Millimeter-Thick Single-Walled Carbon Nanotube Forests: Hidden Role of Catalyst Support

By Suguru Noda, K. Hasegawa, Hisashi Sugime, Kazunori Kakehi, Zheng Zhang, S. Maruyama, Yukio Yamaguchi. 2007

191 citations recorded by the source corpus.

A parametric study of so-called “super growth” of single-walled carbon nanotubes (SWNTs) was done by using combinatorial libraries of iron/aluminum oxide catalysts. Millimeter-thick forests of nanotubes grew within 10 min, and those grown by using catalysts with a thin Fe layer (about 0.5 nm) were SWNTs. Although nanotube forests grew under a wide range of reaction conditions such as gas composition and temperature, the window for SWNT was narrow. Fe catalysts rapidly grew nanotubes only when supported on aluminum oxide. Aluminum oxide, which is a well-known catalyst in hydrocarbon reforming, plays an essential role in enhancing the nanotube growth rates.

Subfields: Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/f94b8ea74d731f1a921de2484b26846d0ba28c21

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In Materials Chemistry

1. V. Jourdain
2. C. Bichara

Citations in the corpus

• Current understanding of the growth of carbon nanotubes in catalytic chemical vapour deposition (2013, methodology): “[321] reported that replacing Al2O3 support beneath the Fe catalyst by SiO2 decreases the nanotube yield by nearly two orders of magnitude under the same growth conditions.”