GRAPHENE OXIDE-MODIFIED POLYDOPAMINE COMPOSITE NANOFILTRATION MEMBRANE AND PREPARATION METHOD THEREFOR

Title:

GRAPHENE OXIDE-MODIFIED POLYDOPAMINE COMPOSITE NANOFILTRATION MEMBRANE AND PREPARATION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2021/248899

Kind Code:

A1

Abstract:

A graphene oxide-modified polydopamine composite nanofiltration membrane and a preparation method therefor are disclosed. The invention comprises a polyethersulfone support and an organic functional layer disposed thereon. The organic functional layer is formed on the polyethersulfone support by means of an interfacial polymerization reaction and by using an aqueous phase monomer, an organic phase monomer, and an acid acceptor as raw materials. In the invention, graphene oxide is added to a polydopamine composite nanofiltration membrane, improving the hydrophilicity and the coarseness of the surface of the membrane, and thereby improving the water flux thereof.

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Inventors:

CHEN YUNQIANG (CN)
HONG YUBIN (CN)
FANG FULIN (CN)
LAN WEIGUANG (CN)

Application Number:

PCT/CN2020/142057

Publication Date:

December 16, 2021

Filing Date:

December 31, 2020

Export Citation:

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Assignee:

SUNTAR MEMBRANE TECHNOLOGY XIAMEN CO LTD (CN)

International Classes:

B01D71/60; B01D61/00; B01D67/00; B01D69/02; B01D69/10; B01D69/12

Foreign References:

CN110496533A	2019-11-26
CN107106986A	2017-08-29
CN110124527A	2019-08-16
CN105879701A	2016-08-24

Other References:

CHOI HYEON-GYU, SHAH AATIF ALI, NAM SEUNG-EUN, PARK YOU-IN, PARK HOSIK: "Thin-film composite membranes comprising ultrathin hydrophilic polydopamine interlayer with graphene oxide for forward osmosis", DESALINATION, vol. 449, no. 1, 1 January 2019 (2019-01-01), pages 41 - 49, XP055879279, ISSN: 0011-9164, DOI: 10.1016/j.desal.2018.10.012

Attorney, Agent or Firm:

SHOUCHUANG JUNHE PATENT AGENT CO., LTD. XIAMEN (CN)

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