Optimization of Mass Flow in the Synthesis of Ferromagnetic Carbon Nanotubes in Chemical Vapor Deposition System

Abstract

Carbon nanotubes have unique properties, which make it possible to be applied in a variety of sensing applications. Moreover, by controlling the synthesis chemistry process, it is possible for carbon nanotubes to either fill or attach to its surface metal particles, e.g., iron. In an industrial scale, the yield and purity of the final product is very important. This work describes the chemical vapor deposition (CVD) method of carbon iron nanocontainers with maximum nanoparticles to impurities ratio. As one of the main parameters, the mass flow of gases was considered. To investigate the quality of the product, the scanning electron microscopy and thermogravimetric methods were used. Results for different process conditions were presented and discussed. The low gas velocity and high temperatures may affect the catalyst decomposition and ionization. The optimum flow and temperature in the reactor were determined.

The Electromagnetic Shielding Properties of Biodegradable Carbon Nanotube–Polymer Composites

“…The same reagent was used as the solvent to prepare the solution of CNTs and the PLA. The carbon nanotubes used in the described experiments were synthesized in our laboratory using the liquid source chemical vapor deposition (LSCVD) technique [3,14]. The apparatus was a three-zone oven with a temperature controller for each zone, connected to a liquid catalyst solution feeding system and a vapor carrying gas source.…”