碳纳米管(CNT)是纳米碳中最具代表性的物质。CNT的制法有石墨电极电弧法、激光蒸发法、催化气相成长法(CCVD)等。CCVD法是代表性方法,在高纯度、大量生产及结构可控方面数CCVD法较好。CCVD法是以铁纳米粒子作为催化剂,可大量生产CNT的方法。最近可制造成长单层、双层、多层CNT( Carbon nanotubes (CNTs) are the most representative substances in nanocarbons. The CNT method is graphite electrode arc method, laser evaporation method, catalytic vapor phase growth method (CCVD) and so on. The CCVD method is a representative method, and CCVD method is superior in terms of high purity, mass production and structural control. The CCVD method is a method that can mass-produce CNTs using iron nano-particles as a catalyst. Recently can be made to grow single-layer, double-layer, multi-layer CNT