Efficient Growth of Horizontally Aligned Single-Walled Carbon Nanotubes by Chemical Vapor Deposition Over MgO-Supported Bimetallic Co-Based Catalysts
Abstract: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.
Document Type: Research Article
Publication date: 2011-01-01
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