Controlled Evolution of Carbon Nanotubes Coated by Nanodiamond: the Realization of a New Class of Hybrid Nanomaterials
- 5 May 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Chemistry of Materials
- Vol. 17 (12), 3214-3220
- https://doi.org/10.1021/cm0502018
Abstract
We report a new class of nanostructured carbon materials, which couple nanosized diamond with single-walled carbon nanotubes. This exciting material is being produced in our laboratories in a modified CVD reactor by means of reactions between carbon nanopowders and atomic H. Field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Raman spectroscopy, and reflection high-energy electron diffraction (RHEED) have been used to study samples grown for various deposition times. The information achieved by combined use of these characterization techniques has enabled the construction of a time-growth sequence for the two carbon nanophases and has enlightened the peculiar growth of such hybrid carbon systems. The tubular inner structures are found to be bundles of single-walled carbon nanotubes (SWNT) up to 15 μm long, and the outer deposits consist of well-shaped diamond crystallites with diameters in the 20−100 nm range. The one-step synthesis approach described here provides an experimental route to the production of ordered arrays of rigid nanotubes coated by diamond nanocrystallites.This publication has 36 references indexed in Scilit:
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