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Graphene/cobalt oxide composite air purification material and preparation method thereof

An air purification material, a technology of cobalt alkene oxide, which is applied in the field of graphene cobalt oxide composite air purification material and its preparation, can solve the problems of no purification material available, and achieve suitable for large-scale industrial production, reduce the cost of use, and have high economic benefits Effect

Inactive Publication Date: 2019-06-25
广州康滤净化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is no purification material that combines cobalt oxide and graphene.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A graphene cobalt oxide composite air purification material, the raw materials of which include: 0.1% graphene, 0.7% urea, 0.1% cobalt nitrate hexahydrate, 0.1% surfactant, and 99% activated carbon.

[0031] Graphene is prepared by mechanical exfoliation.

[0032] Surfactants include polyvinyl alcohol and polyethylene glycol.

[0033] The present embodiment also provides the preparation method of this graphene cobalt oxide composite air purification material, which comprises:

[0034] Step 1, taking each raw material in proportion;

[0035] Step 2, the graphene is dispersed in the mixed solution of water and ethanol; the mass concentration of the graphene after dispersion is 1%.

[0036] Step 3: ultrasonically disperse the mixed solution obtained in step 2 for 0.5, and then place the obtained sol-like mixed solution in a vacuum drying oven at 40° C. for drying, and freeze-dry the mixed solution after it is dried to a gel state.

[0037] Step 4, place the freeze-dried...

Embodiment 2

[0042] A graphene cobalt oxide composite air purification material, the raw material of which comprises, by mass percentage, 1% of graphene, 2% of urea, 1% of cobalt nitrate hexahydrate, 1% of surfactant and 95% of activated carbon.

[0043] Graphene is prepared by mechanical exfoliation.

[0044] The surfactant comprises sodium lignosulfonate.

[0045] The present embodiment also provides the preparation method of this graphene cobalt oxide composite air purification material, which comprises:

[0046] Step 1, taking each raw material in proportion;

[0047] Step 2, the graphene is dispersed in the mixed solution of water and ethanol; the mass concentration of the graphene after dispersion is 3%.

[0048] Step 3: ultrasonically disperse the mixed solution obtained in step 2 for 0.8 h, and then place the obtained sol-like mixed solution in a vacuum drying oven at 45° C. for drying, and freeze-dry the mixed solution after it is dried to a gel state.

[0049] Step 4: Place the ...

Embodiment 3

[0054] A graphene cobalt oxide composite air purification material, the raw materials of which include 2% graphene, 1% urea, 0.3% cobalt nitrate hexahydrate, 0.3% surfactant, and 96.4% activated carbon.

[0055] Graphene is prepared by a redox method.

[0056] The surfactant comprises polyvinylpyrrolidone (PVP).

[0057] The present embodiment also provides the preparation method of this graphene cobalt oxide composite air purification material, which comprises:

[0058] Step 1, taking each raw material in proportion;

[0059] Step 2, the graphene is dispersed in the mixed solution of water and ethanol; the mass concentration of the graphene after dispersion is 5%.

[0060] Step 3: ultrasonically disperse the mixed solution obtained in step 2 for 1 h, then place the obtained sol-like mixed solution in a vacuum drying oven at 50° C. for drying, and freeze-dry the mixed solution after it is dried to a gel state.

[0061] Step 4: Place the freeze-dried product in step 3 in a c...

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Abstract

The invention discloses a graphene cobalt oxide composite air purification material and a preparation method thereof. The material comprises the following raw materials: 0.1%-5% of graphene, 0.1%-2% of urea, 0.1%-1% of cobalt nitrate hexahydrate, 0.1%-1% of a surfactant and 94.5%-99% of activated carbon. The invention also provides a preparation method of the material. The preparation method comprises the following steps: step 1, weighing the raw materials in proportion; step 2, dispersing graphene into a mixed solution of water and ethanol; step 3, ultrasonically dispersing the mixed solution, and then carrying out vacuum drying and freeze drying; 4, calcining the product under the protection of nitrogen; 5, grinding the powder through a ball mill; step 6, preparing an aqueous solution from the ground powder, adding a surfactant, and stirring the solution under the condition of normal temperature; and step 7, adding activated carbon and stirring and drying the solution. The prepared material can prolong the service life of the air purifier and reduce the use cost, and has a very good application prospect.

Description

technical field [0001] The invention relates to a purification material and a preparation method thereof, in particular to a graphene cobalt oxide composite air purification material and a preparation method thereof. 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. [0003] Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. [0004] The research and application development of graphene continues to heat up, and materials related to graphene are widely used in battery electrode materials, semiconductor devices, transparent displays, sensors, capacitors, transistors, etc. In view of the excellent performance and potential application value of graphene materials, a series of impor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J23/75B01D53/02B01D53/86B01D53/72B01D53/50B01D53/56
Inventor 王强
Owner 广州康滤净化科技有限公司