Yttrium Oxide-Straw Cellulose Composite Nano Antibacterial Material

A technology of straw cellulose and antibacterial materials, which is applied in the fields of chemicals for biological control, sterilization/microdynamic water/sewage treatment, botanical equipment and methods, etc., can solve the problems of bacterial drug resistance, etc. Excellent antibacterial properties, high potential industrial application value, low cost effect

Active Publication Date: 2019-10-11
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abuse of antibiotics has led to the increasingly serious problem of bacterial resistance, threatening human health and the development of the environment.

Method used

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  • Yttrium Oxide-Straw Cellulose Composite Nano Antibacterial Material
  • Yttrium Oxide-Straw Cellulose Composite Nano Antibacterial Material
  • Yttrium Oxide-Straw Cellulose Composite Nano Antibacterial Material

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Embodiment 1

[0036] The preparation and application of a novel yttrium oxide-stalk cellulose composite nano antibacterial material of the present invention comprises the following steps in turn:

[0037] (1) Weigh 10 g of straw slurry and suspend it with 1 L of aqueous solution containing 0.16 TEMPO and 1 g of NaBr;

[0038] (2) Utilize 0.1mol / L HCl to adjust the pH of the 5wt% NaClO solution to 10;

[0039] (3) Add the product of step (2) to the product of step (1) according to the ratio of 2.5mmol NaClO:1g straw slurry, and stir vigorously for 2 hours, during which the pH of the solution is adjusted with 0.5mol / L NaOH to keep the pH = 10;

[0040] (4) After the stirring is completed, fully wash with deionized water, then filter, after the stirring is completed, fully wash with deionized water, then filter, and then place it in an oven to dry, thereby obtaining straw cellulose;

[0041] (5) Weigh 1.552g of yttrium nitrate hexahydrate, 0.5g of polyvinylpyrrolidone and 10mg of the product...

Embodiment 2

[0052] The preparation and application of a novel yttrium oxide-stalk cellulose composite nano antibacterial material of the present invention comprises the following steps in turn:

[0053] (1) Weigh 10 g of straw slurry and suspend it with 1 L of aqueous solution containing 0.16 TEMPO and 1 g of NaBr;

[0054] (2) Utilize 0.1mol / L HCl to adjust the pH of the 5wt% NaClO solution to 10;

[0055] (3) Add the product of step (2) to the product of step (1) according to the ratio of 2.5mmol NaClO:1g straw slurry, and stir vigorously for 2 hours, during which the pH of the solution is adjusted with 0.5mol / L NaOH to keep the pH = 10;

[0056] (4) After the stirring is completed, fully wash with deionized water, then filter, after the stirring is completed, fully wash with deionized water, then filter, and then place it in an oven to dry, thereby obtaining straw cellulose;

[0057] (5) Weigh 1.552g of yttrium nitrate hexahydrate, 0.5g of polyvinylpyrrolidone and 10mg of the product...

Embodiment 3

[0068] The preparation and application of a novel yttrium oxide-stalk cellulose composite nano antibacterial material of the present invention comprises the following steps in turn:

[0069] (1) Weigh 10 g of straw slurry and suspend it with 1 L of aqueous solution containing 0.16 TEMPO and 1 g of NaBr;

[0070] (2) Utilize 0.1mol / L HCl to adjust the pH of the 5wt% NaClO solution to 10;

[0071] (3) Add the product of step (2) to the product of step (1) according to the ratio of 2.5mmol NaClO:1g straw slurry, and stir vigorously for 2 hours, during which the pH of the solution is adjusted with 0.5mol / L NaOH to keep the pH = 10;

[0072] (4) After the stirring is completed, fully wash with deionized water, then filter, after the stirring is completed, fully wash with deionized water, then filter, and then place it in an oven to dry, thereby obtaining straw cellulose;

[0073] (5) Weigh 1.552g of yttrium nitrate hexahydrate, 0.5g of polyvinylpyrrolidone and 10mg of the product...

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Abstract

The invention relates to an yttrium oxide-stalk cellulose composite nano antibacterial material. The method includes the following steps: uniformly dispersing the extracted straw cellulose into the yttrium oxide synthesis system, reacting in a high-pressure reactor, centrifuging and separating the precipitate and drying it overnight to obtain the yttrium oxide-straw cellulose compound. After the nanomaterials are sterilized by absolute ethanol, centrifuge to remove the supernatant, then add water and mix well. Add yttrium oxide-straw cellulose composite materials with different concentrations into the test tubes of Escherichia coli and Staphylococcus at a certain concentration, and place them under light and dark for a certain period of shaking culture; then use the plate counting method to analyze the effect of nanomaterials on leather. Inhibition efficiency of gram-negative and gram-positive bacteria. The yttrium oxide-straw cellulose composite material has a good inhibitory effect on Gram-negative and positive bacteria, especially very high inhibitory efficiency on Gram-negative bacteria, and is environmentally friendly without causing problems such as bacterial drug resistance.

Description

technical field [0001] The invention belongs to the technical field of preparation of antibacterial materials, and in particular relates to a composite nanometer antibacterial material of yttrium oxide-straw cellulose. Background technique [0002] Bacteria widely exist in the human living environment. Antibiotics can not only kill bacteria but also have a good inhibitory and killing effect on pathogenic microorganisms, so they are widely used. The abuse of antibiotics has led to the increasingly serious problem of bacterial resistance, threatening human health and the development of the environment. Finding alternatives to antibiotics has become one of the urgent problems to be solved. Studies have shown that antibacterial agents can effectively control infectious diseases caused by pathogenic bacteria. And some nanomaterials have very good bactericidal and antibacterial properties, which can not only avoid causing bacterial drug resistance, but also have low cost. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N25/10A01P1/00C02F1/50
Inventor 王宏归周芝峰温芳芳谈晶张娅张子岚胡春
Owner YANGZHOU UNIV
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