Preparation method of silver nanoparticle composite antibacterial material based on metal organic framework
A technology of metal-organic frameworks and silver nanoparticles, applied in botany equipment and methods, chemicals for biological control, animal repellants, etc., can solve problems such as high price, insufficient antibacterial performance, and inability to release on demand , to achieve the effect of high biocompatibility, excellent antibacterial performance and strong antibacterial effect
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Embodiment 1
[0033] In this embodiment, the metal-organic framework (MIL-127) material is used as a template, and a polymer (poly-ortho-phenylenediamine, PoPD) is first introduced for compounding. The recovery and reduction of ions finally realize the synthesis of metal organic framework / silver nanoparticle composite antibacterial material, and the content of silver is 19wt%. The specific preparation method is as follows.
[0034] 1. Synthesis of MIL-127 ligand 3,3', 5,5'-azobenzenetetracarboxylic acid: Dissolve 9.5g of 5-nitroisophthalic acid in 125mL of deionized water, and heat the solution to 55°C. With stirring, 25 g of sodium hydroxide were added to give a yellow suspension. 50 g of D-(+)-glucose was dissolved in 75 mL of deionized water and added to the above suspension. When the suspension turned brown, the heating was stopped, and air was blown into the suspension using an air generator to react overnight. Wait for the suspension to cool down, place the suspension in an ice ba...
Embodiment 2
[0041] In this embodiment, the metal-organic framework (MIL-127) material is used as a template, and a polymer (poly-ortho-phenylenediamine, PoPD) is first introduced for compounding. The content of the polymer is 8wt%, and then silver is realized in silver-containing wastewater. The recovery and reduction of ions finally realize the synthesis of metal organic framework / silver nanoparticle composite antibacterial material, and the content of silver is 3wt%.
[0042] MIL-127 ligands 3,3',5,5'-azobenzenetetracarboxylic acid and MIL-127 were prepared in the same manner as in Example 1.
[0043] Preparation of MIL-127 / PoPD: 0.2 g of MIL-127 was activated under vacuum at 150° C. using a schlenk pipeline and an oil pump, and reacted overnight. After activation, it was cooled to room temperature and dispersed in 30 ml of a 0.1M solution of o-phenylenediamine in absolute ethanol. The mixture was then placed in a 100 mL autoclave. The autoclave was tightly sealed and heated to 50°C. ...
Embodiment 3
[0047] In this embodiment, the metal-organic framework (MIL-127) material is used as a template, and a polymer (poly-ortho-phenylenediamine, PoPD) is first introduced for compounding. The content of the polymer is 15wt%, and then silver is realized in silver-containing wastewater The recovery and reduction of ions finally realize the synthesis of metal organic framework / silver nanoparticle composite antibacterial material, and the content of silver is 10wt%.
[0048] MIL-127 ligands 3,3',5,5'-azobenzenetetracarboxylic acid and MIL-127 were prepared in the same manner as in Example 1.
[0049] Preparation of MIL-127 / PoPD: 0.2 g of MIL-127 was activated under vacuum at 150° C. using a schlenk pipeline and an oil pump, and reacted overnight. After activation, it was cooled to room temperature and dispersed in 30 ml of a 0.5M solution of o-phenylenediamine in absolute ethanol. The mixture was then placed in a 100 mL autoclave. The autoclave was tightly sealed and heated to 120°C...
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