Jason Moscatello - Synthesis of Vertically Aligned Single- and Double-Walled Carbon Nanotubes without Etching Agents

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      Publication Details (including relevant citation   information):

      Vijaya Kayastha, Shun Wu, Jason Moscatello and Yoke Khin Yap

      Journal of Physical Chemistry C (Letter), Volume 111, Number 8,   Pages 10158-10161, 2007

      Abstract:

      The number of graphene shells on carbon nanotubes (CNTs) can be   rationally controlled to yield high-density, vertically aligned   single- and double-walled CNTs. This was obtained by thermal   chemical vapor deposition at 700 °C without the use of etching   agents such as water, oxygen, or plasma. The key factors for this   success are controlled dissociative adsorption of acetylene   (C2H2) molecules and subnanometer thickness   control of the Al/Fe/Mo trilayer films. We propose that an Al   concave meniscus confines the actual growth surface areas of   Fe/Mo catalytic nanoparticles and enables the control of the   number of graphene shells on CNTs.

      Address (URL): http://pubs.acs.org/doi/abs/10.1021/jp073551l