Growing Zigzag (16,0) Carbon Nanotubes with Structure-Defined Catalysts

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• 作者：Feng Yang ; Xiao Wang ; Daqi Zhang ; Kuo Qi ; Juan Yang ; Zhi Xu ; Meihui Li ; Xiulan Zhao ; Xuedong Bai ; Yan Li
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：137
• 期：27
• 页码：8688-8691
• 全文大小：386K
• ISSN：1520-5126

文摘

The growth of zigzag single-walled carbon nanotubes (SWNTs) is most challenging among all types of SWNTs, with the highest reported selectivity of 鈭?%. Here we realized the dominant growth of (16,0) tubes at the abundance near 鈭?0% by using intermetallic W₆Co₇ catalysts containing plenty of (1 1 6) planes together with optimizing the growth conditions. These (1 1 6) planes may act as the structure templates for (16,0) SWNTs due to the geometrical match between the open end of the (16,0) tube and the atomic arrangements of the (1 1 6) planes in W₆Co₇. Using catalysts with designed structure as solid state template at suitable kinetic conditions offers a strategy for selective growth of zigzag SWNTs.