Carbon nanotubes (CNTs) have been synthesized by ferrocene-catalyzed pyrolysis of toluene. The influences of the experimental conditions on the morphology and microstructure of the product have been analyzed. To find the proper temperature for synthesis of CNTs, the experiment was performed in a temperature range from 800 to 1100℃. From content variation of ferrocene and thiophene as the catalyst, morphological change of carbon nanotubes has been observed. Also, the influence of the gas ratio of hydrogen and argon on the nanotube samples was analyzed by scanning electron microscopy and transmission electron microscopy.

• Young-Soo Park(Department of Polymer-nano Science and Technology, Chonbuk National University, Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Nanocomposites)
• Mong-Young Huh(Department of Polymer-nano Science and Technology, Chonbuk National University, Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Nanocomposites)
• Sin-Jae Kang(Department of Mechanical Design Engineering, Chonbuk National University, Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Nanocomposites)
• Seung-Hee Lee(Department of Polymer-nano Science and Technology, Chonbuk National University)
• Kay-Hyeok An(Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Nanocomposites) Corresponding Author