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US 11,787,698 B2Granted
Purification and drying of graphene oxide
AssigneeThe Regents of the University of California
InventorsRichard B. Kaner, Matthew Kowal, Dukwoo Jun
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Abstract
Provided herein are graphene materials, fabrication processes, and devices with improved performance and a high throughput. In some embodiments, the present disclosure provides graphene oxide (GO) materials and methods for forming GO materials. Such methods for forming GO materials avoid the shortcomings of current forming methods, to facilitate facile, high-throughput production of GO materials.
Claims25
A method of forming a purified graphene oxide (GO) material comprising:
- forming a GO suspension comprising GO;
- dewatering the GO suspension with a first filter to form a dewatered GO suspension;
- forming a GO solution comprising the dewatered GO suspension and a solvent solution comprising a solvent;
- and
- filtering the GO solution through a second filter to form the purified GO material having a particle size of about 2 μm to about 50 μm,
- wherein filtering the GO solution comprises dead-end filtering and vacuum filtering, and
- wherein a hydraulic pressure exerted upon the GO suspension is about 1 pound per square inch (psi) to about 5 psi.
4 more elements
Dependencies are inferred from the claim text.