Synthesis of Carbon Nanotubes for Device Applications

Abstract

In this work, we report the growth of carbon nanotubes (CNTs) on iron-yttrium (FeY) bimetallic catalyst using thermal chemical vapour deposition technique. The catalysts were prepared by dry impregnation method and characterized by XRD. The XRD analysis shows that the catalyst particle size is < 5 nm with no presence of graphitic structures around the nanoparticles. HRTEM and TGA analyses were used to characterize the as grown CNTs. The TGA analysis shows that the grown CNTs are very stable at high temperature. The HRTEM images show that the CNTs are in bundled form with and of high degree of graphitization. The grown CNTs are very useful for device applications like sensors, filters, capacitors and in batteries.