Synthesis of Carbon Nanotube Bundles by CCVD of Methane over Fe-Co-La/MgO Catalyst

Carbon nanotubes (CNTs) bundles were synthesized by catalytic chemical vapor deposition CCVD of methane over Fe-Co-La/MgO catalyst. Decomposition of methane was carried out at 980 °C for 30 min in gas stream of H2/N2/CH4 with 4:70:30 mole ratio and total flow rate of 104 ml/min. Raman spectroscopy and transmission electron microscopy were used for characterization of CNTs structure and morphology. Average diameter of the tubes was estimated to be below 3 nm from Radial Breathing Mode (RBM) of CNTs. TEM results showed CNTs formed in bundles

کلیدواژه ها:

carbon nanotube ، catalytic chemical vapor deposition ، CCVD ، raman spectroscopy ، catalyst ، methane