A kind of graphene high-energy catalytic physical exfoliation preparation device and method

Abstract

The invention discloses a graphene high-energy catalytic physical stripping preparation device and method. The preparation device includes a fixed box, and an air blowing table for blowing hot air is installed on the bottom inner wall of the fixed box, and a blowing table is installed directly above the air blowing table. The centrifugal column connected with the fixed box and driven by the driver, the present invention can automatically sieve out the aqueous solution containing large-size graphene during the preparation of graphene through the centrifugal screening cylinder, discharge printing column and atomizing column, and the aqueous solution Fast drying, so that graphene is attached to the surface of the flexible pattern substrate in powder form. During implementation, the graphene aqueous solution is sucked through the centrifugal screening cylinder, and then the centrifugal column is driven to drive the centrifugal screening cylinder to rotate, so that large-sized graphene is centrifuged along with the aqueous solution. Sieve out, and then spray the filamentous graphene aqueous solution towards the flexible pattern substrate through the spray printing hole, and at the same time quickly dry the sprayed filamentary graphene aqueous solution through the diversion sleeve, so that the graphene is directly attached to the flexible pattern in powder form. Patterned base surface.

Description

technical field [0001] The invention relates to the technical field of graphene preparation, in particular to a graphene high-energy catalytic physical stripping preparation device and method. Background technique [0002] Graphene is a carbon atom with sp 2 The hybrid orbitals form a hexagonal two-dimensional carbon nanomaterial with a honeycomb lattice. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. [0003] At present, the preparation methods of graphene mainly include: 1) micromechanical exfoliation method, that is, directly peeling graphene flakes from larger crystals; 2) epitaxial growth method, that is, from silicon carbide or Epitaxial growth of graphene on the surface of metals, etc., 3) oxidation-reduction method, the whole process involves oxidizing gra...

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of graphene high-energy catalyzed physical exfoliation preparation device and method, to solve the problem of large-sized graphene in the aqueous solution once it continues to be subjected to frequent ultrasonic shocks after the larger-sized graphene is made by ultrasonic waves in the prior art Graphene will become smaller. If it is processed into an electronic pattern shape, it will easily affect the technical problems of subsequent use.

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