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Simultaneous purification and functionalization of carbon nanotubes using chlorination

Published online by Cambridge University Press:  31 July 2012

Iwona Pełech ,
Urszula Narkiewicz ,
Dariusz Moszyński  and
Robert Pełech
Iwona Pełech*
Affiliation:
Faculty of Chemical Engineering, Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland
Urszula Narkiewicz
Affiliation:
Faculty of Chemical Engineering, Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland
Dariusz Moszyński
Affiliation:
Faculty of Chemical Engineering, Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland
Robert Pełech
Affiliation:
Faculty of Chemical Engineering, Institute of Organic Chemical Technology, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Multiwalled carbon nanotubes (MWCNTs) obtained using ethylene as a carbon source and nanocrystalline iron as a catalyst were used as the initial material. The functionalization of MWCNTs was carried out using chlorine in the liquid and gas phase. In the second case, the reaction was conducted in the temperature range from 50 to 450 °C for 2 h. The presence of chlorine species on the surface of chlorinated samples was confirmed by x-ray photoelectron spectroscopy (XPS). A quantitative analysis of metal impurity content was validated by means of thermogravimetric analysis. Better results of metal removal were achieved when the chlorination process was conducted in the gas phase and the ratio of metal in samples amounted from 2.3% to 5.1%.

Keywords

nanostructurepurificationx-ray photoelectron spectroscopy (XPS)
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 18 , 28 September 2012 , pp. 2368 - 2374
Copyright
Copyright © Materials Research Society 2012

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