Preparation method of organic single-layer graphene solution

Abstract

The invention relates to a preparation method of an organic single-layer graphene solution. According to the method, graphite is soaked in an intercalator, so that solvent molecules are intercalated into interlayers of the graphite to obtain a graphite intercalation compound, namely, expandable graphite; the expandable graphite is heated quickly under protection of argon, volumes of the solvent molecules on the interlayers of the graphite expand rapidly, and expanded graphite is obtained; after the expanded graphite is obtained, an ultrasonic dispersion liquid-phase stripping method is adopted for stripping screening so as to obtain a graphene solution, and solid graphene powder is obtained after suction filtration, washing and drying; and the solid graphene is ultrasonically dispersed in an organic solution, and the organic graphene solution which is high in single layer rate and uniform in dispersion and has corrosion inhibition on a metal composite is obtained finally.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a method for preparing a single-layer graphene organic solution. [0002] Background technique [0003] Graphene, carbon atoms via sp 2 A single-layer two-dimensional crystal formed by hybridization and mutual bonding is the basic structural unit for constructing other dimensional carbon materials (zero-dimensional fullerenes, one-dimensional carbon nanotubes, and three-dimensional graphite). Due to its excellent electrical, thermal and mechanical properties, it is expected to be widely used in high-function nanoelectronic devices, transparent conductive films, composite materials, catalytic materials, energy storage materials and other fields. After the stable existence of graphene, it has received a lot of research attention. Graphene has broad application prospects in many fields such as next-generation integrated circuits, energy storage materials, flexible display materi...

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Problems solved by technology

Commonly used reducing agents include hydrazine hydrate, hydroquinone, sodium borohydride, reducing sugar, aluminum powder, etc., but both hydrazine hydrate and hydroquinone are highly toxic and harmful to humans and the environment; although ascorbic acid is a It is an efficient and environmentally friendly reducing agent, but its price is expensive, which is not conducive to large-scale industrial production

[0005] Based on the existing technology, the preparation method of graphene aqueous solution for intercalation heating and expansion by N-methylpyrrolidone has achieved initial success. However, in some industrial applications, the aqueous solution does not have the material properties of other organic compounds and cannot meet various requirements. Chemical industry use

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