Nano silver antimicrobial solution and preparing method thereof

A technology of nano-silver antibacterial and nano-metallic silver, which is applied in botany equipment and methods, chemicals for biological control, animal repellants, etc. Stability and other issues, to achieve the effect of simple preparation method, uniform distribution, and increased stability

Active Publication Date: 2011-09-14
晋大纳米科技(厦门)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of particle small, distribution in view of problems such as the instability that chitosan complex ion silver ion antibacterial solution exists, chitosan is not easy to dissolve and it is not easy to prepare nano-silver particles with chitosan as protective agent. Uniform, good stability, strong antibacterial ability and no toxic side effects, nano silver antibacterial solution containing nano metal silver particles and carboxymethyl chitosan and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] In the deionized aqueous solution containing 0.001mmol / L nano-metallic silver particles and 0.01mol / L carboxymethyl chitosan, add hydrazine hydrate reducing agent with 2 times the molar concentration of silver ion at 60°C, and react for 0.5h under stirring. The nano-silver antibacterial solution containing 0.001mol / L nano-metal silver particles (with a particle diameter of 3nm) and 0.01mmol / L carboxymethyl chitosan can be obtained.

Embodiment 2

[0014] In the deionized aqueous solution containing 0.008mmol / L nano-metallic silver particles and 0.02mmol / L carboxymethyl chitosan, add hydrazine hydrate reducing agent with 2 times the molar concentration of silver ion at 50°C, and react for 2 hours under stirring Obtain the nano-silver antibacterial solution containing 0.02mmol / L nano-metallic silver particles (particle diameter is 11nm) and 0.008mmol / L carboxymethyl chitosan.

Embodiment 3

[0016] Add hydrazine hydrate reducing agent with 2 times the molar concentration of silver ion to the deionized aqueous solution containing 0.02mmol / L nano-metallic silver particles and 0.05mmol / L carboxymethyl chitosan at 30°C, and react for 3h under stirring The nano-silver antibacterial solution containing 0.02mmol / L nano-metal silver particles (with a particle diameter of 30nm) and 0.02mmol / L carboxymethyl chitosan can be obtained.

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PUM

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Abstract

The invention discloses a nano-silver antibacterial solution and a preparation method thereof and relates to an antibacterial solution, in particular to the antibacterial solution containing nano-metal silver particles and carboxymethyl chitosan and the preparation method thereof as well as provides a nano-silver antibacterial solution containing nano-metal silver particles and carboxymethyl chitosan and providing small particles, uniform distribution, good stability, strong anti-bacterial capacity and no toxic and side effects and a preparation method thereof. The nano-silver antibacterial solution is a deionized water solution containing nano-metal silver particles of 0.001-0.1 mol / L and the carboxymethyl chitosan, with the diameter of the nano-metal silver particle preferred to be 3-80nm. The deionized water solution containing nano-metal silver particles of 0.001-0.1 mol / L and the carboxymethyl chitosan is then added with hydrazine hydrate reductant with two times of silver ions molar concentration to be stirred and reacted to obtain the nano-silver antibacterial solution containing the nano-metal silver particles and carboxymethyl chitosan.

Description

technical field [0001] The invention relates to an antibacterial solution, in particular to an antibacterial solution containing nanometer metal silver particles and carboxymethyl chitosan and a preparation method thereof. Background technique [0002] In life, there are all kinds of harmful bacteria, which bring various diseases to people. With the improvement of people's living standards, more and more attention has been paid to health and hygiene, and antibacterial materials and their products have increasingly attracted people's attention. Silver has strong antibacterial ability and broad-spectrum bactericidal effect, and it will not accumulate in the human body to cause toxicity. It has been used as an antibacterial active material long ago. The antibacterial agent with silver as the antibacterial active ingredient is an ideal safe and environment-friendly antibacterial agent. In order to reduce the amount of precious metal silver and reduce costs, the silver series a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N25/02A01P1/00
Inventor 吴继贤廖代伟符显珠
Owner 晋大纳米科技(厦门)有限公司
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