国家/地区 加拿大（2） 中国（2） 美国（2） 世界知识产权组织（2）
IPC部 B（3）
IPC大类 C01（3）
IPC小类 C01B（3）
IPC C01B031/04（3）
发明人
公开年 2016（3）
申请年 2015（2） 
专利权人

Manufacture of graphene quantum dots from carbon source, involves exposing carbon source chosen from coal, coke, biochar, and/or asphalt to solution containing oxidant, and forming graphene quantum dots.

TOUR J M, METZGER A, YE R, MANN J, TOUR J

Extraction of graphene quantum dots from coffee grounds solid waste, involves adding recovered coffee residue to dilute hydrochloric acid, stirring, carrying out ultrasonic surface activation, filtering and washing with deionized water.

LI W, PAN D, WANG L, GENG B, GUO Y

Method for enrichment of mixture of graphene nanoplatelet (GNP), involves introducing GNP into separation column, and increasing content of GNP with lower thickness by flow of medium through column.

POLYAKOVA E, SAVSUNENKO O, STOLYAROV D