Improved and Large Area Single-Walled Carbon Nanotube Forest Growth by Controlling the Gas Flow Direction

被引：118
作者：
Yasuda, Satoshi [1 ]
Futaba, Don N. [1 ]
Yamada, Takeo [1 ]
Satou, Junichi [1 ]
Shibuya, Akiyoshi [3 ]
Takai, Hirokazu [3 ]
Arakawa, Kouhei [3 ]
Yumura, Motoo [1 ]
Hata, Kenji [1 ,2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Nanotube Res Ctr, Tsukuba, Ibaraki 3058565, Japan
[2] Japan Sci & Technol Agcy JST, Kawaguchi, Saitama 3320012, Japan
[3] ZEON Corp, Chiyoda Ku, Tokyo 1008246, Japan
来源：
ACS NANO | 2009年 / 3卷 / 12期
关键词：
carbon nanotube; forest; water-assisted chemical vapor deposition; gas delivery; lifetime; CHEMICAL-VAPOR-DEPOSITION; ARRAYS; CATALYSTS; WATER; SHEETS;
D O I：
10.1021/nn9007302
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A gas shower system was introduced to improve the growth of single-walled carbon nanotube (SWNT) forests by controling the gas flow direction. Delivery of gases from the top of the forest enabled direct and precise supply of ethylene and water vapor to the Fe catalysts. As such, this approach solved one of the limiting factors of water-assisted chemical vapor deposition method (CVD), that is, delivery of the very small optimum water level to the catalysts, Consequently, this approach improved SWNT forests growth stability, uniformity, reproducibility, carbon efficiency (32%), and catalyst lifetime. With this improved growth, we could synthesize a 1 cm tall forest with 1 x 1 cm size. Also we employed this approach to grow an A4 size SWNT forest to highlight the scalability of water-assisted CVD.
引用
收藏
页码：4164 / 4170
页数：7
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