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Nano-silver-contained anhydrous glycerin sol and preparation method thereof

An anhydrous glycerol, nano silver technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems such as no nano silver particles, no nano silver sol, etc., and achieve good application Prospect, good bactericidal effect, low technical difficulty effect

Inactive Publication Date: 2016-01-06
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of nano-silver particles in anhydrous glycerin system, and there is no report on the stable nano-silver sol with anhydrous glycerol as a dispersion medium.

Method used

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  • Nano-silver-contained anhydrous glycerin sol and preparation method thereof
  • Nano-silver-contained anhydrous glycerin sol and preparation method thereof
  • Nano-silver-contained anhydrous glycerin sol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Take 20g of glycerin and place it in a round bottom flask, add 0.3g of polyvinylpyrrolidone K300, place it in an oil bath, add a magnetic stirrer, stir with a magnetic stirrer, and heat at 90°C for 20 minutes to make the polyvinylpyrrolidone Vinylpyrrolidone K30 was dissolved in anhydrous glycerol to form a clear glycerol solution.

[0019] 2. Add 0.07 g of silver nitrate solid equivalent to the mass fraction of glycerin to the glycerin solution obtained in step 1, keep the heating temperature at 90° C. and continue magnetic stirring to dissolve the silver nitrate in the anhydrous glycerin solution to form a clear solution.

[0020] 3. Heat up the clear solution formed in step 2 to 110°C, and stir it magnetically at this temperature, react for 0.5 hours, and then cool to room temperature to obtain a yellow transparent anhydrous glycerin sol containing nano-silver.

[0021] After the silver element in the sol was separated, the obtained silver element was tested with ...

Embodiment 2

[0023] 1. Put 20g of glycerin in a round bottom flask, add 0.5g of polyvinylpyrrolidone K3, place it in an oil bath, add magnets, stir with a magnetic stirrer, and heat at 90°C for 20 minutes to make the polyvinylpyrrolidone K30 was dissolved in anhydrous glycerol to form a clear glycerol solution.

[0024] 2. Add silver nitrate solid equivalent to 0.1 g of glycerol mass fraction to the glycerin solution obtained in step 1, keep the heating temperature at 90° C. and continue magnetic stirring to dissolve the silver nitrate in the anhydrous glycerin solution to form a clear solution.

[0025] 3. Heat up the clear solution formed in step 2 to 110°C, and stir it magnetically at this temperature, react for 1 hour, and then cool to room temperature to obtain a yellow transparent anhydrous glycerol sol containing nano-silver.

[0026] After the silver element in the sol was separated, the obtained silver element was tested with a transmission electron microscope, which proved that t...

Embodiment 3

[0028] 1. Put 20g of glycerin in a round bottom flask, add 0.3g of polyvinylpyrrolidone K3, place it in an oil bath, add magnets, stir with a magnetic stirrer, and heat at 90°C for 20 minutes to make the polyvinylpyrrolidone K30 was dissolved in anhydrous glycerol to form a clear glycerol solution.

[0029] 2. Add silver nitrate solid equivalent to 0.1 g of glycerol mass fraction to the glycerin solution obtained in step 1, keep the heating temperature at 90° C. and continue magnetic stirring to dissolve the silver nitrate in the anhydrous glycerin solution to form a clear solution.

[0030] 3. Heat up the clear solution formed in step 2 to 110°C, and stir it magnetically at this temperature, react for 3 hours, and then cool to room temperature to obtain a yellow transparent anhydrous glycerol sol containing nano-silver.

[0031] After the silver element in the sol was separated, the obtained silver element was tested with a transmission electron microscope, which proved that ...

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Abstract

The invention discloses nano-silver-contained anhydrous glycerin sol and a preparation method thereof. The nano-silver-contained anhydrous glycerin sol is characterized in that the sol is transparent yellow liquid in appearance, and a dispersion medium of the sol is anhydrous glycerin; particles of the dispersion phase are elemental silver particles with the particle size range of 2 nanometers to 70 nanometers, and the particles can be stably dispersed in the glycerin medium; an auxiliary dispersing agent is polyvinylpyrrolidone K30. The preparation method of the sol comprises the steps that firstly, the anhydrous glycerin and the polyvinylpyrrolidone K30 are mixed in a round-bottom flask and heated to form a clear glycerin solution; and then solid silver nitrate is added into the solution and stirred through a magnetic stirrer to be dissolved, the solution is heated to a certain temperature, stirring continues to generate a reaction, and the nano-silver-contained anhydrous glycerin sol can be obtained after cooling. According to the nano-silver-contained anhydrous glycerin sol and the preparation method thereof, the process is simple, the cost is low, and the obtained sol has good stability and can be stored at the room temperature and in air.

Description

technical field [0001] The invention relates to a stable anhydrous glycerol sol containing nanometer silver and a preparation method thereof, belonging to the field of nanometer material technology and interface chemistry. Background technique [0002] Nano-silver and the assembly system containing nano-silver particles have excellent performance in biological activity, electricity, heat, optics, catalysis, etc., and have broad application prospects in industrial catalysis, electronics and electrical engineering, medical and health, and fine chemicals. In particular, nano-silver particles have a huge surface area, which can release a large amount of active silver ions (Ag + ), thus having a good and long-lasting antibacterial effect, it is an ideal antibacterial additive in various skin care and cosmetic applications. There have been many reports on methods for preparing nano-silver, most of which are chemical reduction methods. In these methods, silver salts and appropriat...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/24B82Y30/00B82Y40/00
Inventor 易和平陈硕平宋保辉方亮
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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