US 12,234,151 B2
Method for producing graphene and new form of graphene
Marina Starkova, Twickenham (GB); and Sergey Alekseev, London (GB)
Assigned to Graphene Star Ltd, Twickenham (GB)
Appl. No. 17/608,415
Filed by Graphene Star Ltd, Twickenham (GB)
PCT Filed May 10, 2019, PCT No. PCT/EP2019/062101
§ 371(c)(1), (2) Date Nov. 2, 2021,
PCT Pub. No. WO2020/228931, PCT Pub. Date Nov. 19, 2020.
Prior Publication US 2022/0227632 A1, Jul. 21, 2022
Int. Cl. C01B 32/19 (2017.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); B01J 19/26 (2006.01)
CPC C01B 32/19 (2017.08) [B01J 19/008 (2013.01); B01J 19/241 (2013.01); B01J 19/26 (2013.01); C01B 2204/04 (2013.01); C01B 2204/22 (2013.01); C01B 2204/30 (2013.01); C01B 2204/32 (2013.01); C01P 2002/82 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for preparing graphene which method comprises the steps of:
(a) forming a graphite/water mixture; and
(b) introducing the graphite/water mixture into a cavitation reactor using at least two offset nozzles, wherein step (b) comprises pulsing the graphite/water mixture at a frequency of from 10-200 Hertz, wherein the offset nozzles are parallel but not coaxial.