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A kind of organic-inorganic hybrid nano antibacterial material and its preparation method and application

A technology of nano-antibacterial materials and inorganic anti-bacterial materials, which is applied in the field of organic-inorganic hybrid nano-antibacterial materials and their preparation, can solve the problems of reduced antibacterial performance, limited processing temperature, and easy to be oxidized, and achieves improved processing temperature and good dispersibility and interface performance, cheap effect

Active Publication Date: 2020-08-21
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are many methods to prepare nano-cuprous oxide with controllable size and shape, but if the nano-cuprous oxide is directly used for processing, it is easily oxidized, resulting in a decrease in its antibacterial performance, so its processing temperature is limited

Method used

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  • A kind of organic-inorganic hybrid nano antibacterial material and its preparation method and application
  • A kind of organic-inorganic hybrid nano antibacterial material and its preparation method and application
  • A kind of organic-inorganic hybrid nano antibacterial material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0055] The preparation of organic-inorganic hybrid nano-antibacterial material, wherein cuprous oxide is an inorganic antibacterial material, and the polymerization product of polyphenolic compound (catechol) and polyamine compound (tetraethylenepentamine) is an organic antibacterial material, said The organic antibacterial material is coated with the inorganic antibacterial material.

[0056] Add 100mL of Tris-HCl solution with a pH of 8.5 into a 150mL single-mouth bottle, and then add 71.5mg of nano-cuprous oxide powder, wherein the molar concentration of the nano-cuprous oxide dispersion system is 5M, put the dispersion system in an ultrasonic wave for 30min, Nano-cuprous oxide is dispersed uniformly in this solution, add 5.5mg pyrocatechol, stir reaction 30min with the stirring speed of 400rpm, then add 9.5mg tetraethylenepentamine (the mol ratio of pyrocatechol and tetraethylenepentamine is 1:1). Continue to stir the reaction at room temperature. When reacting for 4h, 8h...

Embodiment 2

[0065] Add 100mL Tris-HCl solution with a pH of 8 into a 150mL single-mouth bottle, then add 100mg of nano-cuprous oxide powder, put the dispersion system in an ultrasonic wave for 30min, so that the nano-cuprous oxide is evenly dispersed in the alkaline buffer solution , wherein the molar concentration of nano-cuprous oxide dispersion system is 7M, add 9.5mg dopamine hydrochloride, stir and react with a stirring speed of 400rpm for 30min, add 2.6mg diethylenetriamine (the molar ratio of dopamine hydrochloride and diethylenetriamine The ratio is 2:1). React at room temperature for 6 h, centrifuge at 12,000 rpm to obtain a dark green suspension, wash with deionized water three times, and collect the sediment after freeze-drying. The thickness of the shell layer in the prepared organic-inorganic hybrid nano antibacterial material, that is, the coating layer is 20-30nm.

[0066] For the product prepared in Example 2, its normal temperature XRD spectrum and variable temperature X...

Embodiment 3

[0068] Add 125mL of Tris-HCl solution with a pH of 8.5 into a 150mL beaker, then add 178.8mg of nano-cuprous oxide powder, put the dispersion system in an ultrasonic wave for 30min, so that the nano-cuprous oxide is uniformly dispersed in the solution, and a dispersed Liquid A. 25 mL of Tris-HCl solution with a pH of 8.5 was added into a 50 mL beaker, and then 13.8 mg of catechol was added, and the reaction was stirred for 30 min to obtain solution B.

[0069] 3-1) System: Add 40mL of Tris-HCl solution with a pH of 8.5 into a 100mL beaker, then add 5mL of A dispersion and 5mL of B solution respectively, stir for 30min, add 4.7mg of tetraethylenepentamine, of which, inorganic antibacterial The molarity of the material was 1M.

[0070] 3-2) System: Add 30mL Tris-HCl solution with a pH of 8.5 into a 100mL beaker, then add 15mL of A dispersion, 5mL of B solution, stir for 30min, add 4.7mg of tetraethylenepentamine, of which, inorganic antibacterial The molarity of the material was...

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Abstract

The invention discloses an organic-inorganic hybrid antibacterial nanomaterial, and a preparation method and a use thereof. The antibacterial material is a core-shell structure, wherein the core is aninorganic antibacterial material, and the shell is an organic antibacterial material; the inorganic antibacterial material is one or more of Ag2O, TiO2, ZnO, CaO, MgO, CuO and Cu2O; the organic antibacterial material is a polymerization product of a polyphenol compound and a polyamine compound, and the polyphenol compound is one or more of dopamine, tannic acid, gallocatechin, catechin and catechol; and the polyamine compound is one or more of polyethylene polyamine compound. The organic-inorganic hybrid antibacterial nanomaterial has the advantages of excellent synergistic antibacterial property, good dispersibility, good interfacial properties, and facilitation of uniform dispersion of the material in a polymer material. The preparation method of the invention has the advantages of simplicity, greenness, environmental protection, and low price and low toxicity of cuprous oxide nanoparticles.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to an organic-inorganic hybrid nano antibacterial material and its preparation method and application. Background technique [0002] Health is one of the topics that people are most concerned about at present. Infectious diseases caused by various bacteria, fungi and viruses have seriously affected human health. More than 70% of bacterial infections require the use of one or more antibiotics to eradicate them. The use of antibiotics can make the body resistant to pathogens. Therefore, the use of antibacterial materials is becoming more and more important. Antibacterial materials are a class of functional materials that can kill harmful bacteria and inhibit the growth and reproduction of harmful bacteria. Organic antibacterial agents are poor in heat resistance and difficult to process, and cannot be mass-produced at present; in comparison, inorganic anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/22C08L25/06C08L69/00C08L23/06C08L23/12C08L55/02C08L75/04C08G73/00A01N25/28A01N59/16A01P1/00
Inventor 徐坚冉运蔡超张道海李鹏翀董海侠赵宁
Owner INST OF CHEM CHINESE ACAD OF SCI
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