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Method for adopting isoniazide for preparing nanometer silver sol at room temperature

A technology of nano-silver sol and isoniazid, which is applied in the field of metal nano-functional material preparation, can solve problems such as difficult to meet, and achieve the effect of simple equipment, mild operating conditions and improved stability

Inactive Publication Date: 2014-09-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silver content of silver sol prepared by this technology is less than 0.001mol / L, which is difficult to meet the requirements of practical application

Method used

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  • Method for adopting isoniazide for preparing nanometer silver sol at room temperature
  • Method for adopting isoniazide for preparing nanometer silver sol at room temperature
  • Method for adopting isoniazide for preparing nanometer silver sol at room temperature

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) At room temperature, put 0.68g of isoniazid in a 50mL volumetric flask, add deionized water to fully dissolve, and prepare 0.10mol / L solution A, dissolve 0.05g of PVP-K30 in 8.5mL of deionized In water, prepare solution B, put 0.85g of silver nitrate in a 50mL volumetric flask, add deionized water to fully dissolve, and prepare solution C of 0.10mol / L;

[0029] (2) Under stirring conditions, first add 0.50mL solution A to solution B to obtain a mixture of the two, and then use a pipette to add 1.00mL solution C dropwise to the mixture of solutions A and B (in In this system, the content of protective agent PVP-K30 is 0.5wt%, and the molar ratio of isoniazid and silver nitrate is 0.5), after continuing to keep the room temperature reaction for 1.5h, the yellow-brown nano-silver sol with silver concentration of 0.01mol / L is obtained , the transmission electron microscopy results are as follows figure 1 As shown, the average particle size of the particles is about 30 ...

Embodiment 2

[0031] (1) At room temperature, put 0.68g of isoniazid in a 50mL volumetric flask, add deionized water to fully dissolve, and prepare a 0.10mol / L solution A, dissolve 0.50g of PVP-K30 in 4.0mL of deionized In water, prepare solution B, put 8.49g of silver nitrate in a 50mL volumetric flask, add deionized water to fully dissolve, and prepare solution C of 1.00mol / L;

[0032] (2) Under stirring conditions, first add 5.00mL of solution A to solution B to obtain a mixture of the two, and then use a pipette to add 1.00mL of solution C dropwise to the mixture of solutions A and B (in In this system, the content of protective agent PVP-K30 is 5.0wt%, and the mol ratio of isoniazid and silver nitrate is 0.5), after continuing to keep the reaction at room temperature for 6h, the reddish-brown nano-silver sol that silver concentration is 0.10mol / L is obtained, The transmission electron microscope results are as follows figure 2 As shown, the average particle size of the particles is a...

Embodiment 3

[0034] (1) At room temperature, put 0.68g isoniazid in a 50mL volumetric flask, add deionized water to fully dissolve, and prepare a 0.10mol / L solution A, dissolve 0.50g PVP-K30 in 7.0mL deionized In water, prepare solution B, put 8.49g of silver nitrate in a 50mL volumetric flask, add deionized water to fully dissolve, and prepare solution C of 1.00mol / L;

[0035] (2) Under stirring conditions, first add 2.50mL of solution A to solution B to obtain a mixture of the two, and then use a pipette to add 0.50mL of solution C to the mixture of solutions A and B dropwise (in In this system, the content of protective agent PVP-K30 is 5.0wt%, and the mol ratio of isoniazid and silver nitrate is 0.5), after continuing to keep the reaction at room temperature for 4h, the reddish-brown nano silver sol that silver concentration is 0.05mol / L is obtained, The transmission electron microscope results are as follows image 3 As shown, the average particle size of the particles is about 15 nm...

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Abstract

The invention discloses a method for adopting isoniazide for preparing nanometer silver sol at room temperature. Silver nitrate is used as a silver source, the isoniazide is adopted to serve as a complexing agent and a reducing agent, a water-soluble surface active agent is used as a protecting agent, the nanometer silver sol with the average grain diameter within 100 nm is prepared at the normal temperature, and particle granularity does not change obviously after the silver sol is placed at the room temperature for 30 days. According to the method, operation at normal temperature and normal pressure can be achieved, the environment is protected, the technological process is simple, and the nanometer silver sol which is wide in silver concentration range, controllable in particle diameter and good in dispersibility is obtained. The adopted isoniazide can have the complexing effect while serving as the reducing agent, the grain size of particles can be effectively controlled, and the stability of the sol is improved.

Description

technical field [0001] The invention discloses a method for preparing nano-silver sol at room temperature by using isoniazid. Specifically, it relates to a technology of using isoniazid as a complexing agent and a reducing agent to conveniently prepare aqueous phase nano-silver sol at room temperature, and belongs to the technical field of metal nano-functional material preparation. Background technique [0002] As a precious metal material, silver has remarkable properties such as good ductility, antibacterial properties, electrical conductivity and heat transfer properties, and has been widely used in many fields such as conductor materials, electronic devices and environmental protection. When the size of silver particles is reduced to the nanometer level, due to the large specific surface area and small size effect, compared with bulk materials, it has special conductivity, antibacterial and catalytic properties. It is used in biomedicine, electronic information, enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 王虹赵菁菁吕丽云
Owner TIANJIN UNIV
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