国家/地区 中国（7） 世界知识产权组织（2）
IPC部 C（9）
IPC大类 C01（9）
IPC小类 C01B（9）
IPC C01B032/196（9）
发明人 LI Y（2） ZHANG J（2）
公开年 2023（9）
申请年 2022（4）  2021（3） 
专利权人

Energy-saving and recyclable graphene purification processing method involves mixing graphite material with strong acid and strong oxidant solution, and inserting oxygen-containing functional group between layers of graphite.

LIU S, ZHANG X, YUAN Q, WEN Z

Preparing and purifying nanoparticles of plasma ammoniated graphene-magnetic core structure, comprises placing nanoparticles of graphene-magnetic core structure in processing chamber, carrying out ammonia modification of nanoparticles, and removing non-magnetic free graphene.

LI Y, WANG M, MA Z, WANG Q

Graphene manufacturing apparatus comprises supply unit, moving unit, laser irradiation unit, and collecting unit connected to other side of moving unit to separate and collect graphene powder from graphite oxide powder or graphene oxide powder.

YANG W S, KIM S J, KIMSUNJOO, LEE J G, PARK H, PARK J, KIM B G

Device used for extracting graphene, consists of stirring tank connected with feed tank and water tank, circulation pump connected to side of stirring tank through pipeline, pneumatic diaphragm pump, pressure filter device, oxidation catalytic device and filter device.

ZHAN Z

Removing metal impurities in carbon material involves performing heat treatment, mixing carbon material and metal salt, and sequentially washing heat-treated mixture with acid and washing with water to obtain purified carbon material.

ZHU S, LI Y

Usage method of organic acid in preparation of graphene, involves soaking mixed product containing crude graphene in deionized water, adding organic acid to suspension, washing with deionized water and ethanol, centrifuging, placing precipitate in oven for drying to obtain graphene.

ZENG H, SHEN H, ZENG G

Forming activated graphene oxide sheets by heating first solution of etchant and graphene oxide to form activated graphene oxide sheets comprising in-plane defects, filtering first solution to purify sheets, and spray drying sheets.

ELKADY M F, PENG Z, FARAH R B, KANER R B

Direct manufacture of graphene from anthracite involves mixing pulverized coal sample of anthracite and copper chloride and drying to obtain mixed pulverized coal, grinding and irradiating to obtain coarse product of coal-based graphene, separating crude graphene product and purifying.

DONG W, LI J, ZHANG J, NIU H, KANG J, CHEN C, HUANG J, LI K

Removing impurities, used in hydrogen halide reduction-oxidation graphene film, involves using hot water to fumigate or multiple times to act on oxidized graphene film of hydrogen halide reduction, making water molecule enter into interlayer of graphene oxide, extruding halogen element to interlayer.

QU Y, GENG B, ZHANG J, GE M, TANG R, WU Y