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MOFs-loaded nano silver antibacterial material and preparation method thereof

A nano-silver antibacterial and nano-silver technology, which is applied in botanical equipment and methods, chemicals for biological control, animal repellents, etc., can solve the problems of affecting antibacterial properties and the inability of silver nanoparticles to be effectively and uniformly dispersed, etc. Achieve uniform size and avoid agglomeration

Inactive Publication Date: 2019-05-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that silver nanoparticles are easy to spontaneously aggregate into large particles and cannot be effectively and evenly dispersed in the matrix material, which affects its antibacterial performance, the invention provides a MOFs-loaded nano-silver antibacterial material and a preparation method thereof

Method used

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  • MOFs-loaded nano silver antibacterial material and preparation method thereof
  • MOFs-loaded nano silver antibacterial material and preparation method thereof
  • MOFs-loaded nano silver antibacterial material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Dissolve 2.496g of zinc nitrate hexahydrate and 0.528g of terephthalic acid in an appropriate amount of DMF, pour the solution into a hydrothermal reaction kettle, and react in an oven at 130°C for 4 hours. After the reaction is completed, naturally cool to room temperature, and the obtained sample Wash three times with DMF, pour off the supernatant, and dry the obtained product in a vacuum oven at 60°C for 24 hours to obtain MOF-5 crystal particles. Weigh 0.2g of MOF-5 and evenly disperse it in 30mL of water to make MOF-5 aqueous solution, add 0.1mol / L silver nitrate aqueous solution to it while stirring, and stir in the dark for more than 6h, a light pink precipitate is formed, and the supernatant Pour off the liquid, activate it in a vacuum oven at 60°C for 12h, reduce it with an aqueous solution of glucose (the molar ratio of glucose and silver ions is 1:2) for 1h, pour off the supernatant, and dry it in a vacuum oven at 60°C for 24h to obtain nanoscale Ag@MOF-5 ant...

Embodiment 2

[0026] Dissolve 0.378mmol β-cyclodextrin (β-CD) in 15mL, 200mmol / L potassium hydroxide solution, stir well and filter, and collect the filtrate in a 25mL small beaker. Take an appropriate amount of methanol in a 400mL glass bottle, place the beaker containing the filtrate in the glass bottle, seal it, and store it at room temperature for more than one week until colorless cubic crystals are formed in the small beaker. Collect colorless cubic crystals, wash the crystals fully with absolute ethanol, and then dry them in a vacuum oven at 60°C for 24 hours to obtain β-CD-MOF crystal particles. After grinding, β-CD-MOF powder is obtained. The scanning electron microscope image is shown in Figure 5 (a). Prepare 4.45g / L β-CD-MOF ethanol solution and 0.1mol / L AgNO 3 Each ethanol solution was 30mL, and the AgNO 3 The ethanol solution was added to the β-CD-MOF ethanol solution, kept in the dark and stirred for more than 6 hours, the supernatant was poured off, and the red precipitate...

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Abstract

The invention provides a MOFs-loaded nano silver antibacterial material and a preparation method thereof, belongs to the technical field of inorganic antibacterial materials, and can solve the problems that silver nanoparticles are easy to spontaneously aggregate into large particles and cannot be effectively and uniformly dispersed in a matrix material, and antibacterial property of the silver nanoparticles is affected. A porous material MOFs with a tailorable structure, large specific surface area and various topologies is used as a template, nano-silveris loaded on the surface, skeleton andpore channels of MOFs, and an Ag@MOFs efficient antibacterial material which is uniform in size and easy to disperse is synthesized. According to the invention, the porous material MOFs is used as the template, and the MOFs is loaded with nano silver by a hydrothermal method. The method is simple to operate and low in cost, and has wide application value in the fields of nano silver-based antibacterial agents and the like needing antibacterial functions.

Description

technical field [0001] The invention belongs to the technical field of inorganic antibacterial materials, and in particular relates to a MOFs-loaded nano-silver antibacterial material and a preparation method thereof. Background technique [0002] At present, chemical drugs such as antibiotics and disinfectants are abused, and the problem of microbial variation caused by drug resistance is extremely serious. New antibacterial agents that can efficiently kill pathogenic bacteria have become a research hotspot. Silver-based antibacterial agents not only have high antibacterial activity and broad antibacterial spectrum, but also have a low tendency to induce bacterial resistance. The size of silver is a key factor affecting its antibacterial performance, and the antibacterial performance of silver nanoparticles is more than 200 times higher than that of micron-sized silver. Although small-sized silver nanoparticles have higher antibacterial properties, nanoparticles tend to sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/10A01P1/00
Inventor 胡银春王仁虎程一竹
Owner TAIYUAN UNIV OF TECH
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