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Three-dimensional porous boron nitride composite material for air purification and preparation method thereof

A three-dimensional porous and composite material technology, applied in chemical instruments and methods, separation methods, physical/chemical process catalysts, etc., can solve the problems of insufficient catalyst performance, inability to fully satisfy air purification, weak chemical stability, etc., to achieve The effect of excellent regeneration and reuse ability, excellent chemical stability and wide pore size distribution

Inactive Publication Date: 2019-01-11
HUBEI UNIV OF EDUCATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Traditional catalyst support materials such as porous carbon, Al 2 o 3 , SiO 2 And zeolite, etc., have defects such as weak chemical stability, poor structural stability, and low adsorption capacity (Chemistry Letters, 1998, 6: 481-482), and cannot fully exert the effectiveness of the catalyst, so that it cannot fully meet the requirements of air purification.

Method used

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  • Three-dimensional porous boron nitride composite material for air purification and preparation method thereof
  • Three-dimensional porous boron nitride composite material for air purification and preparation method thereof
  • Three-dimensional porous boron nitride composite material for air purification and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] (1) Weigh 1 part of boric acid and 0.01 part of melamine, add boric acid and melamine to 1 part of aqueous solution, and then completely dissolve boric acid and melamine in water by stirring; (2) Add 1 part of sodium chloride into the mixed aqueous solution, stirred to dissolve sodium chloride in water, and then heated the resulting mixed solution to 70°C until the water in the mixed solution was completely evaporated to obtain a white solid; (3) the product obtained in (2) was dissolved in nitrogen Heating to 700°C under protection, keeping it warm for 0.5 hours, after the end of keeping warm, lowering the temperature to room temperature under nitrogen protection to obtain a white solid; (4) impregnating the product obtained in (3) with an initial concentration of 0.01 mol / L In sodium hydroxide solution at 1°C, keep it for 0.1 hour; (5) filter the mixed solution obtained in (4), place it in a vacuum drying oven at 5°C, and dry it for 1 hour to obtain a three-dimensional...

Embodiment 2，3

[0037] Change the consumption of step (1) melamine in Example 1 into 1 part and 100 parts respectively, and other operations are all the same as in Example 1, and the product obtained is the same as in Example 1.

Embodiment 4、5

[0039] Change the consumption of step (1) water into 500 parts, 1000 parts respectively in the embodiment 1, and other each operation is all identical with embodiment 1, obtains product with embodiment 1.

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Abstract

The invention provides a three-dimensional porous boron nitride composite material for air purification and a preparation method thereof and relates to air purification materials. The preparation method of the three-dimensional porous boron nitride composite material comprises the following steps: dissolving boric acid, melamine and metal chloride into water; heating a mixed solution until the water in the mixed solution is completely evaporated; carrying out heat treatment on an obtained solid mixture under atmosphere protection, so as to obtain a porous boron nitride material with a three-dimensional structure; impregnating three-dimensional porous boron nitride into a sodium hydroxide solution; and filtering and drying in vacuum to obtain the sodium hydroxide loaded three-dimensional porous boron nitride composite material for the air purification. According to the three-dimensional porous boron nitride composite material, the specific surface area of the obtained product reaches 750m<2> / g and the pore diameter is 1.3 to 30nm; the product has high chemical stability and structure stability and has a good removing capability on formaldehyde gas in the air. Furthermore, a preparation technology of the air purification material is simple and easy to amplify and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to an air purification material, in particular to a three-dimensional porous boron nitride composite material for air purification and a preparation method thereof. Background technique [0002] Indoor air quality directly affects people's health because people spend more than 80% of their time indoors. Volatile organic gases are one of the most serious indoor pollution components, especially formaldehyde gas. Formaldehyde gas mainly comes from building decoration materials and daily consumer products. For example, formalin, a medical preservative, is an aqueous solution of formaldehyde. Since formaldehyde can combine with the amino group of protein to coagulate protein and even cause cancer, it is extremely harmful to human health and has been identified as a highly toxic first-class carcinogen. Therefore, there is an urgent need to develop an effective and environmentally friendly method to remove formaldehyde gas from indoor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J20/02B01J20/30B01D53/86B01D53/72B01D53/02
CPCB01D53/02B01D53/8668B01D2257/70B01D2258/06B01J20/0248B01J20/0259B01J27/24
Inventor 李杰何适戴伟吴田
Owner HUBEI UNIV OF EDUCATION
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