Nano silver copper bimetal colloid/liquid with high antibacterial performance and preparation method thereof

A nano-silver and bimetallic technology, applied in botany equipment and methods, fungicides, chemicals for biological control, etc., can solve the problems of weak fungal sterilizing ability, achieve improved antibacterial ability, high practical value, and save The effect of usage
CN109819979AInactive Publication Date: 2019-05-31尚蒙科技无锡有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
尚蒙科技无锡有限公司
Publication Date
2019-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses nano silver copper bimetallic colloid / liquid with high antibacterial performance.A preparation method of the nano silver copper bimetallic colloid / liquid with high antibacterial performancecomprises the following steps of: adding an aqueous solution or an absolute ethyl alcohol solution of a stabilizing agent into the aqueous solution or the absolute ethyl alcohol solutionof silver nitrate and copper nitrate, stirring uniformly, adding the aqueous solution or the absolute ethyl alcohol solution of a reducing agent, and stirring for 30-60minutes to obtain the nano silver copper bimetallic colloid / liquid.According to the preparation method of the nano silver copper bimetallic colloid / liquid with high antibacterial performance,a chemical synthesis method is utilized to obtain the nano silver copper bimetallic colloid / liquid, and prepared nano particles are within 10 nanometers.The minimum bacteriostatic concentration of the composite nano silver copper bimetal toescherichia coli and candida albicans reaches 0.5ppm and 1ppm respectively.The minimum bacteriostatic concentration of nano silver synthesized by the conventional method is 3ppm and 10ppm respectively.The antibacterial capacity of anano silver copper dispersion is improved by 6 times and 10 times.The use of the nano silver copper bimetal saves the use amount of silver and has high practical value.
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Description

technical field

[0001] The invention relates to the field of nano-antibacterial technology disinfection, in particular to a nano-silver-copper bimetallic colloid / liquid with high antibacterial performance. Background technique

[0002] Nano-silver dispersion (or hydrosol colloid) has been widely used in antibacterial disinfection, including medical equipment, surgical dressings and antibacterial coatings, etc. It is an important component of inorganic antibiotics and disinfection, killing bacteria and viruses. It has strong antibacterial ability and is widely used Spectrum antibacterial (up to more than 650 kinds of bacteria and viruses), no drug resistance and other advantages.

[0003] At present, inorganic antibacterial is mainly represented by nano silver, and antibacterial nano silver sol or solution is prepared by electrolytic method or chemical reduction method. The particle size is 5-100 nanometers. Among them, the advantage of the electrolysis method is that it do...

Claims

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