Formation of Multi-Walled Carbon Nanotubes by Catalytic Chemical Vapour Deposition Using Zeolite Encapsulated Nanocrystalline Cobalt Oxides
Wei Zhao
Institute for Processing and Application of Inorganic Materials, Department of Materials Science and Engineering, Hanseo University, 360 Daegok-ri, Haemi-myun, Seosan city 356-706, Chungnam, South Korea
Mi Jai Lee
Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology, Icheon 467-84, Kyoung-gi do, South Korea
Hyung Tae Kim
Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology, Icheon 467-84, Kyoung-gi do, South Korea
Yoo Jin Kim
Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology, Icheon 467-84, Kyoung-gi do, South Korea
Jianghong Gong
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China
Ik Jin Kim
Institute for Processing and Application of Inorganic Materials, Department of Materials Science and Engineering, Hanseo University, 360 Daegok-ri, Haemi-myun, Seosan city 356-706, Chungnam, South Korea
Corresponding Author(s) : Wei Zhao
zhao-w05@mails.tsinghua.edu.cn
Asian Journal of Chemistry,
Vol. 23 No. 12 (2011): Vol 23 Issue 12
High yield multiwalled carbon nanotubes (MWNTs) were synthesized on Co-suppoted faujasitetype zeolite (FAU) by catalytic chemical vapour deposition (CCVD) using acetylene as the carbon source. Well-shaped faujasite-type zeolite (FAU) octahedral crystals of a size of 15 μm were synthesized by the hydrothermal method in a mother solution which has a composition of 3.5 Na2O : Al2O3 : 2.1 SiO2 : 1000 H2O. The effect of the Co content in the zeolite crystals on the synthesis of carbon nanotubes was investigated through high resolution transmission electron microscopy (HRTEM), field emission microscopy (FESEM), thermogravimetic analysis (TGA) and Raman spectroscopy. The inner and outer tube diameters of the synthesized multiwalled carbon nanotubes were in the range of 5.7-11.6 nm and 11.0-30.2 nm, respectively. With increasing Co content supported in the zeolite template, the carbon yield showed a monotonic increasing tendency, reaching 60.4 % when the Co content was up to 11.5 wt%.
Zhao, W., Jai Lee, M., Tae Kim, H., Jin Kim, Y., Gong, J., & Jin Kim, I. (2011). Formation of Multi-Walled Carbon Nanotubes by Catalytic Chemical Vapour Deposition Using Zeolite Encapsulated Nanocrystalline Cobalt Oxides. Asian Journal of Chemistry, 23(12), 5457–5460. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/11165
