Lim San Hua, Lin Jianyi, Luo Zhiqiang, Shen Zexiang
Institute of Chemical and Engineering Science, A*Star 1 Pesek Roads, Jurong Island 627833, Singapore.
J Nanosci Nanotechnol. 2011 Jan;11(1):143-7. doi: 10.1166/jnn.2011.3022.
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 degrees 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 (approximately 1 nm). The growth of horizontally aligned SWNTs (approximately 1 mm long) using the Co-Gd catalyst is also demonstrated.
