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Preparation method and application of visible light responsive organic-inorganic hybrid membrane

A technology of hybrid film and visible light, applied in chemical instruments and methods, botanical equipment and methods, catalyst activation/preparation, etc., can solve the problems of low catalytic activity and environmental protection

Active Publication Date: 2021-05-18
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of insufficient environmental protection and low catalytic activity of photocatalytic materials in the prior art

Method used

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  • Preparation method and application of visible light responsive organic-inorganic hybrid membrane
  • Preparation method and application of visible light responsive organic-inorganic hybrid membrane
  • Preparation method and application of visible light responsive organic-inorganic hybrid membrane

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preparation example Construction

[0024] As mentioned above, the first aspect of the present invention provides a method for preparing a visible light-responsive organic-inorganic hybrid film, comprising the following steps:

[0025] (1) Silver nitrate solution and polyurethane are contacted and mixed I to dissolve, and mixed solution I is obtained, and the concentration of the silver nitrate solution is 0.05-0.20mol / L;

[0026] (2) The mixed solution I is contacted with sepiolite and cerium oxide to obtain a coating solution, the sepiolite is a sepiolite powder with an average particle diameter of 1-3 μm, and the cerium oxide is an average particle diameter Cerium oxide powder of 2-5 μm;

[0027] (3) Apply the coating solution on the substrate to obtain a substrate coated with the coating solution, and after an interval of 0-3 minutes, contact the substrate coated with the coating solution with the YX solution reaction to obtain a hybrid film deposited with in-situ-generated AgX nanoparticles, wherein X is s...

Embodiment 1

[0084] A method for preparing an organic-inorganic hybrid film responsive to visible light, comprising the following steps:

[0085] (1) 65 ml of silver nitrate solution with a concentration of 0.08 mol / L was contacted with 7 g of polyurethane I, and magnetically stirred (350 rpm) for 24 hours at room temperature and protected from light, and polyurethane I was completely dissolved to obtain mixed solution I.

[0086] (2) Put the mixed liquid I in contact with 2g of sepiolite powder I first, add 10g of cerium oxide powder I after the first stirring (350rpm) for 10min, then continue the second stirring (350rpm) for 15min, and let it stand for defoaming After 3 hours, a coating solution was obtained.

[0087] (3) Coating the coating solution on a glass plate (the thickness of the coating solution is 80 μm), and immersing the glass plate coated with the coating solution in 520 mL of 0.01 mol / L potassium chloride solution within 0 minutes After 8 hours of contact reaction, a hybr...

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Abstract

The invention relates to the technical field of organic-inorganic hybrid materials, and particularly discloses a preparation method and application of a visible light responsive organic-inorganic hybrid membrane, the method comprises the following steps of: contacting and mixing a silver nitrate solution and polyurethane for dissolution, then contacting the mixed solution sequentially with sepiolite and cerium oxide to obtain a coating solution, coating a substrate with the coating solution, carrying out a contact reaction on the substrate coated with the coating solution and a YX solution to obtain a hybrid film deposited with in-situ generated AgX nanoparticles, drying the hybrid film, and illuminating the hybrid film under an ultraviolet lamp to obtain the visible light responsive organic-inorganic hybrid membrane. The prepared organic-inorganic hybrid membrane has excellent photocatalytic performance of visible light response, can be used as an efficient antibacterial material and has good antibacterial ability, the preparation method is simple, and the prepared film is stable in structure and easy to recycle.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic hybrid materials, and in particular relates to a preparation method and application of an organic-inorganic hybrid film responsive to visible light. Background technique [0002] Photocatalysis is the separation of photogenerated carriers in semiconductor materials under the condition of light of a certain wavelength, and then the photogenerated electrons and holes are combined with ions or molecules to generate oxidative or reductive active free radicals. The organic macromolecules are degraded into carbon dioxide or other small molecular organic substances and water, and the semiconductor material, that is, the photocatalyst itself, does not change during the reaction. [0003] Photocatalytic technology is a new type of efficient and clean water treatment technology. It can not only treat a variety of refractory organic pollutants, but also has good bactericidal and antibacterial activ...

Claims

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Application Information

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IPC IPC(8): B01J31/06B01J37/34B01J37/22C02F1/32A01N59/16A01P1/00A61L2/10A61L2/08C02F101/38C02F101/34
CPCB01J31/06B01J37/345B01J37/22C02F1/32A01N59/16A61L2/10A61L2/088C02F2101/40C02F2101/38C02F2101/34B01J35/59B01J35/40B01J35/39Y02W10/37
Inventor 王晓虹杨慧芝左宇璐王思甜候坤蹇建周虎
Owner HUNAN UNIV OF SCI & TECH
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