Preparation method of antibacterial metal-organic framework membrane

A technology of organic framework and antibacterial metal, which is applied in the field of preparation of metal-organic framework membranes, can solve the problems of unstable membrane structure, cumbersome preparation steps, and poor repeatability, and achieve the effects of insufficient binding force, simple preparation process, and improved quality

Inactive Publication Date: 2015-08-26
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, the research on this kind of new antibacterial materials has attracted great research interest, but the preparation of metal-organic framework antibacterial

Method used

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  • Preparation method of antibacterial metal-organic framework membrane
  • Preparation method of antibacterial metal-organic framework membrane
  • Preparation method of antibacterial metal-organic framework membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Step 1. Pretreatment of the vector. Take a clean piece of glass and put it into 10mL sulfuric acid and hydrogen peroxide mixed solution (volume ratio 7:3), react at 70°C for 2 hours, take it out, wash it with water, and dry it;

[0017] Step 2. Organic molecule modification carrier. Put the pretreated glass slide into 10mL of 3-aminopropyltriethoxysilane, react at 50°C for 24 hours, take it out, wash with methanol and water three times, and dry to obtain the modified carrier;

[0018] Step 3. Place the modified glass flake carrier in 10mL aqueous solution containing 0.2g trimesic acid, and transfer it to a 15mL polytetrafluorohydrothermal reaction kettle, crystallize at 180°C for 24 hours, cool naturally, and take out Place the glass flakes in 10mL aqueous solution containing 0.15g 1,3,5-benzenetricarboxylic acid and 0.15g silver nitrate, transfer the above mixed solution and glass flakes to a 15mL hydrothermal kettle, and react at 120°C for 72 hours, Cool naturally, ...

Embodiment 2

[0021] Step 1. Pretreatment of the vector. Take a clean single crystal silicon wafer and put it into 10mL sulfuric acid and hydrogen peroxide mixed solution (volume ratio 7:3), react at 80°C for 1 hour, take it out, wash it with water, and dry it;

[0022] Step 2. Organic molecule modification carrier. Put the pretreated single crystal silicon wafer into 10mL of 3-aminopropyltrimethylsilane, react at 70°C for 2 hours, take it out, wash with methanol and water three times, and dry to obtain the modified carrier;

[0023] Step 3. Place the modified silicon chip carrier in 10mL aqueous solution containing 0.2g of 5-nitroisophthalic acid, then transfer to a 15mL polytetrafluorohydrothermal reaction kettle, and crystallize at 120°C for 12 hours , cool naturally, take out the glass flakes and place them in 10mL aqueous solution containing 0.2g of 5-nitroisophthalic acid and 0.7g of silver nitrate, transfer the above mixed solution and glass flakes to a 15mL hydrothermal kettle, and...

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Abstract

The invention relates to a preparation method of an antibacterial metal-organic framework membrane. The technical scheme of the method is that an organic molecule modification layer is pre-grown on the surface of a carrier, such that the carrier with an organic molecule coating is obtained; the organic molecules have coordination active groups, and can induce metal ions to coordinate with them; the metal ions are further assembled with the organic ligand, such that a continuous and dense metal-organic framework membrane is formed through growth. According to the invention, the metal-organic framework membrane is grown on the organic-molecule-modified carrier, such that the problems of insufficient binding force between the membrane and the carrier, poor weather resistance and poor heat resistance can be solved. Also, with the coordination effect of the organic ligand and the metal ions, metal ion release concentration and speed can be effectively controlled, such that a long-lasting antibacterial effect can be achieved. With the method provided by the invention, the quality of the metal-organic framework membrane is improved; the preparation process is simple; and the prepared antibacterial membrane can be widely applied in the aspects of aerospace equipment, medical equipment, product packaging, anti-bacterial coating, water treatment membrane, and the like. The membrane and the preparation method have a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of a metal-organic framework film with an antibacterial function. Background technique [0002] As an important class of antibacterial materials, metallic silver and its composites are widely used in aerospace, medical and sanitation, water purification, daily chemical industry and other fields because of their broad-spectrum antibacterial properties, low drug resistance, and long-lasting antibacterial effect. . However, silver-based antibacterial materials prepared by general physical methods or chemical methods mostly exist in the form of powder, nanocrystals or suspensions, with uneven particle size, poor stability, and prone to agglomeration or sedimentation. The ionic silver-based antibacterial materials used are difficult to control the release of ions. The presence of a large amount of silver ions has certain biological toxicity, whi...

Claims

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Application Information

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IPC IPC(8): A01N37/10A01N37/44A01N37/40A01N43/40A01N25/08A01N25/34A01P1/00
Inventor 叶俊伟孙圆宁桂玲卢歆怡程航林源
Owner DALIAN UNIV OF TECH
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