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

Inactive Publication Date: 2010-09-29
张兴群 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned patents recognize that high-priced silver has higher bactericidal activity than ordinary nano-silver and monovalent silver, and also realize its potential use in sterilization, the prior patents did not provide the specific process and product performance of the developed product form

Method used

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  • Preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants
  • Preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants
  • Preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses preparation of electric touch-out nano high-valence silver oxides and application thereof as disinfectants. The electric touch-out nano high-valence silver oxides are chemical substances which can kill microorganism efficiently. The preparation method of the oxides used as the disinfectants comprises the following steps of: placing an oxidant of potassium persulfate or sodium persulfate into distillated water; adding sodium hydroxide, diluting and heating (80-90DEG C); adding silver nitrate and keeping the temperature for 30-60min; filtering and flushing with purified water four times to obtain electric touch-out nano high-valence silver oxide particles; dissolving with 5-10 percent ammonia water to obtain 2-5 percent disinfectant mother solution; and processing the disinfectant mother solution into water aqua, effervescent tablets and the like which have the final concentration of 0.3-0.5ppm and can completely kill various microorganisms for test with over 10,000cpu/cc to 100,000cpu/cc within 20min. The invention can be widely applied to various environment disinfections and instrument disinfection of hospitals, schools, swimming pools, bathing pools and other public places, families and the like. The electric touch-out nano high-valence silver oxides have low price of raw materials and simple process; and a preparation has remarkable function on various microorganisms and no harm to the environment and human beings.

Description

technical field [0001] The invention belongs to the technical fields of disinfection, sanitation, epidemic prevention and household use, and in particular relates to the use of a nanometer high-priced silver oxide bactericide for electric contact killing, in particular to the preparation of a bactericidal effervescent tablet. Background technique [0002] Silver was known as a fungicide 2,000 years ago. According to experiments, researchers measured the relative potency of different metal antibacterial potencies, and the arrangement is as follows: Ag>Hg>Cu>Cd>Ni>Co>Zn>Fe>Ca [0003] Silver participates in the bactericidal activity and also has different valence bond manifestations, Ag 4 o 4 As a new type of microbial fungicide, it was published in soap cosmetics chemical specialties, volume 72, No. 3, pages 52-59 in 1994. This article shows the excellent bactericidal performance of the substance. And through research, it is proposed that silver with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01P1/00A01N25/02A01N25/34
CPCA01N59/16
Inventor 张兴群曹张军许晓东
Owner 张兴群
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