Evaluation of catalyst ball-milling process on growth and diameter of carbon nanotubes on iron nanoparticles

In this study, we describe the growth of carbon nanotubes on commercial iron nanoparticles without carbon shell (Fe (nm), size ۲O۳ and Fe* (nm)/MgO) was carried out by mixing commercial Fe* nanoparticles (as catalyst) with Al۲O۳ and MgO powders (as supports)by using ball-milling method. The results show in spite of the fact that ball-milling process can have negative effects on diameter and morphology of synthesized CNTs at ۹۲۵ ˚C, but it could increase the range of growth temperature from ۸۶۵ ˚C to ۹۷۵ ˚C.