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Graphene-based composite antibacterial material and preparation method thereof

A composite antibacterial and graphene technology, applied in botanical equipment and methods, chemicals for biological control, biocides, etc., can solve the problems of easy precipitation and easy volatilization

Inactive Publication Date: 2021-11-30
安徽新虹新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a graphene-based composite antibacterial material and preparation method thereof, the composite antibacterial material is prepared by reacting modified graphene with an antibacterial enhancer, which solves the problem that organic antibacterial agents are volatile and easy to separate out at this stage problems, and avoid the use of nano-silver materials, reducing the preparation cost of composite antibacterial materials

Method used

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  • Graphene-based composite antibacterial material and preparation method thereof
  • Graphene-based composite antibacterial material and preparation method thereof
  • Graphene-based composite antibacterial material and preparation method thereof

Examples

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Embodiment 1

[0035] A kind of composite antibacterial material based on graphene, comprises the steps:

[0036] Step S1: Disperse the modified graphene in N,N-dimethylformamide, add an antibacterial enhancer and 4-dimethylaminopyridine, and react at a speed of 200r / min and a temperature of 100°C After 5h, remove the filtrate by filtration, and dry the filter cake;

[0037] Step S2: Soak the filter cake in sodium hypochlorite solution, adjust the pH value to 7, soak for 1 hour, filter and dry to obtain a composite antibacterial material.

[0038] Modified graphene is made by the following steps:

[0039] Step A1: Add graphite, sodium nitrate, and concentrated sulfuric acid into the reaction kettle, stir for 20 minutes under the condition of rotating speed of 150r / min and temperature of 0°C, then add potassium permanganate and raise the temperature to 10°C, continue Stir for 1 hour, heat up to 35°C, keep warm for 20 minutes, add deionized water, heat up to 95°C, keep warm for 10 minutes, add...

Embodiment 2

[0046] A kind of composite antibacterial material based on graphene, comprises the steps:

[0047] Step S1: Disperse the modified graphene in N,N-dimethylformamide, add an antibacterial enhancer and 4-dimethylaminopyridine, and carry out the reaction at a speed of 200r / min and a temperature of 110°C After 6h, remove the filtrate by filtration, and dry the filter cake;

[0048] Step S2: Soak the filter cake in sodium hypochlorite solution, adjust the pH value to 7, soak for 1.3 hours, filter and dry to obtain a composite antibacterial material.

[0049] Modified graphene is made by the following steps:

[0050] Step A1: Add graphite, sodium nitrate, and concentrated sulfuric acid into the reaction kettle, stir for 25 minutes under the condition of rotating speed of 180r / min and temperature of 0°C, then add potassium permanganate and raise the temperature to 13°C, continue Stir for 1.3 hours, raise the temperature to 38°C, keep it warm for 25 minutes, add deionized water, rais...

Embodiment 3

[0057] A kind of composite antibacterial material based on graphene, comprises the steps:

[0058] Step S1: Disperse the modified graphene in N,N-dimethylformamide, add an antibacterial enhancer and 4-dimethylaminopyridine, and carry out the reaction at a speed of 300r / min and a temperature of 120°C After 8h, remove the filtrate by filtration, and dry the filter cake;

[0059] Step S2: Soak the filter cake in sodium hypochlorite solution, adjust the pH value to 7, soak for 1.5 hours, filter and dry to obtain a composite antibacterial material.

[0060] Modified graphene is made by the following steps:

[0061] Step A1: Add graphite, sodium nitrate, and concentrated sulfuric acid into the reaction kettle, stir for 30 minutes under the condition of rotating speed of 200r / min and temperature of 0°C, then add potassium permanganate and raise the temperature to 15°C, continue Stir for 1.5 hours, raise the temperature to 40°C, keep it warm for 30 minutes, add deionized water, rais...

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Abstract

The invention discloses a graphene-based composite antibacterial material and a preparation method thereof. According to the composite antibacterial material, modified graphene reacts with an antibacterial enhancer, so that the surface of the modified graphene is coated with a layer of latticed antibacterial enhancer molecules, then chlorination treatment is conducted, secondary amine on the antibacterial enhancer molecules is chlorinated, and the composite antibacterial material is prepared. The composite antibacterial material has multiple sterilization layers, can effectively destroy bacterial cell membranes, denature bacterial proteins, hinder bacterial metabolism and further kill bacteria, and the sterilization layers of the composite antibacterial material are all connected through chemical bonds, so that the antibacterial components in the composite antibacterial material are free of precipitation, volatilization and particle shedding, the service life of the composite antibacterial material is greatly prolonged, a nano-silver material is not needed, and the preparation cost of the composite antibacterial material is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of antibacterial material preparation, in particular to a graphene-based composite antibacterial material and a preparation method thereof. Background technique [0002] Antibacterial agents can be divided into organic antibacterial agents, natural antibacterial agents, and inorganic antibacterial agents according to their structures. High safety and low environmental pollution, but poor heat resistance and durability. Inorganic antibacterial agents have excellent characteristics such as high persistence, good heat resistance, less resistance to drugs, and high safety. They are widely used in biomedicine, air purification, and construction. Coatings, clothing, ceramics, sanitary kitchen utensils and other fields have broad development space and application potential; [0003] Graphene is a two-dimensional material with a single-layer sheet structure composed of carbon atoms. Its carbon atoms form a hexagona...

Claims

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Application Information

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IPC IPC(8): A01N59/00A01N43/40A01N43/16A01N25/26A01P1/00C08F220/34C08F216/14C08F218/08C08F8/00C08F8/30
Inventor 刘雪琴刘平莉
Owner 安徽新虹新材料科技有限公司
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