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Synthesis of highly oriented carbon nanotube thin films by nickel functionalisation

Titus, E.T. ; Cabral, G.C. ; Mendes, J. C. ; Neto, V. Neto ; Shokufar, T.S. ; Blau, W.J.B. ; P. Ramesh Babu, P.R.B. ; Misra, D.S.M.

Diamond and Related Materials Vol. 16, Nº 4-7, pp. 1195 - 1199, April, 2007.

ISSN (print): 0925-9635
ISSN (online):

Journal Impact Factor: 1,913 (in 2011)

Digital Object Identifier: 10.1016/j.diamond.2006.11.033

A novel method for fabricating thin films of oriented and densely packed metal functionalised carbon nanotubes (m-CNT) on silicon substrates is described. Positively charged metal ion from their salt solution was adsorbed on carboxylic acid funtionalised (f) CNT by electrostatic interaction. Subsequently, the aqueous dispersion of m-CNT was cast on silicon substrate forming m-CNT thin films after evaporation. Thin films of f-CNT and m-CNT were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) and Raman spectroscopy analysis. The mechanism of functionalisation and orientation of CNTs is discussed briefly.