Antimicrobial composite material and preparation method thereof

A technology of composite materials and graphene quantum dots, which is applied in the field of antibacterial composite materials and its preparation, can solve problems such as easy agglomeration, affecting antibacterial effect, and easy falling off, and achieve long-term antibacterial activity, good antibacterial effect, and improved stability. Effect

Inactive Publication Date: 2017-02-08
佛山市高明区尚润盈科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Subsequently, a series of graphene / silver nanocomposite antibacterial materials with good antibacterial properties appeared. Studies have found that the use of such materials has certain limitations; On the specific part of graphene, it cannot be evenly distributed on the surface, thus affecting the antibacterial effect; on the other hand, nano-silver and graphene cannot be tightly combined (especially when the content of nano-silver particles increases, it is easy to agglomerate), when using It is easy to fall off during the process, which will affect the service life and antibacterial effect

Method used

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  • Antimicrobial composite material and preparation method thereof
  • Antimicrobial composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method of antibacterial composite material, it comprises the following steps:

[0021] (1) Preparation of graphene quantum dot suspension: weigh 0.5g of C60 powder, measure 50ml of concentrated sulfuric acid with a mass fraction of 98%, mix C60 powder and concentrated sulfuric acid in a beaker, place the beaker in an ice-water bath, and simultaneously Stir at a speed of 500rpm to obtain a mixed solution; weigh 3g of potassium permanganate powder, and slowly add it to the above mixed solution; remove the ice-water bath and replace it with a water bath, keep the temperature of the water bath at 30~40°C, and react for 8 hours; quickly add 200ml of pure Water, filtered, and then dialyzed for 3 days with a dialysis bag with a molecular weight cut-off of 1000 to obtain a suspension of graphene quantum dots; the suspension of graphene quantum dots was stirred at a speed of 100 rpm, while laser irradiation was performed for 30 minutes, and the laser irradia...

Embodiment 2

[0030] A kind of preparation method of antibacterial composite material, it comprises the following steps:

[0031] (1) Preparation of graphene quantum dot suspension: Weigh 0.7g of C60 powder, measure 80ml of concentrated sulfuric acid with a mass fraction of 98%, mix C60 powder and concentrated sulfuric acid in a beaker, place the beaker in an ice-water bath, and simultaneously Stir at a speed of 500rpm to obtain a mixed solution; weigh 2g of potassium permanganate powder, and slowly add it to the above mixed solution; remove the ice-water bath and replace it with a water bath, keep the temperature of the water bath at 30-40°C, and react for 6 hours; quickly add 200ml of pure Water, filtered, and then dialyzed for 3 days with a dialysis bag with a molecular weight cut-off of 1000 to obtain a suspension of graphene quantum dots; the suspension of graphene quantum dots was stirred at a speed of 100 rpm, while laser irradiation was performed for 45 minutes, and the laser irradia...

Embodiment 3

[0040] A kind of preparation method of antibacterial composite material, it comprises the following steps:

[0041] (1) Preparation of graphene quantum dot suspension: Weigh 0.8g of C60 powder, measure 100ml of concentrated sulfuric acid with a mass fraction of 98%, mix C60 powder and concentrated sulfuric acid in a beaker, put the beaker in an ice-water bath, and simultaneously Stir at a speed of 500rpm to obtain a mixed solution; weigh 1g of potassium permanganate powder, and slowly add it to the above mixed solution; remove the ice-water bath and replace it with a water bath, keep the temperature of the water bath at 30-40°C, and react for 5 hours; quickly add 100ml of pure Water, filtered, and then dialyzed for 3 days with a dialysis bag with a molecular weight cut-off of 1000 to obtain a suspension of graphene quantum dots; the suspension of graphene quantum dots was stirred at a speed of 100 rpm, while laser irradiation was performed for 60 minutes, and the laser irradiat...

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Abstract

The invention discloses an antimicrobial composite material and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a graphene quantum dot suspension; (2) preparing zinc oxide-loaded graphene quantum dots; (3) preparing silver-loaded graphene quantum dots coated by SiO2; (4) preparing silver/titanium dioxide-loaded graphene quantum dots; (5) surface treatment; (6) preparing an antibacterial composite material. According to the method, firstly, the zinc oxide-loaded graphene quantum dots and the silver/titanium dioxide-loaded graphene quantum dots are prepared respectively and then the surface treatment is conducted. Finally, the above two types of graphene quantum dots are adhered onto the porous graphene. Therefore, silver and zinc oxide can be better loaded and fixed. The agglomeration of silver and zinc oxide is avoided, and the stability of silver and zinc oxide is improved remarkably. As a result, the antibacterial activity of silver nanoparticles and zinc oxide lasts for a longer period of time.

Description

technical field [0001] The invention relates to an antibacterial composite material and a preparation method thereof. Background technique [0002] The development and application of antibacterial materials has set up a green barrier for the protection of human health, which is of great significance for improving the living environment of human beings, reducing diseases and protecting the health of the whole people. Humans have long recognized that certain metals such as silver, copper, zinc, mercury, bismuth, and cadmium have antibacterial effects and are safe for humans and animals. Compared with organic antibacterial agents, metal antibacterial agents have the characteristics of high temperature resistance, broad-spectrum antibacterial, long-lasting, safe, and no secondary pollution, and are gradually becoming a new research hotspot in the field of antibacterial. [0003] Graphene, as an allotrope of carbon, is a single-layer two-dimensional crystal material with a honey...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N59/16A01P1/00A01P3/00
CPCA01N25/08A01N59/16
Inventor 陆庚
Owner 佛山市高明区尚润盈科技有限公司
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