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Screen window or curtain capable of removing formaldehyde and volatile organic compounds (VOCs) and preparation method thereof

A technology for curtains and screens, applied in the field of screens or curtains and their preparation, can solve the problems of repeated cleaning and reuse of screens or screens, reduce the use effect of photocatalyst curtains or screens, expensive precious metal catalysts, etc., to achieve electron transfer High efficiency, good catalytic effect and stable structure

Active Publication Date: 2020-01-14
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above patents involve the removal of formaldehyde at room temperature, the effect of physical adsorbents is general, and the price of noble metal catalysts is expensive, which limits its large-scale preparation and application; and photocatalysts require ultraviolet light to effectively degrade formaldehyde, greatly reducing the use of photocatalyst curtains or screens Effect
[0006] In addition, the screen window or screen window prepared by the above method does not mention its repeated cleaning and reuse functions

Method used

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  • Screen window or curtain capable of removing formaldehyde and volatile organic compounds (VOCs) and preparation method thereof
  • Screen window or curtain capable of removing formaldehyde and volatile organic compounds (VOCs) and preparation method thereof
  • Screen window or curtain capable of removing formaldehyde and volatile organic compounds (VOCs) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Weigh 2.5kg of potassium permanganate, 2.0kg of ferric chloride, 1.0kg of cobalt chloride, 0.5kg of ammonium oxalate, 4.0kg of sodium oxalate, and 100L of distilled water in a reaction kettle, and mix well. The hydrothermal reaction was carried out at 120° C. for 12 h, and naturally cooled to room temperature after the reaction was completed. Soak and stir the above materials with pure water for 10 minutes. After the materials slowly settle, pour off the water in the upper layer, and repeat the operation 3 times until the water after washing has no color. Put the cleaned material into an oven for drying at 70° C. to obtain a dry solid catalyst.

[0048] (2) Weigh 2.5kg of potassium permanganate, 1.5kg of ferric chloride, 1.5kg of cobalt chloride, 4.0kg of sodium oxalate, and 100L of distilled water in a reaction kettle, and mix well. Under the condition of 85° C., the hydrothermal reaction is carried out for 10 hours, and the nylon mesh is placed in the reaction so...

Embodiment 2

[0053] (1) Weigh 3.0kg of potassium permanganate, 1.0kg of ferric chloride, 2.0kg of cobalt chloride, 4.0kg of potassium oxalate, and 100L of distilled water in a reaction kettle, and mix well. The hydrothermal reaction was carried out at 110° C. for 12 h, and naturally cooled to room temperature after the reaction was completed. Soak and stir the above materials with pure water for 10 minutes. After the materials slowly settle, pour off the water in the upper layer, and repeat the operation 3 times until the water after washing has no color. Put the cleaned material into an oven for drying at 70° C. to obtain a dry solid catalyst.

[0054] (2) Weigh 2.5kg of sodium permanganate, 1.5kg of ferric chloride, 1.5kg of cobalt chloride, 4.0kg of ammonium oxalate, and 100L of distilled water in a reaction kettle, and mix well. Under the condition of 85°C, carry out the hydrothermal reaction for 10 hours, respectively put the large-pore (30 mesh), medium-pore (40-mesh) and small-pore...

Embodiment 3

[0059] (1) Weigh 3.5kg of sodium permanganate, 1.5kg of ferric chloride, 2.0kg of cobalt chloride, 3.5kg of potassium oxalate, and 100L of distilled water in a reaction kettle, and mix well. The hydrothermal reaction was carried out at 100° C. for 12 h, and naturally cooled to room temperature after the reaction was completed. Soak and stir the above materials with pure water for 10 minutes. After the materials slowly settle, pour off the water in the upper layer, and repeat the operation 3 times until the water after washing has no color. Put the cleaned material into an oven for drying at 70° C. to obtain a dry solid catalyst.

[0060] (2) Weigh 3.0kg of potassium permanganate, 1.0kg of ferric chloride, 1.5kg of cobalt chloride, 4.0kg of sodium oxalate, and 100L of distilled water in a reaction kettle, and mix well. Under the condition of 100 DEG C, the hydrothermal reaction is carried out for 10 hours, and the glass fiber mesh is placed in the reaction solution to continue...

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Abstract

The invention belongs to the field of house furnishing materials, and discloses a screen window or curtain capable of removing formaldehyde and volatile organic compounds (VOCs) and a preparation method thereof. The preparation method comprises the following steps of firstly, carrying out a hydrothermal reaction on permanganate, an iron salt, other transition metal salts and oxalate serving as rawmaterials to prepare a manganese-based catalyst, and then adding the manganese-based catalyst into water together with nano SiO2 for ultrasonic dispersion to obtain a gel coating; soaking a screen window mesh material or curtain base cloth in a hydrothermal reaction solution of the catalyst for reacting to obtain a screen window mesh or curtain in which the catalyst is immobilized in situ; and then coating the screen window mesh or curtain in which the catalyst is immobilized in situ with the gel coating, and carrying out drying to obtain the screen window or curtain capable of removing the formaldehyde and VOCs. The screen window or curtain disclosed by the invention realizes the rapid degradation of low-concentration formaldehyde and VOCs at room temperature, and has a good applicationprospect.

Description

technical field [0001] The invention belongs to the field of home improvement materials, and in particular relates to a screen window or curtain for removing formaldehyde and VOCs and a preparation method thereof. Background technique [0002] According to the definition of WHO, volatile organic compounds (VOCs) refer to various organic compounds with a boiling point of 50°C-260°C under normal pressure. According to their chemical structure, VOCs can be further divided into: alkanes, aromatics, esters, aldehydes and others. More than 300 species have been identified so far. The most common are benzene, toluene, xylene, styrene and so on. Volatile organic compounds have a great impact on human health. Living in a room polluted by volatile organic compounds for a long time can cause chronic poisoning, general weakness, drowsiness, itchy skin, endocrine disorders, damage to the liver and nervous system, etc. At present, the commonly used methods for indoor removal of VOCs in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47H23/08E06B7/28E06B9/52B01D53/86B01D53/72B01D53/44
CPCA47H23/08B01D53/864B01D53/8668B01D53/8687B01D2255/2073B01D2255/20738B01D2257/7027B01D2257/704B01D2257/708B01D2259/4508E06B7/28E06B9/52Y02A50/20
Inventor 肖凯军程瑶银玉容谌凯
Owner SOUTH CHINA UNIV OF TECH
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