国家/地区 中国（14） 美国（5） 世界知识产权组织（3）
IPC部 B（21）
IPC大类 B01（21） C02（11） C01（3）
C08（2）
IPC小类 B01D（21）
IPC B01D061/02（21）
发明人 GAO T（2）
公开年 2021（12） 2020（8）
申请年 2020（21）
专利权人 PALL HEBEI E.（2）

Graphene oxide titanium dioxide-dopamine polyetherimide nanofiltration membrane comprises organic ultrafiltration membrane support and functional layer prepared by ultrasonically mixing graphene oxide solution and titanium dioxide-dopamine aqueous solution, filtering to form membrane, and filtering.

LAN W, FANG F, HONG Y, CHEN Y

Preparing layer-by-layer covalent cross-linked graphene oxide film useful in treating water, comprises e.g. assembling polyacrylonitrile film and graphene oxide layer-by-layer using symmetrical diamine substance as cross-linking agent.

ZHAO X, LI H, QI H, TIAN Y

Extracting lithium from aqueous lithium source, comprises removing dissolved calcium ions and/or dissolved magnesium ions by nanofiltration, removing water by reverse osmosis, and electrochemically extracting dissolved lithium ions.

ALYOUSEF Y M, ALRASHEED R, AL JILIL S, HIPPAUF F, ABENDROTH T, ALTHUES H, KASKEL S

Nanoporous membrane used in filter, comprises two-dimensional material permeated by pores which are blocked by polymer derived from monomer and comprising population of pores having average pore diameter.

KIDAMBI P R, CHENG P

Reverse osmosis membrane comprises polyethylene microporous membrane, polysulfone layer coated on polyethylene microporous membrane and polyamide layer coated on polysulfone layer.

UNANNOUNCED I

Preparing graphene oxide composite nanofiltration membrane by spraying method involves preparing oxidized graphene by using nano-graphite as raw material, using modified Hummers method to prepare graphene oxide.

WEI Y, WANG J, CHEN J, FENG H

Dialysate-free continuous renal replacement system comprises blood filtration membrane configured to provide filtered fluid by renal filtration of blood passing through blood filtration stage at arterial pressure.

MOGHADDAM S

New zwitterionic functionalized graphene used for preparing nanofiltration membrane used in chemical industry and domestic sewage desalination.

CUI S, ZHANG X, BU J

Flexible anti-fouling composite filter membrane comprises mixture of graphene oxide modified basalt fiber, plant nano cellulose, lignin adhesive and polyaspartic acid, which forms a layer of flexible anti-fouling composite fiber film.

LI S, LI L, GAO F

Multi-layered membrane useful for separating many ions or molecules in a fluid stream and in device for osmotic power generation, comprises a top layer, a bottom layer, and a spacer layer.

GARAJ S, SPINA M