Abstract
Carbon nanotubes (CNT) were synthesized from size-classified catalyst metal nanoparticles to observe the effect of the nanoparticle's diameter on the diameter of the CNT. The nanoparticles were generated by laser vaporization and classified by a DMA (Differential Mobility Analyzer), which sorts them by diameter according to differences in electrical mobility. CNT were synthesized from these catalyst metal nanoparticles by using chemical vapor deposition (C_2H_2 is employed as a carbon sourse). CNTs and the particle diameter distributions of the metal nanoparticles were observed by TEM. It is found that particle diameter distributions of the metal nanoparticles are almost same with synthesized CNT. The effects of hydrogen on CNT synthesis is also studies and it is found that a concentration of hydrogen affect CNT growth significantly.
