Preparation method of graphene/copper/active carbon composite material

A composite material and graphene technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of insufficient effective exposed area, decreased catalytic activity, and uneven distribution and other problems, to achieve the effects of easy industrial production and application, good dispersion of active sites, and simple preparation process

Inactive Publication Date: 2019-03-29
河北宇轩纳米科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the activated carbon has a microporous structure, which limits its adsorption performance. In response to this problem, researchers have achieved certain results from the preparation of new carbon materials and the modification of ordinary activated carbon.
For example: different active components are loaded on the surface of activated carbon materials, but since most of the supported catalysts are metal catalysts containing noble metals su

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Take graphene oxide, dissolve it in deionized water, stir and sonicate to obtain a graphene oxide aqueous solution with a mass concentration of 0.05%, and set it aside;

[0023] (2) Weigh the copper salt solution according to the mass ratio of copper: graphene oxide of 1:1, add it to the graphene oxide aqueous solution in step (1), stir evenly, drop into the alkaline solution, and adjust the pH of the mixed solution When it is 8, continue to stir for more than 30 minutes until the mixture is uniform and ready for use;

[0024] (3) According to the mass ratio of graphene oxide and activated carbon being 1:15, take activated carbon and add it to the mixed solution in step (2), and stir evenly;

[0025] (4) The mixed solution obtained in step (3) was placed in a closed reaction kettle, and hydrothermally reacted at a temperature of 200 ° C for 8 h;

[0026] (5) Take out the mixed liquid after the reaction in step (4) is completed and cooled, perform solid-liquid separ...

Embodiment 2

[0030] (1) Take graphene oxide, dissolve it in deionized water, stir and sonicate to obtain a graphene oxide aqueous solution with a mass concentration of 3%, and set it aside;

[0031] (2) Weigh the copper salt solution according to the mass ratio of copper: graphene oxide of 3:1, add it to the graphene oxide aqueous solution in step (1), stir evenly, drop into the alkaline solution, and adjust the pH of the mixed solution When it is 8, continue to stir for more than 30 minutes until the mixture is uniform and ready for use;

[0032] (3) According to the mass ratio of graphene oxide and activated carbon being 1:10, take activated carbon and add it to the mixed solution in step (2), and stir evenly;

[0033] (4) Put the mixed solution obtained in step (3) in a closed reaction kettle, and conduct a hydrothermal reaction at a temperature of 160°C for 5 hours;

[0034] (5) Take out the mixed liquid after the reaction in step (4) is completed and cooled, perform solid-liquid sepa...

Embodiment 3

[0038] (1) Take graphene oxide, dissolve it in deionized water, stir and sonicate to obtain a graphene oxide aqueous solution with a mass concentration of 0.05~3%, and set it aside;

[0039] (2) Weigh the copper salt solution according to the mass ratio of copper: graphene oxide of 2:1, add it to the graphene oxide aqueous solution in step (1), stir evenly, drop into the alkaline solution, and adjust the pH of the mixed solution 10, continue to stir for more than 30 minutes, until the mixture is uniform, and set aside;

[0040] (3) According to the mass ratio of graphene oxide and activated carbon being 1:20, take activated carbon and add it to the mixed solution in step (2), and stir evenly;

[0041] (4) Put the mixed solution obtained in step (3) in a closed reaction kettle, and conduct a hydrothermal reaction at a temperature of 180°C for 6 h;

[0042] (5) Take out the mixed liquid after the reaction in step (4) is completed and cooled, perform solid-liquid separation thro...

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PUM

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Abstract

The invention relates to a preparation method of a graphene/copper/active carbon composite material. According to the method, firstly, graphene oxide and copper salt are uniformly mixed; after no precipitate is generated, basic solution and active carbon are added; suspension liquid is obtained after the uniform stirring; next, the suspension liquid is put into a reaction kettle for constant temperature heat treatment; performing centrifugal separation; performing drying treatment on obtained paste solids; then, putting the materials into a tubular furnace to perform heat reduction in H2/Ar mixed atmosphere; performing granulation on the obtained powder; finally preparing graphene/copper/active carbon composite material particles. The catalysis activity and the specific surface area of theprepared graphene/copper/active carbon composite material are obviously enhanced and increased; the advantages of developed pore structures, high intensity, low impurity content, proper granularity,small resistance, easy regeneration and the like are realized; the operation process is simple; the efficiency is high; the industrialized production and application can be easily realized.

Description

technical field [0001] The invention relates to a composite material, in particular to a preparation method of a graphene / copper / activated carbon composite material. Background technique [0002] As an excellent adsorption material, activated carbon is often used in air purification, water purification, industrial waste gas recovery, etc. Its application scope involves chemical industry, food processing, agriculture, national defense and other fields, and plays an important role in environmental protection and human life. The adsorption properties of activated carbon depend on its well-developed pore structure and unique surface chemistry. However, most activated carbons have a microporous structure, which limits their adsorption performance. In response to this problem, researchers have achieved certain results from the preparation of new carbon materials and the modification of ordinary activated carbons. For example: different active components are loaded on the surface ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01J23/72B01J35/10B01J37/10
CPCB01J20/20B01J20/28054B01J20/3078B01J23/72B01J35/10B01J37/10
Inventor 耿晓欣宋晋高晓晔侯林艳吴洪鹏
Owner 河北宇轩纳米科技有限责任公司
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