Title:
COMPOSITE MEMBRANE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/177274
Kind Code:
A1
Abstract:
A composite membrane, a preparation method therefor and use thereof. Specifically, the composite membrane is a composite membrane using graphene oxide as an intermediate layer or using graphene quantum dots as the intermediate layer. A preparation method for a hybrid composite membrane using graphene oxide as an intermediate layer comprises an interface polymerization step, a polyamine modification step, a chemical crosslinking step, and a solvent activation step. A preparation method for an ultra-thin composite membrane using graphene quantum dots as an intermediate layer comprises a graphene quantum dot intermediate layer addition step, an interface polymerization reaction step, a chemical crosslinking step, and a solvent activation step. Because the graphene oxide intermediate layer has a large number of oxygen-containing functional groups, and the graphene quantum dots have a large number of hydroxyl and carboxyl groups, the hydrophilicity of a basement membrane is greatly enhanced, and thus the separation performance and/or solvent resistance of the membrane are effectively improved.
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Inventors:
SU BAOWEI (CN)
LI YANYANG (CN)
LIANG YIZHI (CN)
LI SHUXUAN (CN)
HAN LIHUI (CN)
LI CAN (CN)
ZHANG JINMIAO (CN)
LI YANYANG (CN)
LIANG YIZHI (CN)
LI SHUXUAN (CN)
HAN LIHUI (CN)
LI CAN (CN)
ZHANG JINMIAO (CN)
Application Number:
PCT/CN2019/099978
Publication Date:
September 10, 2020
Filing Date:
August 09, 2019
Export Citation:
Assignee:
OCEAN UNIV CHINA (CN)
International Classes:
B01D71/64; B01D71/68
Foreign References:
| CN106964262A | 2017-07-21 | |||
| CN107469637A | 2017-12-15 | |||
| CN102989330A | 2013-03-27 | |||
| CN108421422A | 2018-08-21 | |||
| CN105413464A | 2016-03-23 | |||
| US9527043B2 | 2016-12-27 | |||
| US20150258506A1 | 2015-09-17 | |||
| CN109925896A | 2019-06-25 |
Attorney, Agent or Firm:
NTD UNIVATION INTELLECTUAL PROPERTY AGENCY LTD (CN)
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