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Controlled Synthesis of Carbon Nanotubes by Arc in Water with Reduced PressureSynthesis of multi-walled carbon nanotubes (MWCNT) by an arc discharge between two graphite electrodes submerged in water under controlled pressure (from 400 760Torr) is reported. Transmission and scanning electron microscopy investigations of the arc discharge product collected from the bottom of the reactor revealed high concentrations of MWCNTs at all pressures. Dynamic light scattering (DLS) on suspensions containing MWCNTs showed that the mean diameter of the nanotubes increases with decreasing pressure. Raman Spectroscopy analysis reveals that the relative amount of disordered carbon is significantly less in the low pressure samples. Furthermore, the yield of the deposit was found to be independent of the pressure. These results suggest that the physical properties of MWCNTs formed by the submerged arc can be controlled by varying the pressure.
Document ID
20030068574
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Noriaki Sano (Himeji Institute of Technology Japan)
Masakazu Naito (Himeji Institute of Technology Japan)
Kenji Iimura (Himeji Institute of Technology Japan)
Satoshi Matsuda (Himeji Institute of Technology Japan)
Tatsuo Kanki (Himeji Institute of Technology Japan)
Takeyuki Kikuchi (Himeji Institute of Technology Japan)
Manish Chhowalla (Rutgers University–Newark Newark, United States)
Haolan Wang (University of Cambridge Cambridge, United Kingdom)
Gehan A J Amaratunga (University of Cambridge Cambridge, United Kingdom)
Date Acquired
August 21, 2013
Publication Date
August 1, 2003
Publication Information
Publication: Proceedings of the Seventh Applied Diamond Conference/Third Frontier Carbon Technology Joint Conference
Publisher: National Aeronautics and Space Administration
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA/CP-2003-212319
Meeting Information
Meeting: 3rd Frontier Carbon Technology (FCT) Joint Conference
Location: Tsukuba
Country: JP
Start Date: August 18, 2003
End Date: August 21, 2003
Sponsors: Nippon Institute of Technology, National Institute of Advanced Industrial Science and Technology, Glenn Research Center
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
pressure
water
arc discharge
carbon nanotube
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IDRelationTitle20030068525Collected WorksProceedings of the Seventh Applied Diamond Conference/Third Frontier Carbon Technology Joint Conference (ADC/FCT 2003)
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