Gas-phase production of carbon single-walled nanotubes from carbon monoxide via the HiPco process: A parametric study

  title={Gas-phase production of carbon single-walled nanotubes from carbon monoxide via the HiPco process: A parametric study},
  author={Michael J. Bronikowski and Peter A. Willis and Daniel T. Colbert and Kenneth A. Smith and Richard E. Smalley},
  journal={Journal of Vacuum Science and Technology},
We have demonstrated large-scale production (10 g/day) of high-purity carbon single-walled nanotubes (SWNTs) using a gas-phase chemical-vapor-deposition process we call the HiPco process. SWNTs grow in high-pressure (30–50 atm), high-temperature (900–1100 °C) flowing CO on catalytic clusters of iron. The clusters are formed in situ: Fe is added to the gas flow in the form of Fe(CO)5. Upon heating, the Fe(CO)5 decomposes and the iron atoms condense into clusters. These clusters serve as… 

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