Spectroscopic Study of Large-Scale Synthesized, Nitrogen-doped carbon Nanotubes using Spray Pyrolysis Technique

Abstract

Highly pure and aligned nitrogen-doped carbon nanotubes were synthesized by catalytic spray pyrolysis technique at 850°C using precursor; acetonitrile and ferrocene solution. Precursor solution with different concentrations of ferrocene in acetonitrile was introduced into the horizontally aligned reactor at a constant flow rate (∼1ml/min) with Ar gas serving as the carrier (∼50/500l/h). An optimum concentration of ferrocene in acetonitrile is 5mg/ ml. The structure of the synthesized N-CNTs was investigated by means of microscopic (SEM) as well as spectroscopic (FTIR, Raman, XRD, UV-Vis) techniques. The results show that the prepared N-doped CNTs have a uniform structure and high yield of N-CNTs is obtained.