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US 8,012,447 B2Granted
Methods for controlling the quality of metal nanocatalyst for growing high yield carbon nanotubes
AssigneeHonda Motor Co., Ltd.
InventorsAvetik Harutyunyan, Toshio Tokune, Elena Mora Fernandez
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Abstract
Methods are provided for the preparation of single-walled carbon nanotubes using chemical vapor deposition processes. In some aspects, single-walled carbon nanotubes having narrow distribution of diameters are formed by contacting a carbon precursor gas with a catalyst on a support, wherein the catalyst has an average diameter of less than about 2 nm.
Claims15
A chemical vapor deposition method for the preparation of single-wall carbon nanotubes (SWNTs), the method comprising:
- contacting a carbon precursor gas with a catalyst on a support, wherein the carbon precursor gas comprises methane, an inert gas, and hydrogen;
- and wherein the catalyst has an average diameter of less than 10 nm;
- and wherein SWNTs are formed;
- and wherein 90% of the SWNTs have a diameter within 25% of the mean SWNT diameter.
1 more element
Dependencies are inferred from the claim text.