Preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants
A high-priced silver and oxide technology, applied in the directions of disinfectants, biocides, animal repellents, etc., can solve the problems of failing to provide product expressions, and achieve the effects of environmental and human safety, convenient application and simple process
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Embodiment example 1
[0035] Implementation case 1: Preparation of 2% aqueous solution and bactericidal performance test
[0036] 1. Weigh 24-90g oxidant potassium persulfate or sodium persulfate in distilled water, then add 48-60g potassium hydroxide or sodium hydroxide, then dilute to 1000g, heat to 80-90°C, add 1.4g silver nitrate and roll Mix well, keep warm at 80-90°C for 30 minutes, filter, and rinse with pure water four times to remove potassium sulfate (sodium) and potassium nitrate (sodium) and other impurities.
[0037] 2. Take 2g of electrocontact nano high-valent silver oxide raw powder, add 20ml of 25% concentrated ammonia water, 80ml of distilled water, and stir at room temperature for 5-10min until the electrocontact nano high-valent silver oxide is completely dissolved.
[0038] 3. Take 2.5 μl of the above-mentioned 2% electro-contact killing nanometer high-priced silver oxide sample stock solution and add it to 100ml distilled water (the bacteria content is greater than 100,000cpu / ...
Embodiment example 2
[0040] Implementation Case 2: Effervescent Tablet Preparation and Bactericidal Performance Test
[0041] 1. Take equal amounts of sodium bicarbonate and 0.5 g of tartaric acid and mix evenly, add 12.5 μl of the sample stock solution of 2% electro-contact killing nanometer high-priced silver oxide, and add 5% PVP (polyvinylpyrrolidone) alcohol solution as a binder in addition, 80 ℃ drying for 2-4 hours. Take 0.5-1g and make tablets with a pressure of 5-15 pounds.
[0042] 2. Put the above-mentioned effervescent tablets in 500ml of bacteria-carrying tap water at room temperature (the bacteria content is greater than 100,000cpu / cc, and the test bacteria are Escherichia coli, Staphylococcus aureus, and Candida albicans respectively), and let the effervescent tablets release naturally. After 1 minute, 20 μl was randomly taken from each of them and evenly spread on three sterile plates, incubated for 12-14 hours, and the colonies were counted. No treatment bacterial solution was used...
Embodiment example 3
[0043] Implementation Case 3: Preparation of Effervescent Tablets and Test of Disinfection Performance of Bathtubs in Homes and Hotels
[0044] 1. Take the same amount of sodium bicarbonate and 10g of tartaric acid, mix them evenly, add 20ml of the stock solution of 5% electro-contact killing nanometer high-priced silver oxide, and add 5% PVP (polyvinylpyrrolidone) alcohol as a binder, and dry at 80°C 2-4 hours. Take 1g and form into tablets with 10 pounds of pressure.
[0045] 2. Randomly drop 3 effervescent tablets above into a 0.5m room at room temperature. 3 Bacteria-carrying tap water (the bacteria content is greater than 10,000cpu / cc, the test bacteria are Escherichia coli, Staphylococcus aureus, and Candida albicans), let the effervescent tablets release naturally, and after 5 minutes, randomly take 20μl from each of them and spread evenly Cultivate for 12-14 hours on three sterile plates, count the colonies, and use no-treated bacterial solution as a control. The re...
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