Preparation method of air purifying material and air purifying material

An air purification material, gallium nitride zinc oxide technology, applied in chemical instruments and methods, separation methods, physical/chemical process catalysts, etc., can solve problems such as waste of photocatalysts, waste of solar energy, and small contact surface area of ​​organic pollutants. Achieve the effects of improving utilization efficiency, increasing contact surface area, and increasing photodegradation effect

Inactive Publication Date: 2017-06-13
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the inventor applied the prior art, it was found that the traditional photocatalyst of the prior art, such as titanium dioxide, is a semiconductor responsive to ultraviolet light, which can only use less than 5% of solar energy ultraviolet light, resulting in a large waste of solar energy; and the traditional photocatalyst They are all granular solids, the contact surface area with organic pollutants is small, the photodegradation effect of organic pollutants is poor, and the photocatalyst cannot be fully utilized, resulting in waste of photocatalyst

Method used

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  • Preparation method of air purifying material and air purifying material
  • Preparation method of air purifying material and air purifying material
  • Preparation method of air purifying material and air purifying material

Examples

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Embodiment 1

[0038] refer to figure 1 , shows a flow chart of the steps of a method for preparing an air purification material according to an embodiment of the present invention, which may specifically include the following steps:

[0039] In step 110, zinc acetate and gallium nitrate are mixed to obtain a mixed substance, and a solvent is added to the mixed substance to form a sol-gel precursor.

[0040] In a preferred embodiment, zinc acetate with a purity of more than 99% and gallium nitrate with a purity of more than 99% can be mixed to obtain a mixed substance, and a solvent is added to the mixed substance to form a sol-gel ZnGa 2 o 4 Precursor. Both the zinc acetate and gallium nitrate are powdery substances.

[0041] Step 120, sintering the sol-gel precursor to form a porous granular zinc gallate precursor.

[0042] In a preferred embodiment, the sol-gel ZnGa 2 o 4 The precursor is placed in a sintering container for sintering, the sintering container includes a muffle furnac...

Embodiment 2

[0048] refer to figure 2 , shows a flow chart of the steps of a method for preparing an air purification material according to an embodiment of the present invention, which may specifically include the following steps:

[0049]Step 210, mixing zinc acetate and gallium nitrate in proportion to obtain a mixed substance.

[0050] In a preferred embodiment, zinc acetate with a purity of more than 99% and gallium nitrate with a purity of more than 99% can be mixed in proportion and poured into a beaker to obtain a mixed substance.

[0051] Step 220, adding ethanolamine into the mixed substance, and stirring at a set temperature to form a mixed solution.

[0052] In a preferred embodiment, ethanolamine with an analytical purity is added to the mixed substance in the beaker as a solvent, and stirred at a set temperature to form a mixed solution.

[0053] The ethanolamine whose purity is analytically pure refers to ethanolamine with high main component content, high purity, and low...

Embodiment 3

[0063] refer to image 3 , shows a flow chart of the steps of a method for preparing an air purification material according to an embodiment of the present invention, which may specifically include the following steps:

[0064] Step 310, mixing zinc acetate and gallium nitrate in a molar ratio of 1:1.5 to 1:2.5 to obtain a mixed substance.

[0065] In a preferred embodiment, zinc acetate with a purity of more than 99% and gallium nitrate with a purity of more than 99% can be mixed in a molar ratio of 1:1.5 to 1:2.5, for example, the molar ratio of zinc acetate to gallium nitrate 1:1.75, 1:2.15, 1:2.25, and poured into a beaker to obtain a mixed substance.

[0066] Step 320, adding ethanolamine to the mixed substance, and stirring at 65° C. to 80° C. for 1 to 2 hours to form a mixed solution.

[0067] In a preferred embodiment, analytically pure ethanolamine is added to the mixed substance in the beaker as a solvent, and stirred at a set temperature of 65° C. to 80° C. for 1 ...

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Abstract

The embodiment of the invention provides a preparation method of an air purifying material and the air purifying material and relates to the technical field of photocatalytic semiconductors. The preparation method comprises the following steps of: mixing zinc acetate and gallium nitrate to obtain a mixed substance; adding a solvent into the mixed substance to form a sol-gel shaped precursor; sintering the sol-gel shaped precursor to form a porous granular zinc gallate precursor; and nitriding the porous granular zinc gallate precursor to form a porous gallium nitride zinc oxide solid solution. Therefore, the problems that the utilization ratio of solar energy by a conventional photocatalyst is not high, the contact area with organic pollutants is relatively small, and the photo-degradation effect of the organic pollutants is poor are solved. The porous gallium nitride zinc oxide solid solution is synthesized through the sol-gel method and can respond to visible light, so that the utilization efficiency of solar energy is increased; meanwhile, the contact surface area with the organic pollutants is increased due to the porous structure, the utilization efficiency of a photocatalyst is increased, and the photo-degradation effect of the organic pollutants is enhanced.

Description

technical field [0001] The invention relates to the technical field of photocatalytic semiconductors, in particular to a preparation method of an air purification material and the air purification material. Background technique [0002] With the improvement of people's living standards, people pay more and more attention to the harm of air pollution to human health. Some organic pollutants in the air, such as formaldehyde, benzene, toluene, carbon monoxide, isopropanol, etc., seriously threaten people's health. [0003] At present, using traditional photocatalysts, such as titanium dioxide, by absorbing solar energy to generate photogenerated electrons and hole pairs, on the surface of the photocatalyst, photogenerated electrons and holes react with oxygen and water vapor in the air to generate different free radical scavengers. The organic pollutants in the air are degraded into water and carbon dioxide by free radical scavengers. [0004] When the inventor applied the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10B01D53/86
CPCB01J35/004B01D53/8668B01D2255/20792B01D2255/209B01D2255/802B01D2258/06B01J23/06B01J23/08B01J27/24B01J35/1014B01J35/1066B22F3/1143B01D53/86B01D53/8687B01D2256/22
Inventor 王利忠
Owner BOE TECH GRP CO LTD
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