抄録
The first specimen, which was used by Iijima to discover carbon nanotubes (CNTs), was prepared by arc discharge evaporation of graphite by the present author. After then, the arc discharge evaporation is one of the powerful methods to produce CNTs. Here, the growth condition of CNTs in arc discharge method is reviewed, especially focused on the kind and the pressure of environmental gas for multiwalled carbon nanotubes (MWNTs) growth. Pure H_2 gas atmosphere for arc discharge evaporation is effective to prepare MWNTs having highly crystallized and extremely thin innermost tubes, In the case of single wall carbon nanotubes (SWNTs) growth by arc discharge evaporation, the kind of catalyst also plays an important role. Arc evaporation of graphite rod including iron catalyst in H_2 and Ar mixed gas produces macroscopic SWNTs Web.
