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Yttrium oxide-graphene composite nanobacteriostatic material, preparation and application

A graphene composite, antibacterial material technology, applied in application, botanical equipment and methods, chemicals for biological control, etc., to achieve the effects of increased specific surface area, light-enhanced antibacterial performance, and low cost

Inactive Publication Date: 2017-08-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nanomaterials have been used as antibacterial agents to some extent, it is still necessary to continuously develop more efficient and lower-cost antibacterial agents

Method used

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  • Yttrium oxide-graphene composite nanobacteriostatic material, preparation and application
  • Yttrium oxide-graphene composite nanobacteriostatic material, preparation and application
  • Yttrium oxide-graphene composite nanobacteriostatic material, preparation and application

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preparation example Construction

[0020] The yttrium oxide-graphene composite nano antibacterial material preparation method and antibacterial technology of the present invention comprise the following steps:

[0021] (1) Weigh a certain amount of yttrium nitrate hexahydrate, polyvinylpyrrolidone and appropriate amount of graphite oxide into the water and ethanol system and stir evenly, then transfer the solution to a high-pressure reactor and react at 150~220°C;

[0022] (2) After the reaction product of step (1) is centrifuged to remove water, it is washed several times with ethanol and deionized water respectively, and the washed reaction product is dried to obtain the yttrium oxide-graphene composite nanomaterial;

[0023] (3) Take 2~5 mg of the product of step (2) in a 1~2 mL test tube, add 1~1.5 ml of absolute ethanol to sterilize for 5~20 minutes, then centrifuge to remove the alcohol, add 0.5~1.5 ml of sterilized water to fully Suspension;

[0024] (4) Weigh 20-50 g of tryptone-soy broth medium, stir ...

Embodiment 1

[0030] The preparation and application of a kind of yttrium oxide-graphene composite nano antibacterial material of the present invention, comprises the following steps successively:

[0031] (1) Weigh 2g of graphite powder and 1.5g of sodium nitrate mixture, add 35 mL of 98% concentrated sulfuric acid, and stir for 2 hours under ice bath;

[0032] (2) Under ice bath conditions, add 4g of potassium permanganate to the mixture in the above step (1) and stir evenly;

[0033] (3) Place the mixture in step (2) in a water bath at 35°C and stir for 2.5 hours;

[0034] (4) Take out the mixture in step (3) from the water bath, add 40 mL of deionized water, heat to keep boiling and keep stirring for 2.5 hours;

[0035] (5) Cool the mixture in step (4) to room temperature and add 200 mL of deionized water, then add 100 mL of hydrogen peroxide, and stir to obtain a solid-liquid mixture;

[0036] (6) Wash the solid-liquid mixture obtained in step (5) 4 times with 4% hydrochloric acid, a...

Embodiment 2

[0050] The preparation and application of a kind of yttrium oxide-graphene composite nano antibacterial material of the present invention, comprises the following steps successively:

[0051] (1) Weigh 2g of graphite powder and 1.5g of sodium nitrate mixture, add 35 mL of 98% concentrated sulfuric acid, and stir for 2 hours under ice bath;

[0052] (2) Under ice bath conditions, add 4g of potassium permanganate to the mixture in the above step (1) and stir evenly;

[0053] (3) Place the mixture in step (2) in a water bath at 35°C and stir for 2.5 hours;

[0054] (4) Take out the mixture in step (3) from the water bath, add 40 mL of deionized water, heat to keep boiling and keep stirring for 2.5 hours;

[0055] (5) Cool the mixture in step (4) to room temperature and add 200 mL of deionized water, then add 100 mL of hydrogen peroxide, and stir to obtain a solid-liquid mixture;

[0056] (6) Wash the solid-liquid mixture obtained in step (5) 4 times with 4% hydrochloric acid, a...

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Abstract

The invention relates to a yttrium oxide-graphene composite nanobacteriostatic material, preparation and an application. The preparation comprises the steps of uniformly dispersing graphene oxide powder into a yttrium oxide synthesis system, reacting in a high-pressure reactor, centrifugally separating a sediment and drying overnight to obtain a yttrium oxide-graphene compound; sterilizing the nanomaterial through absolute ethyl alcohol, centrifuging, removing a supernatant, adding water and fully mixing evenly; adding yttrium oxide-graphene compound materials of different concentrations to test tubes of escherichia coli and staphylococcus of a certain concentration, carrying out shake cultivation in the light and darkness for a certain period of time separately; and analyzing the suppression efficiency of the nanomaterial on a gram-positive bacterium and a gram-negative bacterium by using a plate count method. The yttrium oxide-graphene composite material has a good inhibition effect on the gram-negative bacterium and the gram-positive bacterium, has very high suppression efficiency on the gram-negative bacterium, is friendly to environment and does not generate the problems, such as drug resistance of bacteria.

Description

technical field [0001] The invention relates to an yttrium oxide-graphene composite nano material, which belongs to the field of antibacterial material preparation. Background technique [0002] Health has always been one of the topics that people are most concerned about. However, bacteria are ubiquitous and pervasive, and there are many harmful bacteria that cause disease. Their spread and spread seriously threaten human health. In recent years, infectious diseases caused by different pathogenic bacteria have continued to break out, and antibiotic resistance has also continued to increase. The research and development of antibacterial materials has attracted more and more attention from the scientific and industrial circles. Antibacterial materials mainly achieve the purpose of inhibiting and killing bacteria by adding antibacterial agents. In recent years, the requirements for antibacterial materials have also changed from the initial pursuit of bactericidal effect to th...

Claims

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Application Information

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IPC IPC(8): A01N59/00A01N59/16A01P1/00C02F1/50
CPCA01N59/00A01N59/16C02F1/50A01N2300/00
Inventor 张娅温芳芳王宏归周芝峰谈晶张子岚胡春
Owner YANGZHOU UNIV
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