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Method for preparing molecular self-assembly porous vermiculite air purification material

An air purification material and self-assembly technology, applied in separation methods, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of poor adsorption of photocatalysts and low reaction efficiency, achieve good air purification effects, improve photocatalytic efficiency, The effect of high adsorption and stability

Inactive Publication Date: 2009-08-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the concentration of indoor air pollutants is generally very low, the commonly used photocatalyst itself has poor adsorption, and the reaction efficiency is not high when dealing with low-concentration substances.

Method used

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  • Method for preparing molecular self-assembly porous vermiculite air purification material
  • Method for preparing molecular self-assembly porous vermiculite air purification material
  • Method for preparing molecular self-assembly porous vermiculite air purification material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A kind of preparation method of molecular self-assembled porous vermiculite air purification material of the present invention comprises:

[0025] (1) Wash the dodecyltrimethylammonium ion-modified vermiculite with 0.05mol / l acid, 0.1mol / l alkali, isopentyl glycol, and finally wash with deionized water and dry at 110°C 2 hours;

[0026] (2) Then the dodecyltrimethylammonium ion-modified vermiculite is immersed in the polyoxyethylene ether chain three-head quaternary ammonium salt surfactant solution with a concentration of 0.01mol / l. A layer of organic monomolecular film was assembled on the surface of methylammonium ion-modified vermiculite, and then taken out, the surface physical adsorption components were washed away, and vacuum-dried at 50°C for 3 hours;

[0027] (3) Immerse in the nano titanium dioxide hydrosol that concentration is 0.15mol / l, take the SnCl of 6ml 2 The solution was injected into the titanium hydrosol, and then a certain amount of 1.5PdCl was ta...

Embodiment 2

[0032] A kind of preparation method of molecular self-assembled porous vermiculite air purification material of the present invention comprises:

[0033] (1) Wash the alkali-modified vermiculite with 0.1mol / l acid, 0.3mol / l alkali, wash with isopropanol, and finally wash with deionized water, and dry at 130°C for 3 hours;

[0034] (2) Then the alkali-modified vermiculite is immersed in the carboxylated polyether organic silicon surfactant solution with a concentration of 0.1mol / l, and it is taken out after one deck organic monomolecular film is assembled on the surface of the alkali-modified vermiculite, washed Remove surface physical adsorption components, vacuum dry at 70°C for 4 hours;

[0035] (3) Immerse in the nano tungsten oxide sol with a concentration of 0.35mol / l, take 10ml of SnCl 2 The solution was injected into the nano-tungsten oxide sol, and then a certain amount of 3.5PdCl was taken with a pipette 2 The solution was slowly dropped into the nano tungsten oxide...

Embodiment 3

[0040] A kind of preparation method of molecular self-assembled porous vermiculite air purification material of the present invention comprises:

[0041] (1) Wash the natural vermiculite successively with 0.07mol / l acid, 0.2mol / l alkali, wash with isobutanol, and finally wash with deionized water, and dry at 120°C for 2.5 hours;

[0042] (2) Then immerse the natural vermiculite into the JF-008 cationic fluorosurfactant solution with a concentration of 0.05mol / l, take it out after assembling a layer of organic monomolecular film on the surface of the natural vermiculite, and wash away the physical adsorption components on the surface , vacuum dried at 65°C for 3.5 hours;

[0043] (3) Immerse in the nanometer zinc oxide sol that concentration is 0.2mol / l, take the SnCl of 8ml 2 The solution was injected into the nano-zinc oxide sol, and then a certain amount of 2PdCl was taken with a pipette 2 The solution was slowly dropped into the nano-zinc oxide sol, allowed to stand for 1...

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Abstract

The invention relates to a method for preparing a molecular self-assembly porous vermiculite air purifying material. The method comprises that: (1) vermiculite is subjected to acid cleaning, alkali cleaning and alcohol cleaning sequentially; and finally, the vermiculite is washed by deionized water and dried; (2) the vermiculite is soaked in a 0.01 to 0.1mol / l surfactant solution; after the surface of the vermiculite is assembled with a layer of organic unimolecule film, the vermiculite is taken out; a surface physical adsorption composition is washed out; and the vermiculite is dried in vacuum; (3) the vermiculite is soaked in 0.15 to 0.35 mol / L sol; an SnCl2 solution is taken out and injected to the sol; PdCl2 is taken out and dripped to the sol; the mixture is kept stand, stirred and separated; a loose layer is washed out; and the mixture is dried; and (4) the step (2) and the step (3) are repeated for three to four times; and the mixture is calcined to obtain the molecular self-assembly porous vermiculite air purifying material. The preparation method is simple, easy to operate and suitable for industrial scale production; and the prepared air purifying material has good air purifying effect.

Description

technical field [0001] The invention belongs to the field of preparation of air self-purifying materials, in particular to a preparation method of molecular self-assembled porous vermiculite air purification materials. Background technique [0002] In recent years, with indoor closed decoration and indoor air pollution brought by decoration materials, which seriously endanger human health, it has aroused great concern from all walks of life. According to the World Health Organization survey, more than 300 kinds of pollutants can be detected indoors, and the level of air pollution in indoor environments is generally much higher than that in outdoor environments, usually 2-5 times, and in extreme cases, it can exceed 100 times. And people spend 90% of their time indoors, especially infants and underage children. They breathe more air than adults in terms of respiratory volume / weight ratio, so they are more likely to contact and inhale more indoor pollutants. There are various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86A61L9/014B01J29/06B01J37/02B01J32/00B01J20/16
Inventor 何瑾馨刘保江程绪帮刘路高品
Owner DONGHUA UNIV
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