A method for rapid peeling off of graphene oxide suction filter membrane and transfer to substrate

Abstract

The invention discloses a method for rapidly peeling and transferring a graphene oxide leaching film to a substrate. The method specifically comprises the steps of firstly adding graphene oxide in water, forming graphene oxide dispersion liquid in an ultrasonic dispersion way, arranging the substrate on a sand core of a leaching flask, installing a leaching device, then pouring the prepared graphene oxide dispersion liquid into the leaching device, and starting leaching; then taking out the substrate which is attached with a leached graphene oxide film, and putting the substrate into an organic solvent, enabling the graphene oxide film to be rapidly formed through dewatering, and enabling the graphene oxide film to fall off the substrate; enabling the smooth substrate to be in direct contact with the floated graphene oxide film in the organic solvent, and enabling the graphene oxide film to transfer to be attached onto the substrate. Through the method disclosed by the invention, the drying time is not needed at all, and the time for peeling a thick film is greatly shortened; meanwhile, a thin film can also be peeled, a smooth graphene oxide film can be obtained, and the shape can be well maintained.

Description

technical field [0001] The invention relates to a method for quickly peeling off a graphene oxide suction filter membrane and transferring it to a substrate. The invention belongs to the technical field of rapid stripping and transfer of graphene oxide suction filter membranes. Background technique [0002] With the discovery of graphene, its excellent electrical, mechanical, thermal and magnetic properties have attracted widespread attention. As an important derivative of graphene, graphene oxide has also received more and more attention. Graphene oxide, as a new type of carbon material with excellent performance, has a honeycomb two-dimensional structure. Due to its special physical and chemical properties, such as high specific surface area, high porosity, and rich oxygen-containing functional groups, it is non-toxic Environmental protection and other characteristics. Graphene oxide and its reduced product graphene are used in many fields, such as adsorption (Yubing Su...

AI Technical Summary

Problems solved by technology

However, the biggest problem facing the suction filtration method is how to peel off the graphene oxide film from the substrate.

If the GO film is too thin, the complete film cannot be peeled off from the substrate; and if the film is thick enough, it will take a lot of time to completely dry the GO

In some experiments, corrosive liquids such as acetone were used to dissolve the substrate, and the morphology of the film obtained in this way could not be kept flat.

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