Preparation of carbon nanotubes using ethanol precursor by spray pyrolysis / Nur Rashidah Abdul Razak

The carbon nanotubes (CNTs) were prepared using the cheap, simple and easy handling method of spray pyrolysis CVD method. Ethanol precursor was used as a source of carbon and ferrocene as a catalyst. Argon gas was used as the carrier gas through the spray pyrolysis system. CNTs were synthesized at different deposition temperatures ranging from 700°C to 850°C. The observation of the characterization CNTs by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) showed that at different temperatures, the characteristics of CNTs were different. The diameter of CNTs increases with increasing of temperature. The catalyst of ferrocene gives high yield of CNTs at temperature 700°C. At higher temperature up to 800°C, the catalyst can form the thicker tubes and large diameter of CNTs.