Nano Archive

Water assisted synthesis of clean single-walled carbon nanotubes over a Fe2O3/Al2O3 binary aerogel catalyst

LI, Xuan-ke and Westwood, Aidan and Brown, Andy and Brydson, Rik and Rand, Brian (2008) Water assisted synthesis of clean single-walled carbon nanotubes over a Fe2O3/Al2O3 binary aerogel catalyst. New Carbon Materials, 23 (4). 351 - 355.

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Official URL: http://www.sciencedirect.com/science/article/B8H10...

Abstract

A Fe2O3/Al2O3 binary aerogel was used as a catalyst for the synthesis of single-walled carbon nanotubes (SWCNTs) by the catalytic decomposition of CH4-H2 and a CH4-H2-water mixture at 900 °C for 30 min. The influence of water vapor on the growth of SWCNTs was investigated by characterizing the morphology and structure of the carbon products using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and Raman spectroscopy. Results show that SWCNTs with a high purity were synthesized under the mixed atmosphere of CH4-H2-water when the amount of water vapor present was controlled by bubbling H2 through water. The yield and microstructure of the as-formed carbon products can be correlated with the composition of the reaction mixture.

Item Type:Article
Uncontrolled Keywords:Carbon nanotubes; Synthesis; Characterization
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:8649
Deposited By:SPI
Deposited On:25 Mar 2010 22:17
Last Modified:25 Mar 2010 22:17

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