Short Isolated Single-Walled Carbon Nanotubes Synthesized by Arc Discharge Process

Feng LI1, Zhigang Chen1, Chang Liu1, Gao-Qing Lu2, Hui-Ming Cheng1

1 Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
2 Australian Research Council Centre for Functional Nanomaterials, School of Engineering The University of Queensland, Brisbane, QLD 4072, Australia

Contact e-mail: fli@imr.ac.cn

Short and isolated single-walled carbon nanotubes (SWNTs) were synthesized by arc discharge method under 150 Torr H2 and 50 Torr Ar using carbon back as carbon source, nano Fe particles as catalyst, and FeS powder as growth promoter. The products are web-like, which contain SWNTs with well-crystalline structure. Instead of forming into bundles, most of the as prepared SWNTs are isolated with averaged diameter of 2 nm and lengths ranging from 10 to 30 nm. These isolated SWNTs provide convenience for structural characterization and property measurement of SWNTs, and may also be useful for nano device fabrications.

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