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Preparation method of antibacterial and antiviral nano water-based slurry

A water-based slurry, anti-virus technology, applied in the fields of botanical equipment and methods, nanotechnology, nanotechnology, etc.

Pending Publication Date: 2020-10-20
宿迁空天新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few relevant reports at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing an antibacterial and antiviral nanocomposite powder aqueous slurry, characterized in that it comprises the following sequential steps:

[0021] (1) Take 0.1mol / L ZnSO 4 aqueous solution and 0.3mol / L NaOH aqueous solution with 50ml each, under the condition of magnetic stirring at 60°C, ZnSO 4 The solution was added dropwise to the NaOH solution. After the dropwise addition, the pH value of the solution was 11, and the water bath was kept warm for 2 hours; after the reaction was completed, the solid was separated by filtration and dried at 60°C to obtain a columnar nano ZnO powder. The average diameter of the prepared ZnO nanoparticles is 20nm-100nm;

[0022] (2) With 1%wt titanate coupling agent YY-2, 0.5%wt coconut oil monoethanolamide sulfosuccinic monoester disodium surfactant, 0.3%wt polyethylene glycol dispersant , mixed with 50%wt polyacrylic acid to form a mixed dispersion;

[0023] (3) Add GO aqueous solution and columnar nano-ZnO to Cu...

Embodiment 2

[0033] (1) Configure blank liquid medium: 0.5g of peptone, 0.25g of yeast extract, 0.25g of sodium chloride in 50ml of water and mix well), sterilize it at 121°C for a certain period of time, and cool to 60°C Afterwards, 20ul of Escherichia coli was added to the liquid medium and cultivated for 24h.

[0034] (2) Prepare sample medium: Add 2mg of nanocomposite powder aqueous slurry to 50ml of medium to prepare sample medium, sterilize at high temperature, and after cooling, take (1) 20ul of medium and transfer it to the next day’s sample culture medium for 24 hours.

[0035] (3) The prepared sample culture medium, physiological saline, petri dish, pipette tip, and LEP small tube are subjected to high-temperature sterilization together. After reaching 70°C, the sample culture medium was taken out and poured into a petri dish.

[0036] (4) Dilute the cultured sample culture medium and blank culture medium in a gradient manner, take 900ul of normal saline in 6 LEP small tubes, use...

Embodiment 3

[0042] Weigh 2 g of the nanocomposite powder water-based slurry in Example 1 into a sterile bottle, add 0.2 ml of parainfluenza virus liquid (1:1280) and mix at room temperature for 1 hour, shake for 4 minutes every 20 minutes, operate 3 times in total, add 4ml Bacterial saline, and immediately mix and shake for 4min. Aspirate the virus liquid for hemagglutination test, the measured virus hemagglutination titer is 1:30, and the virus adsorption and inactivation rate of the material is 100%.

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Abstract

The invention provides a preparation method of antibacterial and antiviral nano water-based slurry. The preparation method comprises the following steps: dropwise adding an inorganic zinc salt solution into a sodium hydroxide solution, controlling the temperature and pH value to prepare columnar nano ZnO powder; then, mixing columnar nano ZnO powder, a Cu2SO4 water solution, and a certain amount of NaOH, CTAB, a GO water solution and hydrazine hydrate, carrying out an ultrasonic reaction to prepare Cu2O-ZnO-GO nano composite powder, finally adding the Cu2O-ZnO-GO nano composite powder into a mixed dispersion liquid, and stirring to obtain the antibacterial and antiviral nano water-based slurry. The slurry is characterized in that columnar nano ZnO and Cu2O simulate a dragonfly wing nano bulge structure; and ZnO and Cu2O are uniformly loaded by virtue of the large surface area of GO. The formed nano composite powder can effectively inactivate bacteria such as escherichia coli, staphylococcus aureus and streptococcus pneumoniae and non-enveloped viruses such as influenza viruses and SARS, and has a wide application prospect in the fields of coatings, paints, implants, household appliances and the like.

Description

technical field [0001] The invention relates to a method for preparing an aqueous slurry of antibacterial and antiviral nanomaterials, in particular to a method for preparing an aqueous slurry of columnar nano-copper, nano-zinc material, and two-dimensional planar graphene oxide nanocomposite powder. [0002] technical background [0003] Antibacterial nanomaterials have always been the research object of research institutions and scholars at home and abroad, and antibacterial materials are divided into metal type, photocatalytic type, inorganic nano antibacterial materials modified by quaternary ammonium salts, and composite nano antibacterial materials. Ag in metallic materials + It is widely used because of its spectral antibacterial properties and non-toxicity to eukaryotic cells; photocatalytic materials are based on Ti 2 Represented by O, it can not only affect bacterial reproduction, but also attack the outer layer of bacterial cells, penetrate the cell membrane, comp...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N59/16A01N25/04A01P1/00B82Y30/00B82Y40/00
CPCA01N25/04A01N59/16A01N59/20B82Y30/00B82Y40/00
Inventor 陈照峰李曼娜
Owner 宿迁空天新材料有限公司
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