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Title
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Mass production of high-quality multi-walled carbon nanotube bundles on a Ni/Mo/MgO catalyst
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Author
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Abstract
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| A new catalyst (Ni/Mo/MgO) is reported, with which one can synthesize multi-walled carbon nanotube (MWNT) bundles with a yield of more than 45 times the amount of the pristine catalyst, using a methane-hydrogen mixture as precursor. Powder X-ray diffraction, Raman spectroscopy and thermal gravimetric analysis show that the purity of the as-prepared MWNTs is over 97%. The diameter of the carbon nanotubes is 920 nm, measured by high-resolution electron microscopy on 421 individual MWNTs. The high purity of the as-prepared MWNTs allows us to omit the usual complex purification process required for carbon nanotubes synthesized by chemical vapor deposition. Because of its durable high activity, the Ni/Mo/MgO catalyst in its pristine state is ideal for mass production of high-quality MWNTs. The synergism of nickel and molybdenum is considered the main reason for the high yield of carbon nanotubes. |
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Language
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English
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Source (journal)
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Carbon. - Oxford
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Publication
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Oxford
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2005
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ISSN
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0008-6223
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DOI
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10.1016/J.CARBON.2004.09.014
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Volume/pages
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43
:2
(2005)
, p. 295-301
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ISI
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000225856400009
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Full text (Publisher's DOI)
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