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Antibacterial ultrafiltration membrane

A technology of ultrafiltration membrane and polyethersulfone ultrafiltration membrane, which is applied in the field of ultrafiltration membrane, can solve the problems of poor antibacterial properties of ultrafiltration membranes, and achieve the effect of improving antibacterial activity, high antibacterial performance, and improving antibacterial active sites

Inactive Publication Date: 2021-07-30
沂水鸿羽环境科技中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing ultrafiltration membranes still have technical problems such as poor antibacterial properties.

Method used

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  • Antibacterial ultrafiltration membrane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Weigh 0.5mmol of sodium molybdate and 0.5mmol of thiourea, 0.025mmol of cerium nitrate, and 0.1mmol of diethylenetriamine and dissolve them in 80ml of glycerol / deionized aqueous solution with a volume ratio of 3:1 , stirred for 40 min, and transferred to a polytetrafluoroethylene high-temperature reaction hydrothermal kettle, and subjected to microwave hydrothermal reaction at 180 °C and 80 W for 0.5 h to prepare Ce-doped MoS 2 Honeycomb porous ball;

[0018] (2) MoS doped with Ce 2 Honeycomb porous spheres were evenly mixed with N,N-dimethylacetamide and polyethersulfone, and then scraped onto a glass plate, using deionized water as a gel bath, and prepared by immersion precipitation phase inversion method to obtain Ce-doped MoS 2 Honeycomb porous ball modified polyethersulfone ultrafiltration membrane.

Embodiment 2

[0020] (1) Weigh 0.5mmol of sodium molybdate and 0.5mmol of thiourea, 0.03mmol of cerium nitrate, and 0.15mmol of diethylenetriamine and dissolve them in 80ml of glycerol / deionized aqueous solution with a volume ratio of 3:1 , stirred for 40 min, and transferred to a polytetrafluoroethylene high-temperature reaction hydrothermal kettle, and subjected to microwave hydrothermal reaction at 200 °C and 80 W for 0.5 h to prepare Ce-doped MoS 2 Honeycomb porous ball;

[0021] (2) MoS doped with Ce 2 Honeycomb porous spheres were evenly mixed with N,N-dimethylacetamide and polyethersulfone, and then scraped onto a glass plate, using deionized water as a gel bath, and prepared by immersion precipitation phase inversion method to obtain Ce-doped MoS 2 Honeycomb porous ball modified polyethersulfone ultrafiltration membrane.

Embodiment 3

[0023] (1) Weigh 0.5mmol of sodium molybdate and 0.5mmol of thiourea, 0.03mmol of cerium nitrate, and 0.15mmol of diethylenetriamine and dissolve them in 80ml of glycerol / deionized aqueous solution with a volume ratio of 3:1 , stirred for 40 min, and transferred to a polytetrafluoroethylene high-temperature reaction hydrothermal kettle, and subjected to microwave hydrothermal reaction at 290 °C and 85 W for 1 h to prepare Ce-doped MoS 2 Honeycomb porous ball;

[0024] (2) MoS doped with Ce 2 Honeycomb porous spheres were evenly mixed with N,N-dimethylacetamide and polyethersulfone, and then scraped onto a glass plate, using deionized water as a gel bath, and prepared by immersion precipitation phase inversion method to obtain Ce-doped MoS 2 Honeycomb porous ball modified polyethersulfone ultrafiltration membrane.

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Abstract

The invention discloses an antibacterial ultrafiltration membrane. A polyethersulfone membrane is modified by adopting Ce-doped MoS2 as an antibacterial agent. A preparation process of the antibacterial ultrafiltration membrane specifically comprises the following steps: (1) weighing sodium molybdate, thiourea, cerous nitrate and diethylenetriamine, dissolving the weighed materials into a glycerol / deionized water solution, uniformly stirring, transferring the mixture into a polytetrafluoroethylene high-temperature reaction hydrothermal kettle, and carrying out a microwave hydrothermal reaction to prepare Ce-doped MoS2 honeycomb-shaped porous balls; and (2) uniformly mixing the Ce-doped MoS2 honeycomb-shaped porous balls with N, N-dimethylacetamide and polyether sulfone, coating the mixture on a glass plate in a blade coating manner, and preparing the Ce-doped MoS2 honeycomb-shaped porous ball modified polyethersulfone ultrafiltration membrane by adopting an immersion precipitation phase inversion method. The preparation process is simple, the cost is low, the antibacterial property is high, and the industrial use value is high.

Description

technical field [0001] The invention belongs to the field of ultrafiltration membrane technology, in particular to a Ce-doped MoS 2 Honeycomb porous balls as antimicrobial agent modified polyethersulfone ultrafiltration membrane. Background technique [0002] In recent years, the problem of water pollution has become more and more serious. Simple physical treatment cannot efficiently absorb various impurities in wastewater, and the treatment effect is not satisfactory. Complex chemical treatment is easy to introduce new ions and cause secondary pollution of the water environment. . In recent years, membrane separation technology has been widely used in the field of water treatment. It has the advantages of green, high efficiency, energy saving and convenient operation. It can not only filter impurities, but also avoid secondary chemical pollution. However, microorganisms such as bacteria in wastewater are easy to breed on the surface of the ultrafiltration membrane, thereb...

Claims

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Application Information

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IPC IPC(8): B01D61/14B01D71/68B01D67/00C02F1/44
CPCB01D61/145B01D67/0079B01D71/68B01D2325/48C02F1/444
Inventor 李伟
Owner 沂水鸿羽环境科技中心