国家/地区 中国（4）
IPC部 B（5）
IPC大类 C01（5）
IPC小类 C01B（5）
IPC C01B032/19（5）
发明人 CUI D（2） GE M（2） LU Y（2）
ZHANG F（2）
公开年 2022（3） 2023（2）
申请年 2022（5）
专利权人 SHANGHAI NAT.（2）

Preparing graphene quantum dot based on heterogeneous catalyst, comprises e.g. dispersing manganese dioxide particles in water, adding hydrogen peroxide and neutral graphene oxide solution into reaction solution, then adding hydrochloric acid and hydrogen peroxide, and post-processing.

WANG J, LU Y, GE M, ZHANG F, CUI D

Preparing graphene quantum dot involves modifying first graphene oxide, cutting into graphene quantum dot, dispersing graphene oxide into aqueous dispersion, adding ammonia water to dispersion to neutralize its acidity, and additionally adding ammonium chloride solution as an amine source.

GE M, LU Y, ZHANG F, CUI D

Graphene material used in substrate for sustained release of non-aqueous component, having specific total porosity and open porosity.

MURAMATSU K, TAKAHASHI K, IWATA H, SUTANI K, YABUMOTO H, IWATA E

Preparing nano-graphene used as plugging agent in oil-based drilling fluid, comprises reacting graphite, oxidant i.e. ammonium persulfate and intercalating agent i.e. concentrated sulfuric acid, reacting with concentrated sulfuric acid and oxidant i.e. potassium permanganate, and gas-stripping.

DAI F, LI W, HUANG D, XIE G, LUO P, LI D, BAI Y

Mixed solution of carboxyl graphene quantum dot includes preset amount of dispersant, adsorbent, carboxyl graphene quantum dot solution, and deionized water.

LEI B, TANG L, ZHAO P, PU X, WU M