Aqueous and organic suspensions of exfoliated nanocarbon materials, method for making same and uses thereof
US10414935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jul 4, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/194
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for preparing aqueous or organic suspensions of fully exfoliated nanocarbon materials includes a) dissolving a nanocarbon intercalation compound in an aprotic organic solvent (A) or a mixture (A′) of aprotic organic solvents under inert atmosphere; b) re-oxidation to revert the reduced nanocarbon material to its neutral state; and c) mixing the organic suspension of neutral nanocarbon obtained in step b) with a suitable amount of degassed water, degassed ionic aqueous solution, degassed organic solvent (B), degassed mixture (B′) of organic solvents, or degassed mixture of (B) or (B′) with water or an aqueous ionic solution; wherein solvent (A) or solvent mixture (A′) is fully or partially water-miscible or fully or partially miscible with solvent (B) or solvent mixture (B′); thereby leading to an air-metastable aqueous or organic suspension of nanocarbon material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.