Articles
  • Harmonized processing of biomorphic materials for the synthesis of carbon nanotubes
  • Jung Gyu Parka, Bijay Basneta, Se Young Kimb, Suk Young Kimc and Ik Jin Kima,*
  • a Institute for Processing and Application of Inorganic Materials, (PAIM), Department of Materials Science and Engineering, Hanseo University, #46, Hanseo 1-ro, Haemi-myun, Seosan-si, Chungnam 31962, Korea b Korea Institute of Energy Research(KIER), #152, Gajeong-gu, Daejeon 34129, Korea c School of Materials Science & Engineering, Yeungnam University, Gyeongsan-si, Gyeongbuk 38541, Korea
Abstract
A three-step process was carried out to form carbon nanotubes (CNTs) on a biomorphic carbon template (BCT). First, natural wood with 20-μm pores was transformed into a carbon template via carbonization pyrolysis. Thereafter, LTA zeolite crystals were synthesized to have a crystal size of 0.3 μm, and an in situ hydrothermal process was used to coat the BCT with a single, homogeneous zeolite layer. Finally, CNTs were synthesized on the zeolite-coated biomorphic carbon template (ZCBCT) via catalytic chemical vapor deposition (CCVD) with acetylene (C2H2) as a carbon source. In this study, we focused on varying the reaction time and temperature to improve the CNT yield and assess the morphology, crystallinity, and yield percentage of the CNTs. Multi-walled CNTs with an inner diameter of 10.7 nm were synthesized at 650 oC, and a maximum CNT yield of 7.09% was obtained at 180 min

Keywords: Carbon nanotubes, Biomorphic carbon template, Carbonization, Hydrothermal, Catalytic chemical vapor deposition

This Article

  • 2017; 18(8): 575-579

    Published on Aug 31, 2017