Title:
METHOD FOR PREPARING GRAPHENE BY USING EUTECTIC GRAPHITE
Document Type and Number:
WIPO Patent Application WO/2017/048027
Kind Code:
A1
Abstract:
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 aqueous solution and carrying out electrolysis on the same into a mixture comprising diamond and graphite; a third step of injecting a potassium permanganate (KMnO4) aqueous solution into the mixture, and stirring the same; a fourth step of stripping graphite within the mixture; a fifth step of recovering stripped graphene oxide; and a sixth step of reducing the stripped graphene oxide. According to the present invention, since eutectic graphite, which is a by-product to be disposed of after the process for preparing diamond, is recycled so as to be used as a raw material for graphene, graphene preparation costs can be reduced, and there is also an effect of enabling additional costs for disposing eutectic graphite to be reduced.
Inventors:
OH CHUL (KR)
LEE HYOONG YOON (KR)
JANG KANG IL (KR)
LEE HYUN WOO (KR)
HAN DONG YUN (KR)
KIM MI SUN (KR)
LEE HYOONG YOON (KR)
JANG KANG IL (KR)
LEE HYUN WOO (KR)
HAN DONG YUN (KR)
KIM MI SUN (KR)
Application Number:
PCT/KR2016/010286
Publication Date:
March 23, 2017
Filing Date:
September 12, 2016
Export Citation:
Assignee:
ILJIN DIAMOND CO LTD (KR)
International Classes:
B01J3/06; B01J6/00; B01J19/10
Foreign References:
| KR20140109030A | 2014-09-15 | |||
| KR101109961B1 | 2012-02-15 | |||
| KR20130106463A | 2013-09-30 | |||
| KR101414539B1 | 2014-07-04 | |||
| US20150140438A1 | 2015-05-21 |
Attorney, Agent or Firm:
CHOI, Hoon Sik (KR)
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