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J. Korean Ceram. Soc. > Volume 58(5); 2021 > Article
Journal of the Korean Ceramic Society 2021;58(5): 559-565.
doi: https://doi.org/10.1007/s43207-021-00123-7
Synthesis of carbon nanotubes on silicalite-1-coated biomorphic materials
Jung Gyu Park2, Young-Hwan Han3, Ik Jin Kim1
1Department of Materials Science and Engineering, Institute for Processing and Application of Inorganic Materials (PAIM), Hanseo University, #46, Hanseo 1-ro, Haemi-myun, Seosan-si, Chungnam 31962, South Korea
2Korea Institute of Ceramic Engineering and Technology (KICET), 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28160, Republic of Korea
3International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China
Correspondence  Ik Jin Kim ,Email: ijkim@hanseo.ac.kr
Received: December 24, 2020; Revised: April 20, 2021   Accepted: May 5, 2021.  Published online: September 30, 2021.
ABSTRACT
The effect of the metal catalyst used in the synthesis of carbon nanotubes (CNTs) on biomorphic carbon materials (BCMs) coated with silicalite-1 was investigated in this study. BCMs with a hexagonal honeycomb structure and a pore size of 20–35 μm were prepared by carbonizing cypress in an Ar atmosphere. Then, silicalite-1 crystals were synthesized and uniformly coated on the BCMs through an in situ hydrothermal process. The CNTs were synthesized and grown by the chemical vapor deposition of acetylene (C2H2) in and outside the pores of catalyst Co, Fe, Ni, and Cu nanoparticles supported in the BCMs. The improved yield and crystallinity of CNTs were evaluated according to the catalyst particles. CNTs with inner and outer diameters of 7.67 and 21.81 nm, respectively, were used, and the synthesis at 650 °C for 120 min with Co nanoparticles led to a yield of 11.10%, and the ID/IG of 1.05 of CNTs was obtained.
Key words: Carbon nanotubes · Biomorphic materials · Silicalite-1 · Metal catalyst · Yield
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