国家/地区 中国（2）
IPC部 B（2）
IPC大类 B82（2）
IPC小类 B82Y（2） C01B（2） C09K（2）
IPC B82Y020/00（2）
发明人
公开年
申请年 2016（2）
专利权人

Preparation of graphene quantum dots of different oxygen content used in fluorescent material, involves dispersing graphene oxide in peroxide solution, mixing dispersion with lye, purifying to obtain powder, and performing gradient elution.

ZHANG L, ZHANG M

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