Chinese Science Bulletin

, Volume 49, Issue 1, pp 107–110 | Cite as

Preparation of double-walled carbon nanotubes



Double-walled carbon nanotubes were prepared using the floating chemical vapor deposition with methane as carbon source and adding small amount of sulfur into the ferrocene catalyst. The optimized technological parameters are: the reaction temperature is 1200°C; the catalyst vapor temperature is 80 °C; the flow rate of argon is 2000 SCCM; the flow rate of methane is 5 SCCM. The purified DWNTs under these optimized technological parameters have high purity above 90 wt%.


carbon nanotube double-walled carbon nanotube float-ing chemical vapor deposition 


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Copyright information

© Science in China Press 2004

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringTsinghua UniversityBeijingChina
  2. 2.Institute of Physics, Center for Condensed Matter Physics, Group 412Chinese Academy of SciencesBeijingChina

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