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Synthesis of multi-walled and single-walled nanotubes, aligned- nanotube bundles and nanorods by employing organometallic precursors

Rao, CNR and Govindaraj, A and Sen, Rahul and Satishkumar, BC (1998) Synthesis of multi-walled and single-walled nanotubes, aligned- nanotube bundles and nanorods by employing organometallic precursors. In: Materials Research Innovations, 2 (3). pp. 128-141.

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Abstract

Pyrolysis of organometallic precursors such as metallocenes and iron pentacarbonyl as well as of their mixtures with hydrocarbons such as acetylene or benzene has been carried out under a variety of conditions to synthesize nanotubes. While the use of benzene as a hydrocarbon source generally yields multi-walled nanotubes, it has been possible to obtain single- walled nanotubes (similar to 1 nm diameter) by pyrolyzing a metallocene or a mixture of metallocenes along with acetylene under a high flow rate of Ar. These experiments show that the organometallic precursor produces small nanoparticles of similar to 1 nm diameter which then catalyze the formation of the single-walled nanotubes. Copious quantities of aligned- nanotube bundles have been obtained by the pyrolysis of acetylene in the presence of high concentrations of ferrocene. Nanorods have been produced by the pyrolysis of ferrocene under vacuum. Single walled nanotubes can be filled or decorated by metals.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Springer-Verlag
Keywords: Carbon nanotubes;Single-walled nanotubes;Aligned nanotube bundles;Nanorods
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 09 Sep 2004
Last Modified: 19 Sep 2010 04:14
URI: http://eprints.iisc.ernet.in/id/eprint/1390

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