Study on Diameter Controlled Growth of Carbon Nanotubes by LaAl1-xFexO3 Catalysts

Chemical Research in Chinese Universities ›› 2005, Vol. 21 ›› Issue (1): 4-7.

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Study on Diameter Controlled Growth of Carbon Nanotubes by LaAl_1-xFe_xO₃ Catalysts

PENG Feng, WANG Hong-juan

Department of Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China

Received:2003-12-31 Online:2005-01-24 Published:2011-07-27
Supported by:
Supported by the Natural Science Foundation of Guangdong Province(No.031420), the Guangzhou City Science and Technology Project(No.2003Z3-D2071) and the Science and Technology Project of Guangdong Province(No.2003C33505).

Abstract

Abstract: A series of LaAl_1-xFe_xO₃ catalysts prepared with lanthanum nitrate, aluminium nitrate and iron nitrate was investigated in catalytical syntheses of carbon nanotubes with high yields and purity.The properties of carbon nanotubes prepared by the method of CVD(chemical vapor deposition) with n-hexane as the carbon resource were studied and it was shown that the diameter of carbon nanotubes can be controlled by the molar ratio of iron to aluminum in the catalysts and that the diameter of carbon nanotubes changes a little with the decrease of the iron content in the catalysts.From the TEM pictures of carbon nanotubes, it can be found that the LaAl_1-xFe_xO₃ catalysts have a significant influence on the wall thickness of the carbon nanotubes, whereas they have little influence on the inner diameter of the carbon nanotubes.

Key words: Carbon nanotube, LaAl_1-xFe_xO₃, Chemical vapor deposition, Diameter controlled, Catalyst

PENG Feng, WANG Hong-juan. Study on Diameter Controlled Growth of Carbon Nanotubes by LaAl_1-xFe_xO₃ Catalysts[J]. Chemical Research in Chinese Universities, 2005, 21(1): 4-7.

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Study on Diameter Controlled Growth of Carbon Nanotubes by LaAl_1-xFe_xO₃ Catalysts

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