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Journal of Nanomaterials
Volume 2013, Article ID 836281, 9 pages
http://dx.doi.org/10.1155/2013/836281
Research Article

Chlorination of Carbon Nanotubes Obtained on the Different Metal Catalysts

1Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology in Szczecin, Pułaskiego 10, 70-310 Szczecin, Poland
2Institute of Organic Chemical Technology, West Pomeranian University of Technology in Szczecin, Pułaskiego 10, 70-310 Szczecin, Poland
3Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland

Received 10 October 2013; Accepted 29 November 2013

Academic Editor: Chunyi Zhi

Copyright © 2013 Iwona Pełech 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.

Abstract

In this paper, a chlorination method is proposed for simultaneous purification and functionalization of carbon nanotubes, thus increasing their ability to use. Carbon nanotubes were obtained by CVD method through ethylene decomposition on the nanocrystalline iron or cobalt or bimetallic iron-cobalt catalysts. The effects of temperature (50, 250, and 450°C) in the case of carbon nanotubes obtained on the Fe-Co catalyst and type of catalyst (Fe, Co, Fe/Co) on the effectiveness of the treatment and functionalization were tested. The phase composition of the samples was determined using the X-ray diffraction method. The quantitative analysis of metal impurity content was validated by means of the thermogravimetric analysis. Using X-ray Photoelectron Spectroscopy (XPS), Energy Dispersive Spectroscopy (EDS) analysis, and also Mohr titration method, the presence of chlorine species on the surface of chlorinated samples was confirmed.