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Air cleaning material, and preparation method and application thereof

A technology of air purification materials and substrates, applied in chemical instruments and methods, separation methods, chemical/physical processes, etc., to achieve the effects of low wind resistance, low purification cost, and quick and easy regeneration

Active Publication Date: 2014-01-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a kind of filter cotton, non-woven fabric, cotton cloth, gauze and other fibers with the function of filtering particulate matter as the base material air purification material and its preparation and regeneration method. The problem to be solved is how to Permanganate is easily loaded on the air filter material with low wind resistance, so that the obtained purification material loaded with manganese oxide can continuously and rapidly degrade formaldehyde and ozone in the air at room temperature, and the preparation method of the purification material is simple , low cost, does not introduce other pollutants

Method used

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  • Air cleaning material, and preparation method and application thereof
  • Air cleaning material, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0031] Weigh 0.04 g of cetyltrimethylammonium bromide and dissolve it in 20 ml of ultrapure water, and ultrasonically dissolve until a homogeneous solution is formed. Put 0.25 g of cut filter cotton into the prepared cetyltrimethylammonium bromide solution and soak it. Weigh 0.25 g of potassium permanganate, and add potassium permanganate into the cetyltrimethylammonium bromide solution with filter cotton. Sonicate until the potassium permanganate is completely dissolved, then add 15 ml of methanol, and place the resulting solution in a water bath at 45° C. for 6 hours. Take out the filter cotton and dry it at 105° C. to obtain the filter cotton loaded with manganese oxide. At this time, manganese oxide has been coated on the surface of the substrate.

[0032] figure 1 It is the photo of the filter cotton of the present invention after it is loaded with manganese oxide. The color of the filter cotton before the load is white, and after the load ( figure 1 ) is dark, indica...

Embodiment 2

[0037] Weigh 0.04 g of cetyltrimethylammonium bromide and dissolve it in 20 ml of ultrapure water, and ultrasonically dissolve until a homogeneous solution is formed. Put 0.25 g of cut filter cotton into the prepared cetyltrimethylammonium bromide solution and soak it. Weigh 0.25 g of potassium permanganate, and add potassium permanganate into the cetyltrimethylammonium bromide solution with filter cotton. Sonicate until the potassium permanganate is completely dissolved, then add 5 ml of methanol, and place the resulting solution at room temperature to react for 10 hours. Take out the filter cotton and dry it to obtain the filter cotton loaded with manganese oxide.

[0038] figure 2 Electron micrographs before and after the filter cotton is loaded with manganese oxide, by figure 2 c It can be seen that the smooth surface of the filter cotton is tightly covered by the manganese oxides generated by the reaction. figure 2 f is a high-magnification electron microscope phot...

Embodiment 3

[0042] Weigh 0.04 g of cetyltrimethylammonium bromide and dissolve it in 20 ml of ultrapure water, and ultrasonically dissolve until a homogeneous solution is formed. Put 0.25 g of cut filter cotton into the prepared cetyltrimethylammonium bromide solution and soak it. Weigh 0.15 g of potassium permanganate, and add potassium permanganate into the cetyltrimethylammonium bromide solution with filter cotton. Sonicate until the potassium permanganate is completely dissolved, then add 15 ml of methanol, and place the resulting solution at room temperature to react for 10 hours. Take out the filter cotton and dry it to obtain the filter cotton loaded with manganese oxide.

[0043] Soak the filter cotton sample loaded with manganese oxide in a mixed solution of 5% sulfuric acid and 0.1mol / L sodium oxalate, measure the content of manganese ions in the solution with an inductively coupled plasma emission spectrometer, and calculate the concentration of the loaded filter cotton The m...

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Abstract

The invention relates to an air cleaning material, and a preparation method and an application thereof, and belongs to the technical field of chemical catalytic decomposition. The air cleaning material comprise a base material and a manganese oxide loaded on the base material; the manganese oxide is a birnessite type manganese oxide prepared by performing in-situ reduction on a permanganate and a reducing agent; and the base material is filter cotton, non-woven fabrics, cotton cloth, gauze, or fiber with particle filtering function. The preparation method comprises the following steps: step 1, dissolving a quaternary ammonium salt and the permanganate in water, adding the base material; step 2, adding the reducing agent into the solution obtained in the step 1, mixing uniformly; step 3, heating the solution obtained in the step 2 at a constant temperature; and step 4, taking out the base material and drying to obtain the finished product. According to the technical scheme, the manganese oxide is simple loaded on the fiber material base material such as filter cotton and the like, so that the obtained low-wind-resistance cleaning material is capable of continuously rapid degrading formaldehyde and ozone in the air at room temperature; and the preparation method of the air cleaning material is simple and low in cost, and no other pollutions are introduced.

Description

technical field [0001] The invention belongs to the technical field of chemical catalytic decomposition, in particular to the technical field of pollutant decomposition in ambient air. Background technique [0002] The air contains a large amount of particulate matter, such as dust, dust, smoke, mine dust, sand dust, powder, etc., and the filter fiber substrate plays an indispensable role in purifying and removing particulate matter in the air. There are also many gaseous inorganic pollutants and volatile organic pollutants in the indoor space, such as nitrogen oxides, ozone, formaldehyde, toluene, xylene, etc. Among them, formaldehyde has stimulating toxicity and is a carcinogen, which can affect human health through inhalation and skin contact. It is a common indoor air pollutant, mainly released from indoor building materials and decorations, and has the characteristics of slow release and persistent pollution. In 2002, some researchers investigated the removal effects ...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/86B01D53/66B01D53/72B01J23/34
Inventor 张彭义李金格王金龙
Owner TSINGHUA UNIV
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