Carbon nanotubes by spray pyrolysis of turpentine oil at different temperatures and their studies

The carbon nanotubes (CNTs) synthesized by simple method of spray pyrolysis and their characteristics were investigated. Turpentine oil: a plant based precursor was used as source of carbon and nitrogen as the carrier gas. CNTs were synthesized at different temperatures ranging from 500 to 900 °C with interval of 100 °C. At different temperatures, the characteristics of CNTs markedly changes such as crystallinity, diameter, etc. confirmed by SEM, TEM, HRTEM and Raman spectroscopy studies. The bimetallic catalyst of Co and Fe supported on silica gel particles improves the quality, quantity and uniformity of CNTs.