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1. (WO2013111947) METHOD FOR ISOLATING GRAPHENE OXIDE

Pub. No.:    WO/2013/111947    International Application No.:    PCT/KR2012/010970
Publication Date: Fri Aug 02 01:59:59 CEST 2013 International Filing Date: Sun Dec 16 00:59:59 CET 2012
IPC: C01B 31/02
B01D 1/00
B01D 11/02
B01J 2/00
Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
한국과학기술원
Inventors: LEE, Hae-shin
이해신
HONG, Soon-hyung
홍순형
RYU, Seong-woo
류성우
LEE, Bin
이빈
Title: METHOD FOR ISOLATING GRAPHENE OXIDE
Abstract:
The present invention provides a method for isolating graphene oxide comprising the steps of: (a) forming a graphene oxide dispersed liquid by dispersing graphene oxides in water; (b) depositing the dispersed graphene oxides in the graphene oxide dispersed liquid through coagulation with each other by adding salts in the graphene oxide dispersed liquid; (C) isolating the graphene oxides, which are deposited according to the concentration of the salt solution, from the graphene oxide dispersed liquid, wherein, the salt solution is formed by dissolving the salts in the graphene oxide dispersed liquid; and (d)removing residual salts by purifying the isolated graphene oxides.