Synthesis of aligned carbon nanotubes by C[sub 2]H[sub 2] decomposition on Fe(CO)[sub 5] as a catalyst precursor

Abstract

Aligned carbon nanotubes are simply synthesized in a single step by the thermal decomposition of gaseous mixture of C2H2 and Fe(CO)5 as a catalyst precursor. Multi-walled carbon nanotubes were produced on the most of the heated zone of the furnace with high packing density. The diameter and length is 20–50nm and about 55 μm, respectively. The flow rate and temperature plays critical role in the synthesis of carbon nanotubes.