国家/地区 中国（12） 印度（3） 日本（2） 韩国（2） 美国（2） 世界知识产权组织（2）
IPC部 B（16） C（10）
IPC大类 B01（16） C02（7）
IPC小类 B01D（16）
IPC B01D071/56（16）
发明人 LI S（2） LIU G（2） LIU S（2）
公开年 2021（7） 2022（6） 2023（3）
申请年 2021（16）
专利权人

Preparing reverse osmosis membrane useful for desalination of boron sea water, comprises e.g. contacting base film with polyamine monomer solution, obtaining polyamide layer, heating, immersing in diethanolamine solution, immersing reverse in carboxy activator solution, coating and post-treating.

LIANG S, HU L, XIAO J, LIU G, YANG X

Adding graphene derivatives in active layer and substrate layer in filtration membrane, involves adding predetermined quantity of graphene derivatives to predetermined quantity of organic solvent, and mixing graphene derivatives with organic solvent in predetermined ratio to form graphene dispersion.

KAUSHIK A

Hollow fiber solvent-resistant nano-filtration membrane useful e.g. for separation and purification of organic solvent system, comprises base film and separation skin layer, where base film material is polyimide of generating crosslinking reaction with polyamine compound.

LIU S, LV X, JIANG Y, LI S, SU J, SU B

Membrane used in device for separating solute from solution and/or purifying water, comprises patterned binder and graphene oxide film, and filter paper supporting graphene oxide film.

YADAV V, SAKORIKAR T, GANAPATHI K L, RAMAPRABHU S, JAISWAL M

Preparing ultra-hydrophilic-underwater ultra-oleophobic graphene hydrogel/stainless steel mesh composite oil-water separation membrane, comprises immersing stainless steel mesh in detergent water, absolute ethanol and deionized water, placing in oven for in-situ polymerization and freeze-drying.

DAI Z, NI H, LI R, TIAN N

Ceramic nanofiltration membrane comprises graphene oxide and polyethyleneimine are alternately coated on surface of ceramic nanofiltration membrane, where graphene oxide and polyethyleneimine allow carboxyl group and amine group to form covalent bond.

KOOK H, CHA M, KIM S, LEE M, PARK C, PARK C H, LEEMINJOO, KIM S Y

Preparing efficient seawater desalination membrane involves taking microporous membrane as surface membrane and polyamide-based membrane as intermediate layer.

LIU G, LI S, WANG L

Preparation of graphene oxide modified composite nano-filtration membrane used for treating heavy metal waste water, involves mixing graphene oxide dispersion liquid and nano-particle dispersion liquid, ultrasonically reacting, immersing membrane in dopamine solution, cleaning and drying.

WANG S, GUO X, LIU J, WANG J, ZHAO Y, JI Z, YUAN J, FEI L, ZHOU J, LI F

Preparing multilayer polyamide film composite reverse osmosis membrane, comprises e.g. preparing polysulfone-based membrane, preparing chitosan complexed silver antibacterial agent, and immersing film containing top polyamide layer in protective layer modification solution.

ZHONG C, SUN F, ZHU Y

Preparing composite forward osmosis membrane for e.g. seawater desalination, by soaking electrospun nanofiber supporting layer with intermediate layer in calcium chloride solution, washing, soaking in sodium carbonate solution, washing and preparing polyamide selective separation layer.

LIU H, YU L, CHEN D, YU Y