Catalytically grown carbon nanotubes were prepared by in situ thermal decomposition of the polymer materials. Polymer material (PEG, polyethylene glycol) was employed as carbon source and nickel-based materials were used as catalytic precursors. These materials were well mixed and thermal treated at the desired temperature. The synthesis process includes the removal of solvent, dehydrogenation, thermal decomposition, carbonization, graphitization, and formation of carbon nanotubes by catalytic effects.. The results showed that carbon nanotubes can be formed without any additional hydrocarbon gases during the fabrication process at 750℃ in the nitrogen atmosphere. By the field emission–scanning electron microscopy (FE-SEM) and high resolution-transmission electron microscopy (HR-TEM) observation, it revealed that the carbon nanotubes possesses highly graphitic structures and the diameters were about 20-30nm.
Journal: TechConnect Briefs
Volume: 1, Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show, Volume 1
Published: May 7, 2006
Pages: 121 - 124
Industry sector: Advanced Materials & Manufacturing
Topic: Carbon Nano Structures & Devices