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Journal of Nanomaterials
Volume 2015 (2015), Article ID 395014, 7 pages
http://dx.doi.org/10.1155/2015/395014
Research Article

Functionalization of Carbon Nanofibres Obtained by Floating Catalyst Method

1Centro de Investigación en Nanomateriales y Nanotecnología (CINN) (CSIC, Universidad de Oviedo, Principado de Asturias), Avenida de la Vega 4-6, 33940 El Entrego, Spain
2Moscow State University of Technology (STANKIN), Vadkovskij per. 1, Moscow, Moscow Oblast, Russia
3Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, Spain

Received 27 January 2015; Accepted 13 March 2015

Academic Editor: Nay Ming Huang

Copyright © 2015 Adolfo Fernández 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

The excellent physicochemical and electrical properties of carbon nanofibres (CNF) combined with the possibility of being produced at industrial scale at reasonable costs have promoted the interest in their use in very diverse areas. However, there are still some drawbacks that must be solved in order to optimize their set of properties such as the presence of impurities or the imperfections in the crystalline structure. In this work, different modification treatments of CNFs produced by the floating catalyst method have been studied. Three types of modification processes have been explored that can be grouped as mechanical, thermal, and chemical functionalization processes. Mechanical processing has allowed solving the agglomeration problem related to CNFs produced by floating catalyst method and the resulting modified product ensures the secure handling of carbon nanofibres. Thermal and chemical treatments lead to purer and more crystalline products by removing catalyst impurities and amorphous carbon. Functionalization processes explored in this work open the possibility of customized posttreatment of carbon nanofibres according to the desired requirements.