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Citation: Wei Zhong, Chen Yan, Liu Zhong-Fan. CVD Synthesis and Diameter Distribution of SingleWalled Carbon Nanotubes[J]. Acta Physico-Chimica Sinica, ;2001, 17(08): 718-722. doi: 10.3866/PKU.WHXB20010810 shu

CVD Synthesis and Diameter Distribution of SingleWalled Carbon Nanotubes

1.
Center of Nanoscale Science and Technology, College of Chemistry ＆Molecular Engineering, Peking University,Beijing　100871

Received Date: 27 February 2001
Available Online: 15 August 2001

Singlewalled carbon nanotubes (SWNTs) were synthesized by the decomposition of methane on Al2O3 supported Fe,Co,Ni,Ru catalysts at 850 ℃. The diameters of the single walled carbon nanotubes were in the range of 0.8～5 nm. The amorphous carbon impurity could be reduced by pretreatment of catalysts at 1100 ℃. Raman spectra showed that the diameter distributions of the SWNTs were mainly influenced by the reaction temperature. At lower temperature small diameter nanotubes were favored and better selectivity of diameter could be achieved.
- Single-walled carbon nanotubes;CVD;Raman spectroscopy;Diameter distribution
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