Method for preparing uniform single walled carbon nanotubes
US7951351B2 · kind B2 · utility
31Cited by
9References
15Claims
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Key dates
| Filing date | Mar 29, 2007 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Sep 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods of preparing single walled carbon nanotubes from a metal catalyst having deposited thereon fullerenes are provided. Fullerenes are deposited onto a metal catalyst precursor or metal catalyst. In the presence of a carbon containing gas, the metal catalyst precursor/fullerene composition is then exposed to conditions suitable for reducing the metal catalyst precursor, for subliming the fullerene and for growing single walled carbon nanotubes. The fullerenes form the end caps for the resulting single walled carbon nanotubes, which are uniform in diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.