Recyclable graphene

Abstract

The invention discloses recyclable graphene which comprises the following substances in parts by weight: 13-27 parts of carbon monofluoride, 11-23 parts of a hexa-bromine water dispersed body, 13-28 parts of methyl allyl cyclohexene, 10-14 parts of quartz sand, 15-36 parts of methanol, 75-80 parts of graphite, 5-8 parts of butyryltrihexylcitrate, 15-27 parts of nonyl hexyl trimellitate, 1-5 parts of coal ash, 50-77 parts of diethylene glycol benzoate and 78-80 parts of water. The process is simple and can be performed in multiple polar solvents, and the obtained graphene is good in quality and can be recycled when being used as graphene quantum dots for auxiliary peeling.

Description

technical field [0001] The present invention relates to a kind of recyclable graphene. Background technique [0002] Graphene is a nano-carbon material with a hexagonal lattice honeycomb structure formed by sp2 hybridization of a single layer of carbon atoms, which belongs to a new type of two-dimensional crystal material. Graphene has good electrical conductivity, thermal conductivity, optical transparency, and special mechanical and electronic properties. It has good application prospects in energy storage, transparent conductive devices, composite materials, and optoelectronic devices. Therefore, graphene has become a research hotspot in many disciplines such as materials science, physics and chemistry. [0003] The preparation methods of graphene mainly include mechanical exfoliation method, chemical vapor deposition method, oxidation intercalation re-reduction method and liquid phase exfoliation method. Among them, both mechanical exfoliation and chemical vapor deposi...

AI Technical Summary

Problems solved by technology

However, studies have shown that the yield of graphene prepared by the solvent stripping method has a great relationship with the solvent. Generally, N-2-methylpyrrolidone (NMP), N,N-dimethylformamide (DMF) and other high-boiling-point ones are selected. Organic solvents, there is a problem that it is difficult to remove residual solvents

In addition, even if a suitable solvent is selected, the yield of simple solvent stripping is generally very low, further improving the stripping yield requires adding inorganic salts, alkalis or surfactants, etc., and there is also the problem of impurity removal.