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Journal of Nanomaterials
Volume 2014, Article ID 313095, 5 pages
http://dx.doi.org/10.1155/2014/313095
Research Article

Carbon Nanofibers from Carbon Nanotubes by 1.2 keV Sputtering at Room Temperature

Department of Physics and Electronic Engineering, Taizhou University, Taizhou, 318000, China

Received 6 December 2013; Accepted 14 January 2014; Published 20 February 2014

Academic Editor: S. C. Wang

Copyright © 2014 Shuang-Xi Xue 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

Multi-walled carbon nanotubes (MWCNTs) were irradiated by 1.2 keV Ar ion beams for 15–60 min at room temperature with current density of 60 µA/cm2. The morphology and microstructure are investigated by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The results show that carbon nanofibers are achieved after 60 min ion irradiation and the formation of carbon nanofibers proceeds through four periods, carbon nanotubes—amorphous carbon nanowires—carbon nanoparticles along the tube axis—conical protrusions on the nanoparticles surface—carbon nanofibers from the conical protrusions.