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Antibiotic material of nano silver by using ricepaper pith as carrier and preparation method

A nano-silver antibacterial and herbal technology, which is applied in the field of preparation of nano-silver antibacterial materials, can solve the problems of weak physical adsorption force, complicated preparation process and difficult elution, so as to reduce human body irritation, simplify preparation process, improve The effect of adhesion

Inactive Publication Date: 2006-10-18
何素梅 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is to utilize the physical adsorption of the micropores of the rush to the nano-silver colloid to adsorb the nano-silver to the cellulose surface of the rush. This physical adsorption is extremely weak. In the subsequent washing process, if washing Too many times will wash out a large amount of nano-silver, resulting in waste; if the number of washes is too small, it will be difficult to wash off the impurities generated by chemical reactions, resulting in the final product being irritating to the human body
In addition, the preparation process of this product is more complicated, so that the production cost is higher

Method used

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  • Antibiotic material of nano silver by using ricepaper pith as carrier and preparation method
  • Antibiotic material of nano silver by using ricepaper pith as carrier and preparation method
  • Antibiotic material of nano silver by using ricepaper pith as carrier and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of nano-silver antibacterial material with Tongcao as carrier.

[0033] (1) Wash the herbaceous root with distilled water, air-dry it and pulverize it into particles with a diameter ranging from 0.3 mm to 2 mm;

[0034] (2) The above-mentioned 5kg Tongcao granules are added to the aqueous solution containing 2kg silver nitrate and 20kg, and stirred for 0.5 hour;

[0035] (3) The above-mentioned Tongcao granules impregnated with silver nitrate solution are taken out, immersed in 30kg of 95% medical ethanol, and the duration is 1 minute;

[0036] (4) The Tongcao granules described in (3) are taken out from medical ethanol, immersed in 20kg of sodium borohydride aqueous solution containing 100g, and stirred for 0.5 minutes;

[0037] (5) The Tongcao granules described in (4) were taken out from the aqueous solution of sodium borohydride, washed with 20kg of distilled water for 10 minutes, then added 5g of hydrogen peroxide, stirred for 0.5 hours, and then washe...

Embodiment 2

[0040] Preparation of nano-silver antibacterial material with Tongcao as carrier.

[0041] (1) Wash the herbaceous root with distilled water, air-dry it and pulverize it into particles with a diameter ranging from 0.3 mm to 2 mm;

[0042] (2) Add above-mentioned 5kg Tongcao granules to the aqueous solution containing 3kg silver nitrate and 20kg, and stir for 1.5 hours;

[0043] (3) The above-mentioned Tongcao granules impregnated with the silver nitrate solution are taken out, immersed in 30kg of 95% medical ethanol, and the duration is 3 minutes;

[0044] (4) The Tongcao granules described in (3) are taken out from medical ethanol, immersed in 20kg of sodium borohydride aqueous solution containing 500g, and stirred for 3 minutes;

[0045] (5) The Tongcao granules described in (4) are taken out from the aqueous solution of sodium borohydride, washed with 20 kg of distilled water for 10 minutes, then added with 10 g of hydrogen peroxide, stirred for 0.5 hours, and then washed ...

Embodiment 3

[0048] Preparation of nano-silver antibacterial material with Tongcao as carrier.

[0049] (1) Wash the herbaceous root with distilled water, air-dry it and pulverize it into particles with a diameter ranging from 0.3 mm to 2 mm;

[0050] (2) Add above-mentioned 5kg Tongcao granule to the aqueous solution containing 4kg silver nitrate and 20kg, stir for 3 hours;

[0051] (3) The above-mentioned Tongcao granules impregnated with silver nitrate solution are taken out, immersed in 30kg of 95% medical ethanol, and the duration is 6 minutes;

[0052] (4) The Tongcao granule described in (3) is taken out from medical ethanol, immersed in the aqueous solution containing 1kg of sodium citrate in 20kg, stirred for 5 minutes;

[0053] (5) The Tongcao granules described in (4) were taken out from the sodium citrate aqueous solution, washed with 20 kg of distilled water for 10 minutes, then added 25 kg of hydrogen peroxide, stirred for 0.5 hour, and then washed with distilled water;

[...

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Abstract

The invention relates to a preparation method of a nano-silver antibacterial material with Herba Trichoniae as a carrier, comprising: washing, drying and pulverizing the Herba Trichoniae; adding it to an aqueous solution containing silver nitrate and stirring; taking it out and immersing it in medical ethanol; taking it out, Immerse in the aqueous solution of the reducing agent and stir; take it out, wash with distilled water, add hydrogen peroxide, stir, and wash with distilled water again; the obtained Tongcao granules are dried and pulverized. The invention makes nano-silver particles adhere to the fiber surface and micropores of the grass through electrostatic interaction, so that the nano-silver particles grown on the grass carrier can obtain a high degree of dispersion and stability, so as to achieve efficient and lasting antibacterial and antibacterial Effect.

Description

technical field [0001] The invention relates to an antibacterial material, in particular to a method for preparing a nano-silver antibacterial material with fenugreek as a carrier. technical background [0002] Nano-silver particles belong to nano-noble metal particles, which refer to metal silver particles with a particle size between 1 and 100 nm, also known as ultra-fine precious metal particles. The excellent performance of nano-silver materials depends on its unique microstructure. Nano-silver particles have significant surface effects, quantum size effects and macroscopic quantum tunneling effects, thus showing biological, thermal, optical, electrical, magnetic, Catalytic and sensitive properties enable it to be used in the fields of biomedicine, optics, electronics, optoelectronic materials, catalysts, and magnetic materials. [0003] Silver has been widely used in the field of biomedicine since ancient times. In ancient times, it was dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N25/08A01P3/00
Inventor 曾钫李娜何素梅何锦波
Owner 何素梅