Title:
METHOD FOR STRIPPING GRAPHENE OXIDE NANO MEMBRANE FROM SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2022/141180
Kind Code:
A1
Abstract:
Provided is a method for stripping a graphene oxide nano membrane from a substrate. The method comprises: placing in a reduction chamber having HI steam for chemical reduction, reducing for 10 min or more in an environment that the concentration of HI is 0.3 g/L or more and the concentration of water steam is 0.07 g/L or less, and automatically stripping graphene oxide from the substrate. The beneficial effects are that: steps for preparing an independent film are reduced; the operation is simpler, cheaper, and faster; the problems that an AAO membrane cannot bear the weight of a transfer agent since the strength of the membrane is not enough after the size of the nano membrane is increased, and a transfer operation is difficult in a solid-phase transfer process are avoided; and the integrity and uniformity of a large-size film are ensured.
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Inventors:
PENG LI (CN)
FANG WENZHANG (CN)
SHEN YING (CN)
LIU YINGJUN (CN)
YU DANPING (CN)
GAO CHAO (CN)
FANG WENZHANG (CN)
SHEN YING (CN)
LIU YINGJUN (CN)
YU DANPING (CN)
GAO CHAO (CN)
Application Number:
PCT/CN2020/141340
Publication Date:
July 07, 2022
Filing Date:
December 30, 2020
Export Citation:
Assignee:
HANGZHOU GAOXI TECH CO LTD (CN)
International Classes:
C01B32/184; C01B32/194; C01B32/198; B82Y30/00; B82Y40/00
Foreign References:
| CN105732038A | 2016-07-06 | |||
| CN103265012A | 2013-08-28 | |||
| CN103265013A | 2013-08-28 | |||
| CN109911890A | 2019-06-21 | |||
| CN105860939A | 2016-08-17 | |||
| CN105575679A | 2016-05-11 | |||
| US20130001089A1 | 2013-01-03 |
Other References:
HUIYUAN LIU, HUANTING WANG, XIWANG ZHANG: "Facile Fabrication of Freestanding Ultrathin Reduced Graphene Oxide Membranes for Water Purification", ADVANCED MATERIALS, VCH PUBLISHERS, DE, vol. 27, no. 2, 1 January 2015 (2015-01-01), DE , pages 249 - 254, XP055480842, ISSN: 0935-9648, DOI: 10.1002/adma.201404054
Attorney, Agent or Firm:
HANGZHOU HUACHEN JOINT INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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