METHOD FOR PREPARING GRAPHENE BY USING EUTECTIC GRAPHITE

WIPO Patent Application WO/2017/048026

A1

The present invention relates to a method for preparing graphene by using eutectic graphite. According to the present invention, the method for preparing graphene by using eutectic graphite comprises: a first step of preparing a sintered body, comprising diamond and unreacted graphite, by sintering a mixture powder comprising a metal and graphite; a second step of converting, by dipping the sintered body in a strong acid containing potassium permanganate (KMnO4) and carrying out electrolysis on the same into a mixture comprising diamond and graphite; a third step of stripping graphite within the mixture; a fourth step of recovering stripped graphene oxide; and a fifth step of reducing the recovered graphene oxide. According to the present invention, a process can be reduced by simultaneously carrying out a graphite pre-treatment step of in a process for preparing graphene and a process for preparing diamond, and thus there are effects of reducing reagents costs, which are required for pre-treatment, and processing costs.

OH CHUL (KR)
LEE HYOONG YOON (KR)
JANG KANG IL (KR)
LEE HYUN WOO (KR)
HAN DONG YUN (KR)
KIM MI SUN (KR)

PCT/KR2016/010285

March 23, 2017

September 12, 2016

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ILJIN DIAMOND CO LTD (KR)

B01J3/06; B01J6/00; B01J19/10

KR20140109030A	2014-09-15
KR20150079533A	2015-07-08
KR20140118119A	2014-10-08
KR20130131767A	2013-12-04
KR100733214B1	2007-06-27

PETROV, I. ET AL.: "Detonation Nanodiamonds Simultaneously Purified and Modified by Gas Treatment", DIAMOND & RELATED MATERIALS, vol. 16, no. 12, 2007, pages 2098 - 2103, XP022354283

CHOI, Hoon Sik (KR)

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