Fractionation of graphene oxide through emulsion stabilization and graphene oxide produced thereby
US10266413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2017 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Nov 3, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2204/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method to fractionate and isolate components of oxidized graphene material is provided that includes fractionating a system that includes graphene oxide, a solvent and water, wherein the fractionation creates two phases or fractions: (i) a water phase or fraction that contains highly oxidized graphene oxide, and (ii) a solvent-in-water emulsion phase or fraction that contains a graphene-based material. The graphene-based material is recovered from the solvent-in-water phase or fraction. Fractionation of the solvent-in-water emulsion phase or fraction may be repeated. The graphene-based material (uGO) may be used in a range of applications, e.g., a medical device, a nanoelectronic, an electromechanical system, a sensor, a composite, a catalysis, and energy storage device, and an optics application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.