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Method for preparing mesoporous graphene material

A mesoporous graphene, graphene technology, applied in graphene, nano-carbon and other directions, can solve problems such as unfavorable practical application, uneven degree of graphitization, etc., and achieve the effects of uniform pores, cost reduction, and larger specific surface.

Active Publication Date: 2018-06-22
浙江景仁科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the transition metal and mesoporous carbon cannot be completely and uniformly mixed, the degree of graphitization at different positions of the prepared mesoporous graphene material is very uneven, which is not conducive to its practical application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of mesoporous graphene material, comprising the steps of:

[0036] Step 1, adding graphene oxide to deionized water, then adding polymaleic acid, and ultrasonically stirring until completely dispersed to obtain a graphene oxide dispersion;

[0037] Step 2, adding sodium chloride to the graphene oxide dispersion and stirring until completely dissolved, then reacting with microwaves for 1 hour to obtain a second dispersion;

[0038] Step 3, adding the second dispersion liquid to a vacuum distillation reactor for 3 hours, and obtaining a viscous liquid after cooling;

[0039] Step 4, adding the viscous liquid into the mold and heating and reacting for 1 hour to obtain a constant temperature curing mold;

[0040] Step 5, put the constant temperature curing mold into anhydrous methanol to seal the electrolysis reaction for 3 hours, add deionized water to seal the reflux electrolysis reaction for 1 hour, and obtain the mesoporous graphene oxide material;...

Embodiment 2

[0052] A preparation method of mesoporous graphene material, comprising the steps of:

[0053] Step 1, adding graphene oxide to deionized water, then adding polymaleic acid, and ultrasonically stirring until completely dispersed to obtain a graphene oxide dispersion;

[0054] Step 2, adding sodium chloride to the graphene oxide dispersion and stirring until completely dissolved, then reacting with microwaves for 3 hours to obtain a second dispersion;

[0055] Step 3, adding the second dispersion liquid to a vacuum distillation reactor for 5 hours, and obtaining a viscous liquid after cooling;

[0056] Step 4, adding the viscous liquid into the mold and heating and reacting for 2 hours to obtain a constant temperature curing mold;

[0057] Step 5, put the constant temperature curing mold into anhydrous methanol to seal the electrolysis reaction for 6 hours, add deionized water to seal the reflux electrolysis reaction for 2 hours, and obtain the mesoporous graphene oxide materi...

Embodiment 3

[0069] A preparation method of mesoporous graphene material, comprising the steps of:

[0070] Step 1, adding graphene oxide to deionized water, then adding polymaleic acid, and ultrasonically stirring until completely dispersed to obtain a graphene oxide dispersion;

[0071] Step 2, adding sodium chloride to the graphene oxide dispersion and stirring until completely dissolved, then reacting with microwaves for 2 hours to obtain a second dispersion;

[0072] Step 3, adding the second dispersion liquid to a vacuum distillation reactor for 4 hours, and obtaining a viscous liquid after cooling;

[0073] Step 4, adding the viscous liquid into the mold and heating and reacting for 2 hours to obtain a constant temperature curing mold;

[0074] Step 5, put the constant temperature curing mold into anhydrous methanol to seal the electrolysis reaction for 5 hours, add deionized water to seal the reflux electrolysis reaction for 2 hours, and obtain the mesoporous graphene oxide materi...

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PUM

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Abstract

The invention discloses a method for preparing a mesoporous graphene material. The method comprises the steps that step 1, graphene oxide is added to deionized water, polymaleic acid is added, and ultrasonic stirring is conducted until the graphene oxide and the polymaleic acid are completed dispersed to obtain graphene oxide dispersion; step 2, sodium chloride is added into the graphene oxide dispersion and stirred until the sodium chloride is completely dissolved, and microwave chemical reaction is conducted for 2 hours to obtain second dispersion; step 3, the second dispersion is added intoa reduced pressure distillation reaction kettle for reaction for 4 hours, and viscous fluid is obtained after cooling is conducted; step 4, the viscous fluid is added into a mould for heating reaction for 2 hours to obtain a constant temperature curing mould; step 5, the constant temperature curing mould is placed into absolute methanol for sealed electrolytic reaction for 5 hours, and the deionized water is added for sealed reflux electrolytic reaction for 2 hours to obtain a mesoporous graphene oxide material; step 6, reduction reaction is conducted on the mesoporous graphene oxide materialfor 3 hours to obtain the mesoporous graphene material. The problem that the graphitization degree of the mesoporous graphene material is nonuniform is solved.

Description

technical field [0001] The invention belongs to the technical field of graphene materials, in particular to a preparation method of mesoporous graphene materials. Background technique [0002] Mesoporous ordered graphene material has a high degree of graphitization and a high degree of structural order, so it has excellent electrical conductivity, which is very conducive to the transmission of electrons and ions, making it widely used in energy storage fields such as lithium batteries and The field of new energy materials such as solar cells has very broad application prospects. Not only that, because the mesoporous ordered graphene material has a huge specific surface area and pore volume, it has a very strong adsorption capacity, so it also has a very important position in the field of adsorbents, and it also makes it a catalyst, hydrogen storage Materials, drug carriers and other aspects have very important application prospects. In addition, ordered mesoporous graphene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184
Inventor 刘伟
Owner 浙江景仁科技有限责任公司
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