Silver-based composite particle, preparation method of the silver-based composite particle and antibacterial agent containing the silver-based composite particle

A technology of composite particles and antibacterial agents, applied in the directions of botanical equipment and methods, chemicals for biological control, biocides, etc. It can improve the washing resistance, ensure durability, and prevent photochromic problems.

Inactive Publication Date: 2013-01-02
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure is used to prevent the agglomeration of silver nanoparticles and control the release rate of silver. However, the preparation process of this core-shell structure material is complicated. What's more, silicon oxide is transparent to visible light. Silver, especially si

Method used

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  • Silver-based composite particle, preparation method of the silver-based composite particle and antibacterial agent containing the silver-based composite particle
  • Silver-based composite particle, preparation method of the silver-based composite particle and antibacterial agent containing the silver-based composite particle
  • Silver-based composite particle, preparation method of the silver-based composite particle and antibacterial agent containing the silver-based composite particle

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0053] (1) Preparation of solution A: Add 10g of sodium silicate (equivalent to about 5 grams of effective silica content) into 200g of a mixed solvent of water and ethanol (water:ethanol=40:1, volume ratio), and stir evenly to form a mixed solution . Then add 3g of polyethylene glycol to the formed mixed solution, and continue to stir until the polyethylene glycol is completely dissolved to form a silicon-containing stock solution (referred to as A solution), wherein the mass percentage of polyethylene glycol in A solution is about 1.5% .

[0054] (2) Prepare B solution: Dissolve ammonium chloride in water to form B solution, in which the concentration of ammonium chloride is 1.2mol / L.

[0055] (3) Slowly add solution A to 200g solution B under stirring, and use pH test paper to detect the pH value of the mixed solution during the dropping process until the pH value of the final mixed solution is about 10 to end the reaction, and then keep the temperature at 55°C Stirring w...

preparation Embodiment 2

[0061] Except that poly(1,4-butylene glycol) was used instead of polyethylene glycol in step (1), and zinc nitrate was used instead of zinc chloride in step (5), the procedure of the remaining steps was the same as that of Preparation Example 1.

preparation Embodiment 3

[0063] Except that AgF aqueous solution was used instead of silver nitrate aqueous solution in step (4), and zinc nitrate was used instead of zinc chloride in step (5), the rest of the steps were the same as in Preparation Example 1.

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Abstract

The invention discloses a silver-based composite particle having bactericidal effects and a preparation method of the silver-based composite particle, and especially relates to silica/silver composite powder which has a core-shell structure, contains silver element particles or a silver-based compound having a radial concentration gradient and has strong sterilization effects, and an antibacterial agent containing the silver element particle or silver-based compound composite particles as main ingredients. The antibacterial agent has washing resistance and photochromism resistance.

Description

technical field [0001] The present invention relates to a silver-based composite powder with bactericidal effect, in particular, to a silica / silver composite powder with a core-shell structure and wherein the elemental silver or silver-based compound has a radial concentration gradient, It has a strong bactericidal effect, and has the characteristics of washing resistance and photochromic resistance. Background technique [0002] Elemental silver or silver-based compounds have a strong bactericidal effect, mainly because the outer layer of the silver element is easy to obtain and lose. Especially as an inorganic metal antibacterial material, silver-containing antibacterial agents have attracted widespread attention. In particular, compared with organic antibacterial agents, inorganic metal antibacterial materials have the advantages of broad spectrum, high efficiency, no side effects, and less resistance to drug resistance, etc., and people's research on them is becoming mo...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/08A01P1/00D06M23/02D06M11/83
Inventor 何涛
Owner YANTAI UNIV
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