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Ultraviolet degradation method for preparing high-quality graphene material

A graphene, high-quality technology, applied in the field of graphene, can solve problems such as pollution and safety, and achieve the effect of reducing cost, high conductivity, and promoting reaction

Inactive Publication Date: 2018-05-29
张静娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides an ultraviolet degradation method for preparing high-quality graphene materials, which solves the pollution and safety problems existing in the redox method of graphene materials in the prior art. The ultraviolet degradation method can not only adopt Graphene materials are prepared in an environmentally friendly way, which is safe and environmentally friendly, and photocatalytic materials can be recycled to reduce costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of ultraviolet degradation method that prepares high-quality graphene material, described ultraviolet degradation method comprises the steps:

[0034] Step 1, adding graphene oxide into deionized water, adding a dispersant and stirring evenly, and ultrasonically reacting for 1 hour to obtain a graphene oxide dispersion;

[0035] Step 2, adding the graphene oxide dispersion into a stirred tank, adding an initiator and stirring evenly to obtain a graphene oxide mixture;

[0036] Step 3, adding the graphene oxide mixed solution into the light reaction kettle, adding the photocatalytic block, sealing the light circulation and aeration reaction for 5 hours, and filtering to obtain the graphene mixed precipitation;

[0037] Step 4, put the graphene mixed precipitate and photocatalytic block into absolute ethanol for ultrasonic reaction for 2 hours, remove the photocatalytic block, filter and dry to obtain the graphene material.

[0038] The concentration of the graphe...

Embodiment 2

[0048] A kind of ultraviolet degradation method that prepares high-quality graphene material, described ultraviolet degradation method comprises the steps:

[0049] Step 1, adding graphene oxide into deionized water, adding a dispersant and stirring evenly, and ultrasonically reacting for 2 hours to obtain a graphene oxide dispersion;

[0050] Step 2, adding the graphene oxide dispersion into a stirred tank, adding an initiator and stirring evenly to obtain a graphene oxide mixture;

[0051] Step 3, adding the graphene oxide mixed solution into the light reaction kettle, adding the photocatalytic block, sealing the light circulation and aeration reaction for 7 hours, and filtering to obtain the graphene mixed precipitation;

[0052] Step 4, put the graphene mixed precipitate and photocatalytic block into absolute ethanol for 4 hours of ultrasonic reaction, remove the photocatalytic block, filter and dry to obtain the graphene material.

[0053] The concentration of the graphe...

Embodiment 3

[0063] A kind of ultraviolet degradation method that prepares high-quality graphene material, described ultraviolet degradation method comprises the steps:

[0064] Step 1, adding graphene oxide into deionized water, adding a dispersant and stirring evenly, and ultrasonically reacting for 1 hour to obtain a graphene oxide dispersion;

[0065] Step 2, adding the graphene oxide dispersion into a stirred tank, adding an initiator and stirring evenly to obtain a graphene oxide mixture;

[0066] Step 3, adding the graphene oxide mixed solution into the light reaction kettle, adding the photocatalytic block, sealing the light circulation and aeration reaction for 6 hours, and filtering to obtain the graphene mixed precipitation;

[0067] Step 4, put the graphene mixed precipitate and photocatalytic block into absolute ethanol for 3 hours of ultrasonic reaction, remove the photocatalytic block, filter and dry to obtain the graphene material.

[0068] The concentration of the graphen...

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Abstract

The invention discloses an ultraviolet degradation method for preparing a high-quality graphene material, which comprises the following steps: (Step 1) graphene oxide is added into deionized water, adispersant is added, and after uniform agitation, ultrasonic reaction is carried out for 1 to 2 hours, so that graphene oxide dispersion liquid is obtained; (Step 2) the graphene oxide dispersion liquid is added into an agitating kettle, an initiator is added, and uniform agitation is carried out, so that a graphene oxide mixed liquor is obtained; (Step 3) the graphene oxide mixed liquor is addedinto an illuminating reaction kettle, a photocatalytic block is added, sealed illuminated circulated aeration reaction is carried out for 5 to 7 hours, and filtration is carried out, so that a mixed graphene precipitate is obtained; (Step 4) the mixed graphene precipitate and a photocatalytic block are added into absolute ethyl alcohol to ultrasonically react for 2 to 4 hours, the photocatalytic block is removed, and after filtration, drying is carried out, so that the graphene material is obtained. The ultraviolet degradation method solves the problems of pollution and unsafety existing in sgraphene material oxidation-reduction method in the prior art; by adopting the ultraviolet degradation method, an environment-friendly method can be adopted to prepare the graphene material, which issafe and environmentally friendly, and moreover, the photocatalytic material is recyclable, so the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to an ultraviolet degradation method for preparing high-quality graphene materials. Background technique [0002] Since high-quality graphene was obtained by micromechanical exfoliation, the unique electrical and thermal conductivity and mechanical properties of graphene have attracted great interest from the scientific research community and the industry. Due to its excellent properties, the market demand for graphene is also increasing, which requires the continuous improvement of the preparation of graphene materials and the realization of green and pollution-free preparation technologies to obtain high-quality graphene in large quantities. However, the current preparation still faces great challenges in industrial application. First of all, the chemical vapor deposition technology and epitaxial growth method that can obtain high-quality graphene have problems such as low yield...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184
CPCC01B2204/20C01B2204/24C01B2204/30
Inventor 张静娟
Owner 张静娟
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