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Silver nanowire composite material, and preparation method and application thereof

A technology of nano-silver wire and composite material, applied in the field of antibacterial materials, can solve the problems of larger size of silver particles and weakened sterilization and disinfection effect.

Inactive Publication Date: 2021-01-01
SHANGHAI IND TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Micron silver does not produce cytotoxicity, but the size of silver particles becomes larger and the sterilization effect is correspondingly weakened

Method used

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  • Silver nanowire composite material, and preparation method and application thereof
  • Silver nanowire composite material, and preparation method and application thereof
  • Silver nanowire composite material, and preparation method and application thereof

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preparation example Construction

[0032] In the preparation method of the nano-silver wire composite material provided by the present invention, the solvent is selected from one or more combinations of water, alcohols, ketones, ethers, lipids and other commonly used organic solvents.

[0033] Wherein, water is pure water.

[0034] Alcohols are selected from one or more combinations of methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol and the like.

[0035] The ketones are selected from one or more combinations of acetone, methyl butanone, methyl isobutyl ketone and the like.

[0036] The ethers are selected from one or more combinations of diethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, and the like.

[0037] Lipids are selected from methyl acetate, ethyl acetate, propyl acetate and other commonly used organic solvents are selected from benzene, toluene, xylene, pentane, hexane, octane, cyclohexane, cyclohexanone, toluene cyclo...

Embodiment 1

[0064] Embodiment 1 (nano-silver wire composite material 1 preparation and antibacterial effect verification)

[0065] Preparation of silver nanowires: In a 250ml flask, put 100ml of ethylene glycol and 3g of polyvinylpyrrolidone (PVP K60) with a molecular weight of about 360,000, and place it in an oil bath at 140°C with stirring to dissolve completely. After adding 1 g of silver nitrate (AgNO 3 ) to dissolve completely. Continue to add 0.0036g of KBr and 0.0129g of AgCl as nucleating agents, continue to stir for 1 hour, then set the temperature to 150°C and continue to react for 1 hour. The obtained solution was centrifuged, washed with acetone and pure water, and dried to obtain a powder. The powder was subjected to scanning electron microscopy and the results were as follows: figure 2 shown. From figure 2 It can be seen that the synthesized basically pure silver nanowires.

[0066] Weighing 6 mg of nano silver wires was put into 200 g of ozone water with an ozone c...

Embodiment 2

[0070] Embodiment 2 (nano-silver wire composite material 2 preparation and antibacterial effect verification)

[0071] Preparation of silver nanowires: In a 250ml flask, put 100ml of ethylene glycol and 3g of polyvinylpyrrolidone (PVP K60) with a molecular weight of about 360,000, and place it in an oil bath at 140°C with stirring to dissolve completely. After adding 1 g of silver nitrate (AgNO 3 ) to dissolve completely. Continue to add 0.0036g of KBr and 0.0129g of AgCl as nucleating agents, continue to stir for 1 hour, then set the temperature to 150°C and continue to react for 1 hour. The obtained solution was centrifuged, washed with acetone and pure water, and dried to obtain a powder. The powder was subjected to scanning electron microscopy and the results were as follows: figure 2 shown. From figure 2 It can be seen that the synthesized basically pure silver nanowires.

[0072] The nano-silver wire of 3mg is weighed and added into the hydrogen peroxide solution...

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Abstract

The invention belongs to the field of antibacterial materials, and particularly relates to a silver nanowire composite material, and a preparation method and application thereof. The composite material comprises a nano-silver wire, and the nano-silver wire is coated with an Ag-O nano-layer. the diameter of the silver nanowire ranges from 3 nm to 500 nm, and the length of the silver nanowire rangesfrom 1 [mu]m to 500 [mu]m; and the thickness of the Ag-O layer ranges from 1 nm to 100 nm. The composite material has the characteristics of nano-silver and the characteristic that silver ions are easy to release, and has a micron size in the length direction, so that the prepared material has efficient sterilization and disinfection effects and low toxicity.

Description

technical field [0001] The invention belongs to the field of antibacterial materials, in particular to a nano-silver wire composite material and its preparation method and application. Background technique [0002] With the development of medicine, people gradually realize that bacteria and viruses are the main factors that threaten human health, so antibiotics are invented, but at present, antibiotics have poor permeability to bacterial cells, and about 60-70% of bacterial infections cannot be effectively treated with existing antibiotics. There are also many side effects. Therefore, people's attention to non-toxic and harmless antibacterial agents is constantly increasing. Silver itself has a good antibacterial effect, especially nano-silver particles as the most common nano-material, its application value in various aspects has been widely recognized, and has been widely used in medical care, food, cosmetics, textiles And other various daily necessities and other fields...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/04A01P1/00B82Y30/00B82Y40/00
CPCA01N25/04A01N59/16B82Y30/00B82Y40/00
Inventor 李德善竹子川周伟民
Owner SHANGHAI IND TECH INST
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