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Method for preparing nano-silver water solution by modified glucose

A technology of glucose and nano-silver is applied in the field of preparation of nano-silver colloidal solution, which can solve the problems of uneven particle size, uneven distribution, and high preparation cost, and achieves low human irritation, high human safety, and good medical value. Effect

Inactive Publication Date: 2013-02-20
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method is simple to prepare and the particle size is uniform, but the corresponding equipment is expensive and the preparation cost is high; the chemical method is relatively low in cost, but the particle size is uneven, the stability is poor, easy to oxidize, and the protective agent or reducing agent is highly irritating or Potentially toxic to humans, making it difficult to develop
[0004] In the prior art, the preparation method of nano-silver solution uses toxic protective agent or some highly reactive chemical raw materials, the prepared nano-silver particles have large particle size or uneven distribution, and the prepared nano-silver colloidal solution is potentially toxic or irritating. It will greatly reduce its application in functional textiles and functional medical and sanitary products

Method used

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  • Method for preparing nano-silver water solution by modified glucose
  • Method for preparing nano-silver water solution by modified glucose
  • Method for preparing nano-silver water solution by modified glucose

Examples

Experimental program
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Effect test

Embodiment 1

[0018] 1. Dissolve 5g of 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose in 100ml deionized water to obtain 5% 2-(3-carboxy-1-propionylamino)- 2-deoxy-D-glucose aqueous solution;

[0019] 2. Dissolve 1g of glucose in 100ml of deionized water to obtain a 1% glucose aqueous solution;

[0020] 3. Configure a silver nitrate solution with a mass fraction of 7.87g / L, add dropwise 10% ammonia solution until the precipitate disappears, and obtain a silver ammonia solution with a mass fraction of 7.87g / L;

[0021] 4. Mix 5% 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose aqueous solution, 1% glucose aqueous solution and silver ammonia solution with a mass fraction of 7.87g / L at a ratio of 10:1 : 2 volume ratio mixing, stirring at a temperature of 60° C. for 10 h to obtain a nano-silver solution with a particle size of 5-70 nm.

[0022] Referring to accompanying drawing 1, it is the ultraviolet spectrogram of the nano-silver colloidal solution that the present embodiment provides...

Embodiment 2

[0026] 1. Dissolve 5g of 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose in 100ml deionized water to obtain 5% 2-(3-carboxy-1-propionylamino)- 2-deoxy-D-glucose aqueous solution;

[0027] 2. Dissolve 1g of fructose in 100ml of deionized water to obtain a 1% fructose aqueous solution;

[0028] 3. Configure a silver nitrate solution with a mass fraction of 7.87g / L, add 10% ammonia solution dropwise until the precipitate disappears, and obtain a silver ammonia solution with a mass fraction of 7.87g / L;

[0029] 4. With 5% 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose, 1% fructose aqueous solution and mass fraction are 7.87g / L silver ammonia solution with 10:2: 1 volume ratio, and stirred at 60° C. for 10 h to obtain a nano-silver solution with a particle size of 5-70 nm.

Embodiment 3

[0031] 1. Dissolve 5g of 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose in 100ml deionized water to obtain 5% 2-(3-carboxy-1-propionylamino)- 2-deoxy-D-glucose aqueous solution;

[0032] 2. Dissolve 0.001g of sodium borohydride in 100ml of deionized water to obtain a 1% sodium borohydride aqueous solution;

[0033] 3. Configure a silver nitrate solution with a mass fraction of 7.87g / L, add 10% ammonia solution dropwise until the precipitate disappears, and obtain a silver ammonia solution with a mass fraction of 7.87g / L;

[0034] 4. Mix 5% 2-(3-carboxy-1-propionylamino)-2-deoxy-D-glucose aqueous solution and silver ammonia solution with a mass fraction of 7.87g / L at a volume ratio of 10:1, Titrate with 1% sodium borohydride aqueous solution at 40°C and stir until the reaction is complete to obtain a nano-silver solution with a particle size of 5-70 nm.

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Abstract

The invention discloses a method for preparing nano-silver water solution by modified glucose, which comprises the steps of: mixing 2-(3-carboxy-1-oxopropyl)amino-2-deoxy-D-glucose water solution with the mass percent concentration of 0.01-10% and reducing agent water solution with the mass percent concentration of 0.0001-10% with silver ammonia solution with the mass fraction of 0.01-100g / L according to the volume ratio of 1000: 1: 2-1: 1: 2, and stirring for 5-600min at the temperature of 10-90 DEG C to obtain nano-silver colloidal solution with the average particle size of 1-100nm. The method can be used for preparing the nano-silver colloidal solution by modified glucose 2-(3-carboxyl-1-oxopropyl)amino-2-deoxy-D-glucose, and the obtained nano-silver is even in particle size, good in dispersity, stable in performance and low in irritation to the human body, thus having better medical value.

Description

technical field [0001] The invention relates to a preparation method of nano-silver colloidal solution, belonging to the technical field of nano-materials. Background technique [0002] Nanoparticles, also known as ultrafine particles, refer to nanoparticles with a particle size between 1 and 100, which are formed by agglomerating several to dozens of atoms. Nanoparticles have many special properties different from conventional solids, such as small size effect, surface effect and macroscopic quantum tunneling effect. Studies in recent years have shown that nano-silver particles have a strong inhibitory and killing effect on 12 Gram-negative bacteria, 8 Gram-positive bacteria and 6 molds. Although the effect of its long-term use remains to be further studied, according to previous experimental results, nano-silver particles will not cause pathogens to produce antibodies or mutate, and will not interfere with the normal immune function of the human body. Therefore, it ha...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
Inventor 陈宇岳徐思峻林红
Owner SUZHOU UNIV
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