Vertically Aligned Growth of Single-Walled Carbon Nanotubes on an Fe-Mo/MgO/Si Substrate Prepared by Using a Dipping Method Combined with an UV-Ozone Treatment

Single-walled carbon nanotubes (SWCNTs) having high density were synthesized on both Fe-Mo/Si and Fe-Mo/MgO/Si substrates by using thermal decomposition Of C(2)H(2) at 800 degrees C. By applying an ultraviolet-irradiated-ozone (UV-ozone) treatment to the substrate, high-density catalyst nanoparticles could be attached to not only a Si substrate but also a MgO/Si substrate by using a dipping method. The vertically aligned SWCNTs were successfully synthesized on a MgO/Si substrate after NH(3) pretreatment. Scanning electron microscopy, transmission electron microscopy and Raman spectroscopy were used to characterize the catalyst and the SWCNTs.