Table of Contents
ISRN Nanomaterials
Volume 2013, Article ID 785160, 7 pages
Research Article

Carbon Nanotubes Synthesis via Arc Discharge with a Yttria Catalyst

1Department of Chemical Engineering, University of Technology, 52 Al Sina’a Street, Baghdad, Iraq
2Department of Materials, Technical College, 54 Al Zafaraniya Street, Baghdad, Iraq
3School of Science and The Environment Staff, Division of Chemistry & Environmental Science, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK
4Department of Mechanical Techniques, Institute of Technology, 54 Al Zafaraniya Street, Baghdad, Iraq

Received 25 June 2013; Accepted 14 July 2013

Academic Editors: Y. Dai and X.-L. Dong

Copyright © 2013 M. I. Mohammad et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A facile method is proposed to use a computer controlled Arc discharge gap between graphite electrodes together with an yttria-nickel catalyst to synthesize carbon nanotubes under an Ar-H2 gases mixture atmosphere by applying different DC currents and pressure. This produces carbon nanotubes with decreased diameters and increased length. XRD evidence indicated a shift toward higher crystallinity nanotubes. Yields of the CNTs after purification were also enhanced.