Sakurai Shunsuke, Inaguma Masayasu, Futaba Don N, Yumura Motoo, Hata Kenji
Technology Research Association for Single Wall Carbon Nanotubes (TASC), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
Materials (Basel). 2013 Jul 2;6(7):2633-2641. doi: 10.3390/ma6072633.
Understanding the fundamental mechanisms and limiting processes of the growth of single-walled carbon nanotube (SWCNT) would serve as a guide to achieve further control on structural parameters of SWCNT. In this paper, we have studied the growth kinetics of a series of SWCNT forests continuously spanning a wide range of diameters (1.9-3.2 nm), and have revealed an additional fundamental growth limiting process where the mass of the individual SWCNT is determined by the individual catalyst volume. Calculation of the conversion rate of carbon atoms into CNTs per Fe atom is 2 × 10² atoms per second. This rate limiting process provides an important understanding where the larger diameter SWCNT would grow faster, and thus be more suited for mass production.
了解单壁碳纳米管（SWCNT）生长的基本机制和限制过程，将为进一步控制SWCNT的结构参数提供指导。在本文中，我们研究了一系列直径范围广泛（1.9 - 3.2纳米）的SWCNT森林的生长动力学，并揭示了另一个基本的生长限制过程，即单个SWCNT的质量由单个催化剂体积决定。每个铁原子将碳原子转化为碳纳米管的转化率计算为每秒2×10²个原子。这个速率限制过程提供了一个重要的认识，即较大直径的SWCNT生长得更快，因此更适合大规模生产。
