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Synthesis of Beaded and Entwined Carbon Nanofibers in Ni : Al Alloy Catalyst

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Abstract:

This paper reports two new types of carbon nanofibers synthesis by thermal decomposition of n-hexane in presence of Ni–Al alloy in hydrogen atmosphere at 1100 °C. One type is "beaded fibers" in which spherical carbon beads (∼1 m) are regularly grown from outer surface of fibers (∼0.3 m). The other new microstructure is "entwined fibers" in which multiple nanofibers of diameter ∼100 nm grow self-entwined like a braid of hair. Both bead-fiber bonding (in beaded fibers) and fiber–fiber interaction (in entwined fibers) are strong to be detached/unfolded by 30-min ultrasonication.

Keywords: CARBON FIBERS; CHEMICAL VAPOR DEPOSITION; ELECTRON MICROSCOPY

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.221

Publication date: March 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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