Letter
Role of Water in Super Growth of Single-Walled Carbon Nanotube Carpets
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Air Force Research Laboratory.
, ‡Universal Technology Corporation.
, §Department of Physics and Astronomy, Rice University.
,
Department of Chemistry, Rice University.
,
School of Materials Engineering and Birck Nanotechnology Center, Purdue University.
, ¶UDRI, University of Dayton.
Abstract

The Ostwald ripening behavior of Fe catalyst films deposited on thin alumina supporting layers is demonstrated as a function of thermal annealing in H2 and H2/H2O. The addition of H2O in super growth of single-walled carbon nanotube carpets is observed to inhibit Ostwald ripening due to the ability of oxygen and hydroxyl species to reduce diffusion rates of catalyst atoms. This work shows the impact of typical carpet growth environments on catalyst film evolution and the role Ostwald ripening may play in the termination of carpet growth.
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This article has been cited by 37 ACS Journal articles (5 most recent appear below).

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Modeling of Ostwald Ripening of Metal Clusters Attached to Carbon Nanotubes
Anders Borjesson and Kim BoltonThe Journal of Physical Chemistry C2011 115 (50), 24454-24462Modeling of Ostwald Ripening of Metal Clusters Attached to Carbon Nanotubes
Anders Borjesson and Kim BoltonThe Journal of Physical Chemistry C2011 115 (50), 24454-24462We present a model of Ostwald ripening of nanosized clusters and apply it to study the time evolution of metal particles attached to carbon nanotubes. The Ostwald ripening of metal clusters attached to carbon nanotubes differs from that of free metal ...

Zeolite Surface As a Catalyst Support Material for Synthesis of Single-Walled Carbon Nanotubes
Takahiko Moteki, Yoichi Murakami, Suguru Noda, Shigeo Maruyama, and Tatsuya OkuboThe Journal of Physical Chemistry C2011 115 (49), 24231-24237Zeolite Surface As a Catalyst Support Material for Synthesis of Single-Walled Carbon Nanotubes
Takahiko Moteki, Yoichi Murakami, Suguru Noda, Shigeo Maruyama, and Tatsuya OkuboThe Journal of Physical Chemistry C2011 115 (49), 24231-24237Preparation of single-walled carbon nanotubes (SWNTs) has been advanced by controlling several parameters including the catalyst and the catalyst support material. Although zeolite has been frequently used as a catalyst support material for the synthesis ...

Coating Alumina on Catalytic Iron Oxide Nanoparticles for Synthesizing Vertically Aligned Carbon Nanotube Arrays
Xin Wang, Peter J. Krommenhoek, Philip D. Bradford, Bo Gong, Joseph B. Tracy, Gregory N. Parsons, Tzy-Jiun M. Luo, and Yuntian T. ZhuACS Applied Materials & Interfaces2011 3 (11), 4180-4184Coating Alumina on Catalytic Iron Oxide Nanoparticles for Synthesizing Vertically Aligned Carbon Nanotube Arrays
Xin Wang, Peter J. Krommenhoek, Philip D. Bradford, Bo Gong, Joseph B. Tracy, Gregory N. Parsons, Tzy-Jiun M. Luo, and Yuntian T. ZhuACS Applied Materials & Interfaces2011 3 (11), 4180-4184To synthesize long and uniform vertically aligned carbon nanotube (VACNT) arrays, it is essential to use catalytic nanoparticles (NPs) with monodisperse sizes and to avoid NP agglomeration at the growth temperature. In this work, VACNT arrays were grown ...
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History
- Published In Issue January 14, 2009
- Article ASAPDecember 01, 2008
- Received: June 28, 2008
Revised: October 27, 2008
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