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Preparation method and product and application of bifunctional thin film for formaldehyde removal

A formaldehyde removal and dual-function technology, which is applied in the field of preparation of dual-function thin films, can solve problems such as formaldehyde pollution, and achieve the effects of high porosity, high practical value, and large specific surface area

Active Publication Date: 2020-06-02
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems such as serious formaldehyde pollution in the indoor air at present, the purpose of the present invention is to provide a method for preparing a bifunctional film for formaldehyde removal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 24g of deionized water, add 2g of cerium nitrate hexahydrate in deionized water, add ammonia water dropwise to it after the cerium nitrate is completely dissolved until PH≈8, weigh 20g of activated carbon and dissolve in the above solution, immerse at room temperature overnight, and place in 50 o Dry overnight in oven C to obtain activated carbon modified with cerium.

[0023] Prepare 0.005mol / L potassium permanganate solution, measure 1000ml of the above-prepared potassium permanganate solution, weigh 20g of the above-mentioned cerium-modified activated carbon into the above-mentioned potassium permanganate solution, stir for 2h, filter, and place in 50 o Dry overnight in an oven C to obtain a manganese-based catalyst supported by cerium modified activated carbon.

[0024] Dissolve 12g polyacrylonitrile in 48g NN dimethylformamide (DMF), add 1g of the manganese-based catalyst supported on cerium-modified activated carbon prepared in the second step, stir vigorously for ...

Embodiment 2

[0026] Weigh 56g deionized water and 8g zirconium nitrate hexahydrate in deionized water. After the cerium nitrate is completely dissolved, add ammonia water until PH≈8. Weigh 40g activated carbon and dissolve it in the above solution. o Dry overnight in oven C to obtain activated carbon modified with cerium.

[0027] Prepare 0.005mol / L potassium permanganate solution, measure 1000ml of the above-prepared potassium permanganate solution, weigh 25g of the above-mentioned cerium modified activated carbon into the above-mentioned potassium permanganate solution, stir for 2h, filter, and place at 60 o Dry overnight in an oven C to obtain a manganese-based catalyst supported by zirconium-modified activated carbon.

[0028] Dissolve 12g polyacrylonitrile in 48g NN dimethylformamide (DMF), add 1g manganese-based catalyst supported on zirconium-modified activated carbon prepared in the second step, stir vigorously for 3h, and then ultrasonically shake for 1h to obtain a uniformly dispersed ...

Embodiment 3

[0030] Weigh 60g of deionized water and 4g of lanthanum nitrate hexahydrate in deionized water. After the cerium nitrate is completely dissolved, add ammonia water to it until PH≈8. Weigh 40g of activated carbon and dissolve it in the above solution. o Dry overnight in oven C to obtain activated carbon modified with cerium.

[0031] Prepare 0.005mol / L potassium permanganate solution, measure 1000ml of the above-prepared potassium permanganate solution, weigh 30g of the above-mentioned lanthanum modified activated carbon into the above-mentioned potassium permanganate solution, stir for 2h, filter, and place at 60 o Dry overnight in an oven C to obtain a manganese-based catalyst supported by zirconium-modified activated carbon.

[0032] Dissolve 12g polyacrylonitrile in 48g NN dimethylformamide (DMF), add 1g manganese-based catalyst supported on zirconium-modified activated carbon prepared in the second step, stir vigorously for 3h, and then ultrasonically shake for 1h to obtain a uni...

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PUM

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Abstract

The invention relates to a preparation method of a bifunctional film for formaldehyde removal, its products and applications. The film uses rare earth element-modified activated carbon loaded manganese-based catalyst as an active component and is prepared by an electrospinning method, including rare earth elements. Preparation of element-modified activated carbon, preparation of rare earth element-modified activated carbon supported manganese-based catalyst, preparation of electrospinning solution and preparation of electrospinning film. The film has both adsorption and catalytic oxidation effects on formaldehyde, thereby achieving the effect of formaldehyde removal. The film has a simple preparation method, low raw material prices, has certain effects on the removal of formaldehyde at different concentrations, and has great application prospects in the field of air purification.

Description

Technical field [0001] The invention belongs to the technical field of adsorption / catalysis and environmental protection, and particularly relates to a preparation method of a dual-functional film for formaldehyde removal, and products and applications thereof. Background technique [0002] Formaldehyde is one of the most common and most toxic pollutants in indoor air pollutants. It mainly comes from furniture, wood products panels and fillers, fabrics, paints, wallpaper, carpets and even curtains. Generally, the content of formaldehyde in newly renovated houses can exceed the standard by more than 6 times, and in some cases, it may exceed the standard by more than 40 times. The measured data shows that the indoor formaldehyde release period will last for 3-15 years under normal decoration. When the concentration of formaldehyde is greater than 0.08m³, it will cause throat discomfort, hoarseness, chest tightness, asthma, dermatitis, etc. Long-term, low-concentration exposure to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01J31/32B01J35/06B01J37/00B01D53/86
CPCB01D53/8668B01J20/0207B01J20/04B01J20/20B01J20/261B01J20/28033B01J31/32B01J37/0009B01D2259/4508B01J35/59
Inventor 何丹农蔡婷袁静赵昆峰杨玲金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH