Development of Carbon Nanostructures in an Intermediate Prepared from Sol-Gel Process

Abstract:

We report the observation of the carbon nanostructures simply obtained from the sol-gel process using zirconium alkoxide with subsequent heat-treatment. A Raman study showed that the well-defined D and G active modes in multi-walled carbon nanotube similarly appeared in the sample prepared at 350
and 400
. Those disappeared when the sample was heat-treated above 450
, at which its phase fully transformed to zirconia. We observed through HRTEM that either sphere or tube-like carbon nanostructure appeared dispersedly or in a cluster among the oxide aggregates at 350
and 400
. Our study demonstrated that both of the two carbon nanostructures occurred in an intermediate related to carbonization, which may exist during the heat-treatment even in air

• Periodical: Solid State Phenomena (Volumes 124-126)
• Pages: 775-778
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.124-126.775
• Online since: June 2007
• Authors: Kyu Suk Han, Tae Gyung Ko
• Keywords: Carbon Nanostructures, Carbonization, Sol-Gel Process, Zirconium Alkoxide

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