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Graphene oxide loaded nanometer zinc oxide antibacterial agent, preparation method and applications thereof

A nano-zinc oxide and graphene technology, applied in the directions of botanical equipment and methods, applications, biocides, etc., can solve the problems of inhibiting cell growth, disorder of bacterial cell wall cell membrane, etc., and achieve good stability and biocompatibility. simple craftsmanship

Active Publication Date: 2013-09-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is also possible that the penetration of ZnO nanoparticles into bacterial cells leads to the disorder of bacterial cell walls and cell membranes, thereby inhibiting cell growth.

Method used

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  • Graphene oxide loaded nanometer zinc oxide antibacterial agent, preparation method and applications thereof
  • Graphene oxide loaded nanometer zinc oxide antibacterial agent, preparation method and applications thereof
  • Graphene oxide loaded nanometer zinc oxide antibacterial agent, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Prepare graphene oxide according to Hummer method, concrete steps are as follows:

[0049] The graphene oxide is prepared by the Hummer method, and the preparation steps are as follows: Add graphite powder and anhydrous sodium nitrate to concentrated sulfuric acid placed in an ice bath, add potassium permanganate under vigorous stirring, and use a volume fraction of 3% hydrogen peroxide to reduce the remaining potassium permanganate and MnO 2 , making it into colorless and soluble MnSO 4 , the suspension turned bright yellow, filtered and washed twice to obtain graphene oxide. Among them, the mass ratio of graphite powder, anhydrous sodium nitrate and potassium permanganate is 1:1:5. The volume ratio of the amount of hydrogen peroxide to the reaction system after adding hydrogen peroxide is 9:26.

[0050] Prepare graphene oxide-supported nano zinc oxide antibacterial agent according to the following steps:

[0051] 1. Dissolve surfactant P123 and graphene oxide (GO)...

Embodiment 2

[0060] Prepare graphene oxide according to Hummer method, concrete steps are as follows:

[0061] The graphene oxide is prepared by the Hummer method, and the preparation steps are as follows: Add graphite powder and anhydrous sodium nitrate to concentrated sulfuric acid placed in an ice bath, add potassium permanganate under vigorous stirring, and use a volume fraction of 3% hydrogen peroxide to reduce the remaining potassium permanganate and MnO 2 , making it into colorless and soluble MnSO 4 , the suspension turned bright yellow, filtered and washed 5 times to obtain graphene oxide. Among them, the mass ratio of graphite powder, anhydrous sodium nitrate and potassium permanganate is 1:1:5. The volume ratio of the amount of hydrogen peroxide to the reaction system after adding hydrogen peroxide is 6:20.

[0062] Prepare graphene oxide-supported nano zinc oxide antibacterial agent according to the following steps:

[0063] 1. Dissolve surfactant P123 and graphene oxide (G...

Embodiment 3

[0072] Prepare graphene oxide according to Hummer method, concrete steps are as follows:

[0073] The graphene oxide is prepared by the Hummer method, and the preparation steps are as follows: Add graphite powder and anhydrous sodium nitrate to concentrated sulfuric acid placed in an ice bath, add potassium permanganate under vigorous stirring, and use a volume fraction of 3% hydrogen peroxide to reduce the remaining potassium permanganate and MnO 2 , making it into colorless and soluble MnSO 4 , the suspension turned bright yellow, filtered and washed 6 times to obtain graphene oxide. Among them, the mass ratio of graphite powder, anhydrous sodium nitrate and potassium permanganate is 3:2:8. The volume ratio of the amount of hydrogen peroxide to the reaction system after adding hydrogen peroxide is 9:26.

[0074] Prepare graphene oxide-supported nano zinc oxide antibacterial agent according to the following steps:

[0075] 1. Dissolve surfactant P123 and graphene oxide (G...

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Abstract

The invention belongs to the field of inorganic antibacterial materials, and discloses a graphene oxide loaded nanometer zinc oxide antibacterial agent, a preparation method and applications thereof. The preparation method comprises the following steps: dissolving a surfactant P123 and graphene oxide in distilled water, adding a NaOH solution, adding solid zinc nitrate, and stirring until the solid is dissolved; carrying out a reaction for 16-18 h at a temperature of 60-85 DEG C under stirring, carrying out centrifugation washing on the obtained reaction solution with distilled water, and collecting precipitate; and dissolving the precipitate in distilled water to obtain a liquid antibacterial agent, or carrying out vacuum drying on the precipitate for 36-48 h at a temperature of 40-75 DEG C to obtain a solid antibacterial agent. According to the present invention, a suitable dispersant is selected to uniformly disperse the nanometer zinc oxide particles on the surface of the graphene oxide, such that the product has good stability; and the graphene oxide loaded nanometer zinc oxide antibacterial agent belongs to a water-soluble inorganic antibacterial agent, such that practical application is convenient, the use process is simple, and characteristics of good stability, good biocompatibility, and good antibacterial property are provided.

Description

technical field [0001] The invention belongs to the field of inorganic antibacterial materials, in particular to a graphene oxide-supported nano-zinc oxide antibacterial agent and its preparation method and application. Background technique [0002] Due to the increasing number of strains resistant to important antibiotics, it has constituted a potentially huge threat to public health. Drug-resistant strains are gradually increasing in pathogenic bacteria, opportunistic pathogens and common flora, which will undoubtedly limit the use of commonly used antibiotics to a certain extent. The development of new antibacterial agents is imminent. Cost-effective antimicrobials to reduce and control the spread of pathogens. Since most biochemical processes are carried out at the nanoscale, the combination of nanotechnology and biology may help to solve important biomedical problems, such as bacterial drug resistance. [0003] Among nanomaterials with antibacterial potential, metal n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/08A01P1/00
Inventor 熊开容梁业如欧阳毅靳笑菲吴丁财符若文
Owner SUN YAT SEN UNIV
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