Tapered Carbon Nanotubes from Activated Carbon Powders


  • This work was performed through the Special Coordination Funds for Promoting Science and Technology from the Ministry of Education, Culture, Sport, Science, and Technology of the Japanese Government. Supporting Information is available online from Wiley InterScience or from the author.


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Tapered carbon nanotubes (TCNTs) are produced from activated carbon powders via simple thermal catalytic reactions in which the carbon nanotubes grow though a Sn-catalyzed vapor–liquid–solid growth process. The tapered nanotubes are well aligned and have a length of several tens of micrometers (see Figure).