Patent ID: 11873444
Assignee: SOUTHWEST PETROLEUM UNIVERSITY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method of preparing a nanographene comprising the following steps:
(1) carrying out a first reaction by contacting a raw material graphite and a first oxidizing agent with an intercalating agent to obtain a modified graphite;
(2) performing a second reaction by contacting the modified graphite and an acid with a second oxidizing agent to obtain a graphene pre-product;
(3) subjecting the graphene pre-product to an air-flow exfoliation to prepare the nanographene;
wherein a weight ratio of the raw material graphite: the first oxidizing agent: the intercalating agent in step (1) is 1: 110-150:20-60;
wherein a weight ratio of the modified graphite: the acid: the second oxidizing agent in step (2) is 1: 20-40:3-8;
wherein a condition of the first reaction in step (1) comprises a temperature of 10-25° C.;
wherein a condition of the second reaction in step (2) comprises a temperature of 1-10° C. and a time of 2-4 hours; and
wherein a condition of the air-flow exfoliation in step (3) comprises a temperature of 30-90° C.