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Preparation method of MOF (metal oxide framework)-loaded silver antibacterial scale-blocking ultrafiltration film and application thereof

A technology of ultrafiltration membrane and MOF, which is applied in the field of inorganic/organic hybrid separation, can solve problems not involved in the synthesis and application of MOF-loaded silver, and achieve good filtration and separation performance, high sterilization, and environmental friendliness

Inactive Publication Date: 2019-05-28
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned processes require the direct mixing of antibacterial materials and substrates, and do not involve the synthesis of MOF-loaded silver and its application in ultrafiltration membranes.

Method used

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  • Preparation method of MOF (metal oxide framework)-loaded silver antibacterial scale-blocking ultrafiltration film and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve or disperse PVDF with a molecular weight of 200,000 g / mol at a ratio of 100:1:3, MOF-loaded silver, and a pore-forming agent in dimethylacetamide to form a PVDF solution with a mass fraction of 20%, so that it is fully dissolved, Remove the insoluble matter by filtering and degassing, and mature in a constant temperature room at 60°C for 12 hours to obtain the casting solution; scrape the film on a clean glass plate with a scraper, and then immediately put the glass plate in deionized water for phase inversion, and the phase inversion is complete Afterwards, immerse in deionized water to remove residual solvent to obtain an ultrafiltration membrane.

[0022] Antibacterial Performance Experiment of Antibacterial Ultrafiltration Membrane

[0023] In this experiment, Staphylococcus aureus was used to test the antibacterial performance of antibacterial ultrafiltration membrane.

[0024] The medium formula used in the experiment is as follows:

[0025] LB liquid m...

Embodiment 2

[0029] 1) Preparation of antibacterial ultrafiltration membrane:

[0030] Dissolve or disperse PVDF with a molecular weight of 200,000 g / mol at a ratio of 100:2:3, MOF-loaded silver, and a pore-forming agent in dimethylacetamide to form a PVDF solution with a mass fraction of 20%, so that it is fully dissolved, Remove the insoluble matter by filtering and degassing, and mature in a constant temperature room at 60°C for 12 hours to obtain the casting solution; scrape the film on a clean glass plate with a scraper, and then immediately put the glass plate in deionized water for phase inversion, and the phase inversion is complete Afterwards, immerse in deionized water to remove residual solvent to obtain an ultrafiltration membrane.

[0031] Antibacterial performance experiment of antibacterial ultrafiltration membrane. In this experiment, Staphylococcus aureus was used to test the antibacterial performance of antibacterial ultrafiltration membrane. The medium formula used in th...

Embodiment 3

[0034] 1) Preparation of antibacterial ultrafiltration membrane:

[0035] Dissolve or disperse PSF with a molecular weight of 200,000 g / mol at a ratio of 100:2:3, MOF-loaded silver, and a pore-forming agent in dimethylacetamide to prepare a PS solution with a mass fraction of 20%, so that it is fully dissolved. Remove the insoluble matter by filtering and degassing, and mature in a constant temperature room at 60°C for 12 hours to obtain the casting solution; scrape the film on a clean glass plate with a scraper, and then immediately put the glass plate in deionized water for phase inversion, and the phase inversion is complete Afterwards, immerse in deionized water to remove residual solvent to obtain an ultrafiltration membrane.

[0036] Antibacterial performance experiment of antibacterial ultrafiltration membrane. In this experiment, Staphylococcus aureus was used to test the antibacterial performance of antibacterial ultrafiltration membrane. The medium formula used in th...

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Abstract

The invention relates to a preparation method of a MOF (metal oxide framework)-loaded silver antibacterial scale-blocking ultrafiltration film, and belongs to the technical field of inorganic / organichybrid separation. The preparation method comprises the following steps of using metal salt and ligand as raw materials, preparing MOF under the hydrothermal reaction condition, mixing the MOF and silver salt, and reducing, so as to obtain the MOF-loaded silver; mixing the MOF-loaded silver and a film material, so as to prepare a film casting liquid; preparing the film casting liquid into the MOF-loaded silver antibacterial scale-blocking ultrafiltration film by TIPS (thermally induced phase separation), NIPS (nonsolvent-induced phase separation) and VIPS (vapor-induced phase separation) methods. The preparation method has the advantages that by adopting one-pot method, the MOF-loaded silver can be obtained, the production process is simple, and the operation is easy. The MOF-loaded silverantibacterial scale-blocking ultrafiltration film has the advantages that the sterilizing property is higher, and the sterilizing rate for staphylococcus aureus is 90 to 99.8%; the filtering and separating property is good, and the rejection rate for bovine serum albumin is 99% or above; the MOF-loaded silver antibacterial scale-blocking ultrafiltration film can stably exist in air and water, andcan be recycled and regenerated; the environment-friendly effect is realized, and the corrosion property is avoided.

Description

technical field [0001] The invention belongs to the technical field of inorganic / organic hybrid separation, and in particular relates to a preparation method and application of an MOF-loaded silver antibacterial and scale-resistant ultrafiltration membrane. Background technique [0002] Silver doped ultrafiltration membranes are known as antimicrobial membranes. They can be made by various processes. CN201610839283.8 describes a method for preparing an antibacterial and anti-pollution renewable ultrafiltration membrane. The antibacterial ultrafiltration membrane is prepared by blending amphiphilic polymer A and polysulfone. The amphiphilic polymer includes hydrophilic polysulfone The ethylene glycol monomethyl ether chain and the NH bond that is easy to react with sodium hypochlorite to form an antibacterial group N-Cl bond make the above-mentioned ultrafiltration membrane have excellent bactericidal properties and good anti-pollution properties. CN105833742A describes a k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/02B01D71/00B01D61/14
Inventor 徐文涛张国亮李清彪徐泽海
Owner QUANZHOU NORMAL UNIV
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