Synthesis of vertically aligned single- and double-walled carbon nanotubes without etching agents
Document Type
Article
Publication Date
6-20-2007
Department
Department of Physics
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.
Publication Title
The Journal of Physical Chemistry C
Recommended Citation
Kayastha, V.,
Wu, S.,
Moscatello, J. P.,
&
Yap, Y. K.
(2007).
Synthesis of vertically aligned single- and double-walled carbon nanotubes without etching agents.
The Journal of Physical Chemistry C,
111(28), 10158-10161.
http://doi.org/10.1021/jp073551l
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/62
Publisher's Statement
© 2007 American Chemical Society. Publisher's version of record: https://doi.org/10.1021/jp073551l