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Room-temperature formaldehyde decomposing agent suitable for air purifier and preparation method thereof

An air purifier and formaldehyde decomposition technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, can solve problems such as limited adsorption, pollution, and limited catalytic efficiency, and achieve efficient capture, efficient indoor formaldehyde pollution, and The effect of solving indoor formaldehyde pollution

Inactive Publication Date: 2016-02-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical adsorption, such as activated carbon and diatomaceous earth materials, has limited adsorption capacity and needs to be replaced frequently, and will form new releases with changes in temperature and humidity; chemical adsorption can handle a large amount of formaldehyde, but most of them contain Certain toxic compounds can cause new types of pollution; TiO 2 The base photocatalyst has requirements for ultraviolet light flux, which limits the TiO 2 The thickness of the base catalytic material limits its mechanical volume catalytic efficiency

Method used

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  • Room-temperature formaldehyde decomposing agent suitable for air purifier and preparation method thereof
  • Room-temperature formaldehyde decomposing agent suitable for air purifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Weigh 0.28g of isopropyl titanate, disperse in 13.8g of concentrated hydrochloric acid, stir and mix for 10 minutes to obtain isopropyl titanate hydrochloric acid solution; weigh 1g of diatomaceous earth and mix it into the aforementioned isopropyl titanate In the hydrochloric acid solution, fully stir and disperse evenly, and the obtained mixed solution is named mixed solution 1;

[0021] (2) Weigh 0.22g cetyltrimethylammonium bromide and dissolve it in 27.3ml deionized water to make a 0.8wt% aqueous solution, then add it dropwise to mixed solution 1 to obtain solution A; then weigh urea 1.96 g was added into solution A, stirred for 20 minutes, and the mixed solution was named as mixed solution 2, and its total volume was 40ml;

[0022] (3) Measure 120ml of ethylene glycol, mix and stir with the mixed solution 2 for 10 minutes, and the obtained mixed solution is named as the precursor solution 3;

[0023] (4) Transfer the obtained precursor solution 3 to a hydroth...

Embodiment 2

[0028] (1) Weigh 0.42g of isopropyl titanate, disperse in 13.8g of concentrated hydrochloric acid, stir and mix for 10 minutes to obtain isopropyl titanate hydrochloric acid solution; weigh 1g of diatomaceous earth and mix it into the aforementioned isopropyl titanate In the hydrochloric acid solution, fully stir and disperse evenly, and the obtained mixed solution is named mixed solution 1;

[0029] (2) Weigh 0.22g cetyltrimethylammonium bromide and dissolve it in 27.3ml deionized water to make a 0.8wt% aqueous solution, then add it dropwise to mixed solution 1 to obtain solution A; then weigh urea 1.96 g was added into solution A, stirred for 20 minutes, and the mixed solution was named as mixed solution 2, and its total volume was 40ml;

[0030] (3) Measure 120ml of ethylene glycol, mix and stir with the mixed solution 2 for 10 minutes, and the obtained mixed solution is named as the precursor solution 3;

[0031] (4) Transfer the obtained precursor solution 3 to a hydroth...

Embodiment 3

[0035] (1) Weigh 0.28g of isopropyl titanate, disperse in 13.8g of concentrated hydrochloric acid, stir and mix for 20 minutes to obtain isopropyl titanate hydrochloric acid solution; weigh 0.5g of diatomaceous earth and mix it into the aforementioned isopropyl titanate In the ester hydrochloric acid solution, fully stir and disperse evenly, and the obtained mixed solution is named mixed solution 1;

[0036] (2) Weigh 0.22g cetyltrimethylammonium bromide and dissolve it in 27.3ml deionized water to make a 0.8wt% aqueous solution, then add it dropwise to mixed solution 1 to obtain solution A; then weigh urea 1.96 g was added into solution A, stirred for 20 minutes, and the mixed solution was named as mixed solution 2, and its total volume was 40ml;

[0037] (3) Measure 120ml of ethylene glycol, mix and stir with the mixed solution 2 for 20 minutes, and the obtained mixed solution is named as the precursor solution 3;

[0038] (4) Transfer the obtained precursor solution 3 to a...

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Abstract

The invention discloses a room-temperature formaldehyde decomposing agent suitable for an air purifier. Diatomite powder particles are used as nucleuses, ultrafine TiO2 nanobelts grow on the surfaces of the nucleuses, and nano Pt particles are loaded on the TiO2 nanobelts, so as to prepare the room-temperature formaldehyde decomposing agent. The room-temperature formaldehyde decomposing agent is characterized in that the room-temperature formaldehyde decomposing agent is a composite material which is prepared by using the diatomite powder particles as carriers and loading the ultrafine TiO2 nanobelts, wherein the ultrafine TiO2 nanobelts and the nano Pt particles form Pt / TiO2 heterostructures, and the loading capacity of the nano Pt particles is 1% to 5% of the total mass of the Pt / TiO2 heterostructures. The formaldehyde decomposing agent can be used for integrating various types of formaldehyde pollution treatment, i.e. the diatomite powder particles with strong adsorbability are used as the nuclei, so as to efficiently capture formaldehyde molecules, the ultrafine TiO2 nanobelts grow on the surfaces of the nucleuses, so that the formaldehyde decomposing agent has a photocatalyst formaldehyde degradation function, and the tiny Pt particles are loaded on the TiO2 nanobelts, so that the formaldehyde molecules are catalyzed at room temperature, and the stable efficient long-term purification of indoor formaldehyde air is really realized.

Description

technical field [0001] The invention relates to an air purifier for indoor formaldehyde pollution and a preparation method thereof, in particular to a room temperature formaldehyde decomposing agent suitable for an air purifier and a preparation method thereof. Background technique [0002] Formaldehyde (chemical formula HCHO) is a colorless, water-soluble liquid with strong volatility and a pungent odor. Urea-formaldehyde resin is usually used as an adhesive in the production of various types of wood-based panels and their furniture, which is generally considered to be the largest source of indoor formaldehyde emissions. The newly decorated room has a high formaldehyde content, which is the cause of many diseases. Formaldehyde has a strong irritating effect on the mucous membranes of the eyes, nose, and throat. The most common symptoms are eye irritation and headache. In severe cases, it can cause allergic dermatitis and asthma. Because formaldehyde can react with protein...

Claims

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Application Information

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IPC IPC(8): B01D53/02B01D53/86B01D53/72
Inventor 桑元华王晓宁何淑仁谭华张小飞许效红刘宏
Owner SHANDONG UNIV
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