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Novel pot-shaped carbon nanomaterial synthesized in a submarine-style substrate heating CVD method

Published online by Cambridge University Press:  13 January 2016

Hiroyuki Yokoi*
Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
Kazuto Hatakeyama
Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
Takaaki Taniguchi
Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
Michio Koinuma
Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
Masahiro Hara
Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
Yasumichi Matsumoto
Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
a) Address all correspondence to this author. e-mail:
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We have developed a new synthesis method that includes a chemical vapor deposition process in a chamber settled in organic liquid, and applied its nonequilibrium reaction field to the development of novel carbon nanomaterials. In the synthesis at 1110–1120 K, using graphene oxide as a catalyst support, iron acetate and cobalt acetate as catalyst precursors, and 2-propanol as a carbon source as well as the organic liquid, we succeeded to create carbon nanofiber composed of novel pot-shaped units, named carbon nanopot. A carbon nanopot has a complex and regular nanostructure consisting of several parts made of different layer numbers of graphene and a deep hollow space. Dense graphene edges, hydroxylated presumably, are localized around its closed end. The typical size of a carbon nanopot was 20–40 nm in outer diameter, 5–30 nm in inner diameter, and 100–200 nm in length. A growth model of carbon nanopot and its applications are proposed.

Invited Feature Paper
Copyright © Materials Research Society 2016 

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