Synthesis Of Carbon Nanotubes And Iron Oxide Nanoparticles In Mw Plasma Torch With Fe(co)_5 In Gas Feed

摘要

The MW plasma torch (2.45 GHz) in the mixture of CH_4/H_2/Ar (42/430/1540 sccm) with added Fe(CO)_5vapors was used for the synthesis of iron oxide nanoparticles and carbon nanotubes. The particles with well-defined facets consisting of Fe_3O_4 and γ-Fe_2O_3 and self-assembled into long chains were produced at the power of 360 W. At higher power of 440-460 W the deposit contained significant amount of multi-walled carbon nanotubes covered by iron oxide nanoparticles. The diameter of CNTs was 8-20 nm. The particles had Fe_3O_4 and/or α-Fe_2O_3 cores of spherical shape covered by a thin layer of carbon.