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Fabrication of a Composite Structure of Three-dimensional Macroporous Silica and Carbon Nanofilaments

Published online by Cambridge University Press:  03 March 2011

S.M. Park*
Affiliation:
Department of Chemical, Biomedical, and Materials Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030
H. Li
Affiliation:
Materials Engineering, Division of Engineering, Brown University, Providence, Rhode Island 02912
B. Sheldon
Affiliation:
Materials Engineering, Division of Engineering, Brown University, Providence, Rhode Island 02912
H. Du
Affiliation:
Department of Chemical, Biomedical, and Materials Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030
*
a) Address all correspondence to this author. Present address: Department of Chemical and Environmental Engineering, Illinois Institute of Technology, Chicago, IL 60616. e-mail: park@iit.edu, spark@stevens.edu
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Abstract

We explored the possibility of incorporating carbon nanotubes in a patterned and macroporous silica structure replicated from a thin polystyrene template. A V-shaped thin, vertical channel was constructed and successfully used to assemble 10.06-μm polystyrene spheres into a dense three-dimensionally ordered template of uniform thickness. Infiltration of a single Co/silica precursor sol into the template followed by thermal treatments in vacuum and H2 produced three-dimensionally ordered silica pores with embedded Co nanoparticles. Wormlike carbon nanofilaments of 50–120 nm in diameter were grown on the inner surface of silica pores with plasma-enhanced chemical vapor deposition.

Type
Articles
Copyright
Copyright © Materials Research Society 2005

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References

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