Abstract The zeolite-supported catalysts were prepared in nickel and cobalt nitrate aqueous solutions by ion exchange method. After reducing these substrates by hydrogen, we grew carbon nanotubes on them by chemical vapor deposition under different conditions. The results reveal that nickel/zeolite, cobalt/zeolite and nickel+cobalt/zeolite have different optimal conditions. When nickel+cobalt/zeolite was used as the catalyst, we can get straight carbon nanotubes. The Raman spectrum of the straight nanotubes shows they have fewer defects. We propose a growth mechanism for the growth of these nanotubes.
Received: 02 November 1998
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 19774070).
Cite this article:
Sun Lian-feng (孙连峰), Mao Jian-min (毛健民), Chang Bao-he (常保和), Pan Zheng-wei (潘正伟), Wang Gang (王刚), Zhou Wei-ya (周维亚) STRUCTURE AND MORPHOLOGY OF CARBON NANOTUBES GROWN ON ZEOLITE-SUPPORTED CATALYSTS BY CHEMICAL VAPOR DEPOSITION 1999 Acta Physica Sinica (Overseas Edition) 8 545
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