title: 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 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.
authors: Institute of Chemical and Engineering Science, A*Star 1 Pesek Roads, Jurong Island 627833, Singapore.
authors: San Hua
authors: SH
authors: Lim
authors: Jianyi
authors: J
authors: Lin
authors: Zhiqiang
authors: Z
authors: Luo
authors: Zexiang
authors: Z
authors: Shen