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Magnetic composite antibacterial material and preparation method thereof

A composite antibacterial and magnetic technology, applied in the field of antibacterial materials, can solve the problems of low antibacterial activity of magnetic nanoparticles, high preparation cost, and high relative addition of graphene oxide

Active Publication Date: 2021-04-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this kind of magnetic graphene oxide nanocomposite is complicated and the preparation cost is high; moreover, due to the low antibacterial activity of magnetic nanoparticles, the antibacterial effect of the composite is still mainly derived from graphene oxide. The relative addition amount is high, therefore, its preparation cost is still high

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  • Magnetic composite antibacterial material and preparation method thereof
  • Magnetic composite antibacterial material and preparation method thereof
  • Magnetic composite antibacterial material and preparation method thereof

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preparation example Construction

[0027] The embodiment of the present invention provides a kind of preparation method of magnetic composite antibacterial material, comprises the following steps:

[0028] (1) Adding copper-zinc composite oxide and ferric oxide into N-methylpyrrolidone and ultrasonically treating it to obtain solution I; wherein, the copper-zinc composite oxide and ferric oxide are nanoparticles.

[0029] In this step, the polar solvent N-methylpyrrolidone is used to disperse the copper-zinc composite oxide and ferric oxide, which can effectively reduce the shielding effect of ferric oxide on the copper-zinc composite, and also prepare for the next step of activation . It should be noted that ultrasonic treatment in this step is beneficial to the dispersion of copper-zinc composite oxide and ferric oxide. In this step, the preparation method of the copper-zinc composite oxide nanoparticles and the iron ferric oxide nanoparticles can adopt the existing technology in this field.

[0030] (2) Ad...

Embodiment 1

[0048] The preparation method of magnetic composite antibacterial material is characterized in that, comprises the steps:

[0049] (1) Add 0.3g of copper-zinc composite oxide nanoparticles and 0.2g of ferric oxide nanoparticles to 10mL of N-methylpyrrolidone, ultrasonically treat for 1h, the ultrasonic power is 50kHz, and the ultrasonic temperature is lower than 60°C to obtain a solution I;

[0050] (2) Add 10 mL of silane coupling agent to the solution I obtained in step (1), and perform ultrasonic treatment for 2 hours, the ultrasonic power is 50 kHz, and the ultrasonic temperature is lower than 60 ° C to obtain solution II, and the solution II is centrifuged. The bottom precipitate was first washed with deionized water for 3 to 5 times, and then washed with absolute ethanol for 3 to 5 times, and dried in an oven at 55 to 65°C for 48 hours;

[0051] (3) Add 0.1 g of graphene oxide and the product obtained by drying in step (2) into 10 mL of dimethylacetamide and mix, ultras...

Embodiment 2

[0053] The preparation method of magnetic composite antibacterial material is characterized in that, comprises the steps:

[0054](1) Add 0.3g of copper-zinc composite oxide nanoparticles and 0.3g of ferric oxide nanoparticles to 10mL of N-methylpyrrolidone, sonicate for 1h, the ultrasonic power is 50kHz, and the ultrasonic temperature is lower than 60°C to obtain a solution I;

[0055] (2) Add 10mL of silane coupling agent to the solution I obtained in step (1), and ultrasonically treat it for 2 hours, the ultrasonic power is 50kHz, and the ultrasonic temperature is lower than 60°C to obtain solution II, and the solution II is centrifuged. The bottom precipitate was first washed with deionized water for 3 to 5 times, and then washed with absolute ethanol for 3 to 5 times, and dried in an oven at 55 to 65°C for 48 hours;

[0056] (3) Add 0.3g of graphene oxide and the product obtained by drying in step (2) into 10mL of dimethylacetamide and mix, ultrasonically treat for 6h, t...

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Abstract

The invention proposes a magnetic composite antibacterial material and a preparation method thereof, which belong to the technical field of antibacterial materials. The preparation process is simple, the relative amount of graphene oxide is small, the preparation cost is low, and industrial production can be realized. Moreover, it can be used in sewage or During the antibacterial treatment of wastewater, etc., it can effectively kill and remove microorganisms, has a high antibacterial rate, and can be used repeatedly. The preparation method of the magnetic composite antibacterial material comprises the following steps: adding copper-zinc composite oxide nanoparticles and iron ferric oxide nanoparticles into N-methylpyrrolidone, and ultrasonically treating to obtain solution I; Combined agent, ultrasonic treatment, to obtain solution II, centrifuge solution II, wash and dry the bottom precipitate obtained by centrifugation; add graphene oxide and the product obtained by the above drying into dimethylacetamide and mix, ultrasonic treatment, to obtain Solution III, centrifuge solution III, and wash and dry the bottom precipitate obtained by centrifugation.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, in particular to a magnetic composite antibacterial material and a preparation method thereof. Background technique [0002] With the progress of society and the development of industry, the conflict between the scarcity of water resources and the demand for water is becoming more and more obvious. The use of reclaimed water reuse system can greatly reduce the consumption of fresh water and reduce the pressure of water resource shortage. Reclaimed water is non-potable water that can be used within a certain range after urban domestic sewage or industrial wastewater has been deeply purified and treated to meet national standards. In order to make reclaimed water meet the quality standard of reused water, it is usually necessary to control the growth and reproduction of microorganisms in the water. [0003] Research in recent years has found that graphene oxide materials have excel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/20A01N59/16A01N59/00A01N25/22A01P1/00C02F1/50
CPCA01N25/22A01N59/00A01N59/16A01N59/20C02F1/50
Inventor 刘芳孙俊芝姜国飞赵朝成王永强崔荣丽李炜张周
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)