NANOTUBE'04 Conference:
CVD SYNTHESIS OF SINGLE-WALL CARBON NANOTUBES FROM ETHANOL
G. Ortega-Cervantez, G. Rueda-Morales and J. Ortiz-López
We have implemented a chemical vapor deposition (CVD) system for the synthesis of single-wall carbon nanotubes using ethanol as the carbon source. Our system is based on the one described by Maruyama et al. [1]. In our case, we use and test several substrates such as quartz, conductive glass (tin oxide film deposited on soda-lima glass), porous alumina and TEM copper grids. Acting as catalysts, ethanol solutions of hydrated cobalt acetate (CH3CO2)2Co-4H2O and iron acetate (CH3CO2)2Fe are deposited on the substrates and allowed to dry. The substrates are placed inside a quartz tube inserted into a cylindrical oven. Ethanol vapor is injected when the temperature of the substrates is raised to 600 oC. Our samples are analyzed with atomic force microscopy as well as with scanning electron microscopy.
References:
1. S. Maruyama et al., Chem. Phys. Lett., 362, 229 (2002).
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