High-Yield Synthesis of Helical Carbon Nanofibers Using Iron Oxide Fine Powder as a Catalyst

Carbon nanocoil (CNC), which is synthesized by a catalytic chemical vapor deposition (CCVD) method, has a coil diameter of 300-900 nm and a length of several tens of μm. Although it is very small, CNC is predicted to have a high mechanical strength and hence is expected to have a use in nanodevices...

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Published in:Crystals (Basel) 2015-03, Vol.5 (1), p.47-60
Main Authors: Suda, Yoshiyuki, Maruyama, Koji, Iida, Tetsuo, Takikawa, Hirofumi, Ue, Hitoshi, Shimizu, Kazuki, Umeda, Yoshito
Format: Article
Language:English
Subjects:
carbon nanocoil
carbon nanomaterials
Catalysis
catalyst metals
Catalysts
Chemical vapor deposition
Computer numerical control
nanodevices
Nanotechnology devices
Purity
Tin dioxide
Tin oxides
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cited_by cdi_FETCH-LOGICAL-c466t-a006400dda815698e64db8af5b885819e53c32ef0ff70aa4a0ebb20d7e699f343
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container_start_page 47
container_title Crystals (Basel)
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creator Suda, Yoshiyuki
Maruyama, Koji
Iida, Tetsuo
Takikawa, Hirofumi
Ue, Hitoshi
Shimizu, Kazuki
Umeda, Yoshito
description Carbon nanocoil (CNC), which is synthesized by a catalytic chemical vapor deposition (CCVD) method, has a coil diameter of 300-900 nm and a length of several tens of μm. Although it is very small, CNC is predicted to have a high mechanical strength and hence is expected to have a use in nanodevices such as electromagnetic wave absorbers and field emitters. For nanodevice applications, it is necessary to synthesize CNC in high yield and purity. In this study, we improved the conditions of catalytic layer formation and CCVD. Using optimized CVD conditions, a CNC layer with a thickness of >40 μm was grown from a SnO2/Fe2O3/SnO2 catalyst on a substrate, and its purity increased to 81% ± 2%.
doi_str_mv 10.3390/cryst5010047
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subjects carbon nanocoil
carbon nanomaterials
Catalysis
catalyst metals
Catalysts
Chemical vapor deposition
Computer numerical control
nanodevices
Nanotechnology devices
Purity
Tin dioxide
Tin oxides
title High-Yield Synthesis of Helical Carbon Nanofibers Using Iron Oxide Fine Powder as a Catalyst
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