Preparation of Carbon Nanotubes by Catalytic Decomposition of Alcohol at Low Pressure
Pisanunak Chiwsitthiprapai [a], Sutichai Chaisitsak*[a] and Pavan Siamchai [b]* Author for corresponding; e-mail address: kcsutich@kmitl.ac.th
Volume :Vol.32 No.3 (SEPTEMBER 2005)
Research Article
DOI:
Received: -, Revised: -, Accepted: -, Published: -
Citation: Chiwsitthiprapai P., Chaisitsak S. and Siamchai P., Preparation of Carbon Nanotubes by Catalytic Decomposition of Alcohol at Low Pressure, Chiang Mai Journal of Science, 2005; 32(3): 427-432.
Abstract
We report the fabrications of carbon nanotubes (CNTs) by hot filament CVD under a ow precursor, using alcohol as a carbon source. The comparative studies of the properties of the nanotubes have been carried out by varying alcohol type, growth temperature and catalyst material. The obtained CNTs are characterized by scanning electron microscopy (SEM) and Raman spectroscopy. The results show that the Fe-Co catalyst with zeolite can synthesis CNTs at a low temperature and provide small tube, compared the catalyst without zeolite. CNTs with small diameter can be obtained from methanol using a catalyst without zeolite. According to the Raman spectroscopy, the purity of the CNTs is comparable to the other previous reports.