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Graphene oxide/hydrotalcite composite antibacterial film material and preparation and application of graphene oxide/hydrotalcite composite antibacterial film material

A thin film material and composite antibacterial technology, applied in the field of antibacterial, can solve the problems of poor film formation and difficulty in preparing antibacterial coatings, and achieve the effect of ordered structure

Inactive Publication Date: 2014-03-26
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a nano-inorganic powder material, its film-forming property is poor, and it is difficult to prepare antibacterial coatings.

Method used

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  • Graphene oxide/hydrotalcite composite antibacterial film material and preparation and application of graphene oxide/hydrotalcite composite antibacterial film material
  • Graphene oxide/hydrotalcite composite antibacterial film material and preparation and application of graphene oxide/hydrotalcite composite antibacterial film material
  • Graphene oxide/hydrotalcite composite antibacterial film material and preparation and application of graphene oxide/hydrotalcite composite antibacterial film material

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preparation example Construction

[0018] Preparation of graphene oxide solution: 1g natural graphite, 1g NaNO 3 Mix it with 50 mL of concentrated sulfuric acid and put it into a 250mL beaker, stir it magnetically for 4 hours in an ice bath at 0°C, then slowly add 6g of KMnO 4 Finally, remove the ice bath, stir at about 35°C for 2h under natural conditions, slowly add 90mL of water and stir for 15min in a water bath at 98°C, then add 200mL of warm water and 20mL of H 2 o 2 , transfer the liquid to a centrifuge tube, wash with HCl and water, and dry at 50°C for 48 h to obtain graphite oxide.

[0019] Weigh 0.2 g of graphite oxide and disperse it in a beaker with 100 mL of water, and ultrasonically peel off the graphite oxide to prepare a graphene oxide solution with a concentration of 2 mg / mL. This solution can be used as the original graphene oxide solution for subsequent experiments.

[0020] Preparation of penicillin anion intercalation hydrotalcite colloidal solution: the experimental water is just boiled...

Embodiment 1

[0030] 1. Preparation of graphene oxide / hydrotalcite antibacterial nanocomposite film material

[0031] 1.1 Synthesis of graphene oxide solution

[0032] 1g of natural graphite, 1g of NaNO 3 Mix it with 50 mL of concentrated sulfuric acid and put it into a 250mL beaker, stir it magnetically for 4 hours in an ice bath at 0°C, then slowly add 6g of KMnO 4 Finally, remove the ice bath, stir at about 35°C for 2h under natural conditions, slowly add 90mL of water and stir for 15min in a water bath at 98°C, then add 200mL of warm water and 20mL of H 2 o 2, transfer the liquid to a centrifuge tube and wash with HCl and water centrifugally, and dry at 50°C for 48h to obtain graphite oxide. Weigh 0.2 g of graphite oxide and disperse it in a beaker with 100 mL of water, and ultrasonically peel off the graphite oxide to prepare a graphene oxide solution with a concentration of 2 mg / mL. This solution can be used as the original graphene oxide solution for subsequent experiments.

[0...

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Abstract

The invention relates to an antibacterial technology and in particular relates to a graphene oxide / hydrotalcite composite antibacterial film material and preparation and application of the graphene oxide / hydrotalcite composite antibacterial film material. The preparation method comprises the following steps: casting a mixed solution of a graphene oxide solution and penicillin anion intercalation hydrotalcite colloidal solution which is taken as raw materials according to a mass ratio of 1-4:1 to obtain the graphene oxide / hydrotalcite composite antibacterial film material. The obtained graphene oxide / hydrotalcite-based functional nano composite film material has an ordered structure and has slow-release properties and an antibacterial function.

Description

technical field [0001] The invention relates to antibacterial technology, in particular to a graphene oxide / hydrotalcite composite antibacterial film material and its preparation and application. Background technique [0002] There are a large number of microorganisms invisible to the naked eye in the human living environment, which cover the surface of materials, which is called microbial fouling. This covering is called a biofilm. Microbial fouling can lead to corruption, deterioration, mildew, wound infection and suppuration of objects, which can bring fatal diseases to human beings and cause great harm to society. [0003] Nanocomposites are widely used in medical, national defense, transportation and many other fields due to their excellent comprehensive properties, especially their functional designability. It is also widely used in the field of antibacterial coatings. The nanocomposite film with good antibacterial performance can be coated on the surface of the obj...

Claims

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Application Information

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IPC IPC(8): A01N59/00A01N43/90A01P1/00C09D5/14
Inventor 王毅张盾
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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