Method of preparing high-efficiency photocatalytic composite material

A composite material and photocatalytic technology, which is applied in the field of preparation of high-efficiency photocatalytic composite materials, can solve the problems of no adsorption performance, no firm fixation, large pores between fibers, etc., to avoid a large number of shedding, improve mechanical properties, and improve adsorption performance effect

Active Publication Date: 2019-01-11
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Melt-blown polypropylene nonwovens are prepared from polypropylene. The fiber shape is thicker, the pores between the fibers are larger, and it lacks functional groups such as hydroxyl groups, so it does not have adsorption properties. As TiO 2 When the carrier is used, TiO cannot be firmly fixed 2 particles

Method used

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  • Method of preparing high-efficiency photocatalytic composite material
  • Method of preparing high-efficiency photocatalytic composite material
  • Method of preparing high-efficiency photocatalytic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Tryptone, yeast powder and mannitol are configured nutrient solution according to mass ratio 4.5:3:25.5; 2 ) in nano-TiO with a concentration of 1g / L 2 Immerse in the suspension for 60min.

[0030] 2. Pour 180mL of nutrient solution and soaked sample into a 500mL Erlenmeyer flask, seal and sterilize in an autoclave at 126°C and 0.15MP for 1 hour.

[0031] 3. In the biological safety cabinet, use a pipette gun to pipette 10mL of the original bacterial solution into the cooled nutrient solution. Then, the inoculated nutrient solution was placed in a shaker incubator for static culture for 4 days.

[0032] 4. Take out the cultured composite bacterial cellulose, wash it with deionized water, put it into 0.11mol / L NaOH solution, and boil it in alkali for 10 hours in a water bath at 80°C to remove residual culture medium and bacteria. After the alkali boiling is finished, the bacterial cellulose is rinsed again with deionized water until it becomes neutral, and then put...

Embodiment 2

[0035] 1. Tryptone, yeast powder and mannitol are configured nutrient solution according to mass ratio 4.5:3:25.5; 2 ) at a concentration of 2g / L nano-TiO 2 Immerse in the suspension for 30min.

[0036] 2. Pour 180mL of nutrient solution and soaked sample into a 500mL Erlenmeyer flask, seal and sterilize in an autoclave at 126°C and 0.15MP for 1 hour.

[0037] 3. In the biological safety cabinet, use a pipette gun to pipette 10mL of the original bacterial solution into the cooled nutrient solution. Then, the inoculated nutrient solution was placed in a shaker incubator for static culture for 3 days.

[0038] 4. Take out the cultured composite bacterial cellulose, wash it with deionized water, put it into 0.11mol / L NaOH solution, and boil it in alkali for 12 hours in a water bath at 80°C to remove residual culture medium and bacteria. After the alkali boiling, the bacterial cellulose was rinsed again with deionized water until it became neutral, and then put into 80° C. deioni...

Embodiment 3

[0041] 1. Tryptone, yeast powder and mannitol are configured nutrient solution according to mass ratio 4.5:3:25.5; 2 ) in nano-TiO with a concentration of 1g / L 2 Immerse in the suspension for 30min.

[0042] 2. Pour 180mL of nutrient solution and soaked sample into a 500mL Erlenmeyer flask, seal and sterilize in an autoclave at 126°C and 0.15MP for 1 hour.

[0043] 3. In the biological safety cabinet, use a pipette gun to pipette 10mL of the original bacterial solution into the cooled nutrient solution. Then, the inoculated nutrient solution was placed in a shaker incubator for static culture for 5 days.

[0044] 4. Take out the cultured composite bacterial cellulose, wash it with deionized water, put it into 0.11mol / L NaOH solution, and boil it in alkali for 8 hours in a water bath at 80°C to remove residual culture medium and bacteria. After the alkali boiling, the bacterial cellulose was rinsed again with deionized water to neutrality, and put into deionized water at 80°...

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Abstract

The invention discloses a method of preparing a high-efficiency photocatalytic composite material, belonging to the technical field of composite materials. Bacterial cellulose and melt-blown polypropylene fiber nonwoven fabric are compounded to serve as a carrier of nanometer TiO2, so that the aggregation and inactivation of nanometer TiO2 particles are prevented, and the falling of a large amountof nanometer TiO2 particles is avoided; the advantages of the bacterial cellulose, the melt-blown nonwoven fabric and the nanometer TiO2 are combined, so that the utilization rate of light is increased; and at the same time, by virtue of the action of a large amount of hydroxyl groups on the surface of BC, the adsorption performance of the material can be improved, so that the material can be applied to the field of photocatalysis very well.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a high-efficiency photocatalytic composite material. Background technique [0002] With the rapid development of the light textile industry, people's production level is increasing day by day, and the clothes are colorful. Then, a large amount of industrial dye wastewater is discharged into the nature, resulting in increasingly serious water pollution. Therefore, solving water pollution has become a major problem that people are currently facing. The current methods for treating wastewater mainly include the following, such as activated carbon adsorption, aeration-oxidation, chemical precipitation (hydroxide precipitation, ferrite precipitation), membrane separation, ion exchange, etc. However, the equipment used in the above treatment methods occupies a large area, has a long working process, and consumes a lot of energy, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38C02F1/30C02F101/30
CPCB01J31/38B01J35/004C02F1/30C02F2101/308
Inventor 胡金燕李伟刚凤权武丁胜阚清华周堂
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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