Silver-carried antibacterial agent with nanometer porous and making method thereof

The technology of nano-mesoporous and antibacterial agent is applied in the field of novel nano-mesoporous silver-carrying antibacterial agent and its preparation, which can solve the problems of uneven distribution, poor service life, shedding, etc. Effect

Inactive Publication Date: 2006-08-16
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its main disadvantages are: (1) The particle size of the antibacterial agent is generally 0.5 to 10 microns, the surface area that can contact with germs or bacteria is small, and the metal ion of the antibacterial active ingredient is unevenly distributed on the surface of the carrier. Efficiency needs to be further improved; (2) The binding force between metal ion and carrier is weak, easy to fall off, and the service life is poor

Method used

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  • Silver-carried antibacterial agent with nanometer porous and making method thereof
  • Silver-carried antibacterial agent with nanometer porous and making method thereof
  • Silver-carried antibacterial agent with nanometer porous and making method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 2g P123, 15mL H 2 O and 60mL 2M HCl were stirred at 35°C for 1h, then 4.47mLTEOS was added and stirred for 24h, then stood at 80°C for 24h, then the product was obtained by suction filtration and washing, and finally roasted at 550°C to remove the surfactant. Take 2g of the above product and add 20mL H 2 O and 20mL EtOH, drop 0.25g AgNO 3 (20%, m%) solution, ultrasonic for 3min, soaked overnight, dried in an oven at 80°C, and then decomposed Ag in an atmosphere of nitrogen and hydrogen (V / V=9 / 1) at 300°C to obtain Ag / SBA -15 antimicrobial, labeled Ag-2.5-SBA-15-300. Finally, it is used for the antibacterial test against Escherichia coli.

Embodiment 2

[0029] 2g P123, 15mL H 2 O and 60mL 2M HCl were stirred at 35°C for 1h, then 4.47mLTEOS was added and stirred for 24h, then stood at 80°C for 24h, then the product was obtained by suction filtration and washing, and finally roasted at 550°C to remove the surfactant. Take 2g of the above product and add 20mL H 2 O and 20mL EtOH, drop 0.5gAgNO 3 (20%, m%) solution, ultrasonic for 3min, soaked overnight, dried in an oven at 80°C, and then decomposed Ag in an atmosphere of nitrogen and hydrogen (V / V=9 / 1) at 300°C to obtain Ag / SBA -15 antimicrobial, labeled Ag-5-SBA-15-300. Finally, it is used for the antibacterial test against Escherichia coli.

Embodiment 3

[0031] 2g P123, 15mL H 2 O and 60mL 2M HCl were stirred at 35°C for 1h, then 4.47mLTEOS was added and stirred for 24h, then stood at 80°C for 24h, then the product was obtained by suction filtration and washing, and finally roasted at 550°C to remove the surfactant. Take 2g of the above product and add 20mL H 2 O and 20mL EtOH, drop into 1g AgNO 3 (20%, m%) solution, ultrasonic for 3min, soaked overnight, dried in an oven at 80°C, and then decomposed Ag in an atmosphere of nitrogen and hydrogen (V / V=9 / 1) at 300°C to obtain Ag / SBA -15 antimicrobial, labeled Ag-10-SBA-15-300. Finally, it is used for the antibacterial test against Escherichia coli.

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Abstract

A nano-class mesoporous Ag-carried antibacterial agent used for detergent, cosmetics, water treating, textile, etc contains inorganic oxide as carrier with orderly mesopore structure and Ag as active antibacterial component. Its advantages are large specific surface area, broad spectrum, high effect and durability, and no damage to people.

Description

technical field [0001] The invention relates to an antibacterial agent and a preparation method thereof, in particular to a novel nanometer mesoporous silver-loaded antibacterial agent and a preparation method thereof. Background technique [0002] At present, environmental problems are becoming more and more severe, and infectious diseases are rampant, posing a great danger to human health. The most harmful ones are mainly hepatitis virus, influenza virus, HIV, and mutant tuberculosis bacteria. According to statistics from the Ministry of Health in 2003, in China, there were more than 250 million carriers of hepatitis B virus, more than 1.3 million people infected with sexually transmitted diseases, and more than 8.5 million people with tuberculosis. In the first half of 2003, "SARS" shocked the world even more. There are more than 10,000 people infected with AIDS every day in the world (the rising trend is the fastest in Asia), and hundreds of millions of people (times) a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N25/08A01P1/00
Inventor 李和兴张蝶青
Owner SHANGHAI NORMAL UNIVERSITY
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