们尝试了各种方法来大规模制造单壁碳纳米管。我们的目标是利用交流电弧放电的碳蒸发高效产生SWNT。与以往的直流电弧放电方法相比，由于碳材料沉积物不会在负极形成，因此可以有效地形成单壁碳纳米管。本研究旨在探讨在何种条件下SWNT的发电效率提高最多。可能的碳原子和分子被周长的氦气蒸发冷却，当它消失时，石墨棒和金属催化剂在高温下通过迭代电流电弧，它们再次结合，成为固体。这似乎是控制因素之一，它的优点和缺点，直到它的时间变化到固体从这种蒸发影响SWNT合成效率的好坏。然后，反复使用与电炉相结合的蒸发器与易于控制温度梯度的电极相结合，直到其成为SWNT，通过蒸发来实现碳原子分子的结合，从而达到实验的水平。

Carbon nanotube advanced material next generation, since the possibility which the carbon nanotube had is made to be a thing of the actuality, it is not possible and important problem of lacking the establishment of the large manufacture method of carbon nanotube. For the achievement of this problem, the energy which is enormous in the research institute in all over the world for the research and development at present is concentrated.Ever since, various methods have been tried the large manufacturing method of single-walled carbon nanotube (SWNT). We have aimed at the high-efficient generation of SWNT by carbon evaporation using the AC arc discharge. In this method, it has been shown that to efficiently form the SWNT in comparison with DC arc discharge method ever, because the carbon material sediment is not formed in the negative electrode, is possible.This study has been carried out for the purpose of investigating the condition in which generation efficiency of SWNT rises most. Possible carbon atom and molecule are cooled by this evaporation by me helium gas of me circumference, when it disappears graphite rod with metal catalyst in high temperature by iterating current arc, and they combine again, and it becomes a solid. It seems to be one of the controlling factors in which merits and demerits in the time until it changes to the solid from this evaporation influence good or bad of SWNT synthesis efficiency. Then, it repeatedly came using the evaporator which combined me electric furnace which contraposed the electrode which was easy to control temperature gradient of the interval until it becomes SWNT by that it is done how by the evaporation possible carbon atom molecule combining, levelely in respect of the experiment.