Preparation method of edge-carboxylated graphene

A technology of carboxylated graphene and edge, which is applied in the field of preparation of carboxylated graphene, can solve the problems of difficult preparation and achieve the effects of good stability, improved efficiency, and long-term stable preparation
CN110817853AActive Publication Date: 2020-02-21CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2020-02-21

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Abstract

The invention discloses a preparation method of carboxylated graphene. The method comprises the following steps of grinding graphite powder in the presence of supercritical carbon dioxide in a high-pressure millstone kettle. Through the preparation method, carboxyl-modified, especially edge-carboxyl-modified graphene can be directly obtained, the introduced carboxyl content can be controlled in arelatively wide range, and large-area edge-modified graphene can also be prepared.
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Description

technical field

[0001] The invention relates to a method for preparing carboxylated graphene, in particular to a method for preparing edge carboxylated graphene. Background technique

[0002] Functionalized graphene refers to the introduction of functional groups, such as carboxyl, amine, and epoxy groups, on the surface or edge of graphene through chemical reactions. The main purpose of introducing functional groups is to increase the polarity of graphene or provide chemical reaction sites to enhance the interaction between graphene and other materials. However, the introduction of active groups destroys the conjugated system on the surface of graphene, which definitely weakens the excellent performance of graphene. The more modification groups are introduced, the greater the performance of graphene will be reduced. If the functional groups are only introduced at the edge of graphene, the conjugated system on the surface of graphene will not be destroyed, thereby preservin...

Claims

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