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Efficient Growth of Horizontally Aligned Single-Walled Carbon Nanotubes by Chemical Vapor Deposition Over MgO-Supported Bimetallic Co-Based Catalysts

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A series of supported cobalt-based catalysts (Co-X, where X = Mn, V, W, Gd, Mo) has been investigated for the growth of single-walled carbon nanotubes via catalytic decomposition of CH4. At 850 °C, Mn, W and Gd promoted Co-catalysts produce SWNTs while Mo and V do not yield any SWNTs. Furthermore, Co–Gd catalysts produce high quality SWNTs with very few defects, and also narrow diameter and chirality distributions (∼1 nm). The growth of horizontally aligned SWNTs (∼1 mm long) using the Co–Gd catalyst is also demonstrated.
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Document Type: Research Article

Publication date: January 1, 2011

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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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