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Folded graphene and controllable preparation method thereof

A graphene and wrinkle technology, applied in the field of graphene with wrinkled structure and its controllable preparation, can solve uncontrollable, random and other problems, and achieve the effect of simple equipment and strong controllability

Active Publication Date: 2015-04-01
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of graphene preparation and transfer to the target substrate, although many wrinkles can be formed, after theoretical research and experimental verification, there is an upper limit to the height due to the influence of the van der Waals force between the wrinkles (Structure and electronic transport in graphene wrinkles, Nano Letters, 2012,12(7):3431.), and its height, width and position are random and uncontrollable

Method used

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  • Folded graphene and controllable preparation method thereof
  • Folded graphene and controllable preparation method thereof
  • Folded graphene and controllable preparation method thereof

Examples

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preparation example Construction

[0034] The invention uses a liquid phase method to controlly prepare graphene with a wrinkled structure. The preparation method of this wrinkled graphene comprises the steps:

[0035] 1) Put the copper-based graphene prepared by chemical vapor deposition on the iron trichloride (FeCl 3 ) on the surface of the solution;

[0036] 2) After 30-60 minutes, the copper substrate is completely etched away by the ferric chloride solution, and the graphene floating on the surface of the ferric chloride solution is transferred to deionized water with a glass slide for cleaning;

[0037] 3) After 3-10 minutes, use a glass slide to transfer the graphene floating on the surface of deionized water to another clean deionized water for cleaning again, and cycle 2-10 times;

[0038] 4) transfer the graphene floating on the surface of deionized water to a petri dish equipped with an organic solution with a glass slide; the volume ratio of organic solvent / deionized water in the organic solution...

Embodiment 1

[0044] Prepare a ferric chloride solution with a concentration of 0.5mol / L and pour it into a glass petri dish. Take a piece of copper-based graphene prepared by chemical vapor deposition with a size of 15mm×10mm, place it in the previously prepared ferric chloride solution, and make it float on the surface of the ferric chloride solution. After 30 minutes, it can be observed that part of the copper substrate is etched by the ferric chloride solution; after another 15 minutes, it can be observed that the copper substrate is completely etched by the ferric chloride solution, leaving graphene floating on the ferric chloride solution. on the solution.

[0045] Use a clean glass slide to transfer the graphene floating on the ferric chloride solution to clean deionized water, make it float on the surface of the deionized water for cleaning; after 5min, use a clean glass slide to transfer the graphene floating on the surface of the deionized water The graphene on the deionized wate...

Embodiment 2

[0050] Prepare a ferric chloride solution with a concentration of 0.8mol / L and pour it into a glass petri dish. Take a piece of copper-based graphene prepared by chemical vapor deposition with a size of 15mm×10mm, place it in the previously prepared ferric chloride solution, and make it float on the surface of the ferric chloride solution. After 30 minutes, it can be observed that part of the copper substrate is etched by the ferric chloride solution; after another 15 minutes, it can be observed that the copper substrate is completely etched by the ferric chloride solution, leaving graphene floating on the ferric chloride solution. on the solution.

[0051] Use a clean glass slide to transfer the graphene floating on the ferric chloride solution to clean deionized water, make it float on the surface of the deionized water for cleaning; after 5min, use a clean glass slide to transfer the graphene floating on the surface of the deionized water The graphene on the deionized wate...

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Abstract

The invention discloses graphene with a folded structure. The structure of the graphene is formed by shrinking the graphene in a liquid phase environment to form ups and downs on the surface, wherein the folded parts are cone-shaped, and the height, width and distribution density of the folded parts are uniform and controllable. The folded parts can be formed in the processes of preparing the graphene and transferring the graphene to a target substrate, and are formed randomly and uncontrollably, but the folded structure formed controllably in a liquid phase, disclosed by the invention, can solve the problems. The invention realizes a novel graphene folded structure and provides a method for preparing the structure simply, conveniently and quickly on a large scale, and the graphene folded structure can be used in the fields of new energy resources, sensors, flexible electronic devices and the like.

Description

technical field [0001] The invention relates to a film material, which belongs to the technical field of preparation and application of transparent film materials, in particular to a graphene with a wrinkled structure and a controllable preparation method thereof. Background technique [0002] Graphene is a flat film composed of carbon atoms in a hexagonal honeycomb lattice, a two-dimensional material with a thickness of only one atom. Its unique structure determines that it has many excellent physical properties, such as low density, high strength, high electron mobility, high light transmittance and low resistivity, etc. It shows broad application prospects as a high-performance functional material, so It has attracted much attention from academia and industry. Graphene with a wrinkled structure further promotes the transformation of graphene into practical applications and expands the field and scope of graphene applications. [0003] The ups and downs on the surface of...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 桂许春陈文骏梁秉豪汤子康
Owner SUN YAT SEN UNIV
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