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Preparation method of high-infrared emitting ability graphene/MnO2 porous material

A technology of infrared emissivity and porous materials, which is applied in the field of preparation of graphene/MnO2 porous materials with high infrared emissivity, can solve problems such as unreported, and achieves the advantages of easily available raw materials, simple preparation method and high far-infrared emissivity. Effect

Inactive Publication Date: 2018-01-05
墨烯材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Graphene / MnO 2 Composite materials are currently mainly researched on their electrochemical properties. As electrode materials, research on far-infrared properties has not been reported.

Method used

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  • Preparation method of high-infrared emitting ability graphene/MnO2 porous material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1, see figure 1 :

[0025] The invention provides a high infrared emissivity graphene / MnO 2 A method for preparing a porous material, comprising the steps of:

[0026] 1) Put 0.2g of graphene powder prepared by mechanical exfoliation into a beaker, add 100ml of distilled water, and ultrasonically disperse for 40min to completely disperse the graphene;

[0027] 2) Add 1.4542g potassium permanganate to the solution in step 1), and continue ultrasonic dispersion for 30min;

[0028] 3) Move the mixed solution in step 2) into a hydrothermal synthesis reactor, put the reactor into a box-type atmosphere furnace, and conduct a hydrothermal reaction at 150°C for 6 hours;

[0029] 4) Suction filtration, washing several times with distilled water, and drying in an oven to obtain the product high infrared emissivity graphene / MnO 2 Porous material powder.

[0030] Scanning electron microscopy (SEM) was used to analyze the microscopic morphology of the product of this ex...

Embodiment 2

[0032] The invention provides a high infrared emissivity graphene / MnO 2 A method for preparing a porous material, comprising the steps of:

[0033] 1) Put 0.2g of graphene powder prepared by mechanical exfoliation into a beaker, add 100ml of distilled water, and ultrasonically disperse for 40min to completely disperse the graphene;

[0034] 2) Add 3.2719g potassium permanganate to the solution in step 1), and continue ultrasonic dispersion for 30min;

[0035] 3) Move the mixed solution in step 2) into a hydrothermal synthesis reactor, put the reactor into a box-type atmosphere furnace, and conduct a hydrothermal reaction at 150°C for 6 hours;

[0036] 4) Suction filtration, washing several times with distilled water, and drying in an oven to obtain the product high infrared emissivity graphene / MnO 2 Porous material powder.

[0037] After testing, the infrared emissivity of the product is 0.96.

Embodiment 3

[0039] The invention provides a high infrared emissivity graphene / MnO 2 A method for preparing a porous material, comprising the steps of:

[0040] 1) Put 0.1g of graphene powder prepared by mechanical exfoliation into a beaker, add 100ml of distilled water, and ultrasonically disperse for 40 minutes to completely disperse the graphene;

[0041] 2) Add 3.4537g potassium permanganate to the solution in step 1), and continue ultrasonic dispersion for 30min;

[0042] 3) Move the mixed solution in step 2) into a hydrothermal synthesis reactor, put the reactor into a box-type atmosphere furnace, and conduct a hydrothermal reaction at 150°C for 6 hours;

[0043] 4) Suction filtration, washing several times with distilled water, and drying in an oven to obtain the product high infrared emissivity graphene / MnO 2 Porous material powder.

[0044] After testing, the infrared emissivity of the product is 0.97.

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Abstract

The invention provides a preparation method of a high-infrared emitting ability graphene / MnO2 porous material. The preparation method comprises that graphene and potassium permanganate as raw materials are uniformly dispersed in an aqueous solution by a simple ultrasonic dispersion method and then the graphene / MnO2 porous material is prepared through a hydrothermal reduction reaction. The preparation method has simple processes and is easy to operate. The porous material has infrared emitting ability of 0.94 to 0.98 at 8 to 14 microns, has the advantages of high far-infrared emissivity, stability, environmental friendliness and easy availability of raw materials, can be easily industrialized and has great application potential in the field of far-infrared products.

Description

technical field [0001] The invention relates to the technical field of functional material manufacturing, in particular to a high infrared emissivity graphene / MnO 2 Preparation methods of porous materials. Background technique [0002] Sun rays can be broadly classified into visible light and invisible light. Visible light will refract light of purple, blue, blue, green, yellow, orange and red after passing through the prism. The light outside the red light, in the spectrum with a wavelength from 0.75 μm to 1000 μm, is called infrared light, also known as infrared light. Infrared rays belong to the category of electromagnetic waves, which are electromagnetic waves with strong thermal effects. Infrared rays have a wide range of wavelengths. People divide infrared rays in different wavelength ranges into near-infrared, mid-infrared, and far-infrared regions. Electromagnetic waves with corresponding wavelengths are called near-infrared, mid-infrared, and far-infrared. Far-i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65
CPCC09K11/65
Inventor 丁爱娥陈国华张艺红
Owner 墨烯材料科技有限公司
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