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Preparation method of nano silver sol

A nano-silver sol, silver sol technology, applied in chemical instruments and methods, silver compounds, silver compounds and other directions, can solve the problems of inability to mass industrial production, low concentration of nano-silver sol, difficult to control reaction, etc., and achieve uniform sol size. , the effect of small particles and short production cycle

Inactive Publication Date: 2005-09-21
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the methods for preparing nano-silver sol are prepared by adding a reducing agent dropwise into silver nitrate solution, and the obtained nano-silver sol has disadvantages such as low concentration, difficult to control the reaction, unstable sol, and incapable of large-scale industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 170 grams of silver nitrate solid to 80 liters of deionized water to dissolve, heat to 90°C, and prepare liquid A; add 288.38 grams of anionic surfactant sodium lauryl sulfate to 20 liters of deionized water to dissolve, and heat to 90°C °C to prepare liquid B; mix liquid A and liquid B, and then keep at 90 °C for 50 minutes to obtain a yellow silver sol liquid with a particle size of 1-20 nanometers.

Embodiment 2

[0017] Add 150 grams of silver nitrate solid to 90 liters of deionized water to dissolve, heat to 60°C, and prepare liquid A; add 576.76 grams of anionic surfactant sodium lauryl sulfate to 20 liters of deionized water to dissolve, and heat to 60°C °C to prepare liquid B; mix liquid A and liquid B, and then keep at 60 °C for 20 minutes to obtain a maroon silver sol liquid with a particle size of 5-80 nanometers.

Embodiment 3

[0019] Add 180 grams of silver nitrate solid to 100 liters of deionized water to dissolve, heat to 80 ° C, and prepare liquid A; add 544.75 grams of anionic surfactant sodium dodecylsulfonate to 20 liters of deionized water to dissolve, and heat to Prepare liquid B at 80°C; mix liquid A and liquid B, and then keep at 80°C for 3 minutes to obtain a brown silver sol liquid with a particle size of 5-60 nanometers.

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PUM

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Abstract

The invention relates to a method for preparing a kind of nano-silver sol, which comprises the following steps: Solving the silver nitrate solid into deionized water to produce liquid A. Solving surfactants into deionized water to produce liquid B. Mixing liquid A with B, then getting the nano-silver sol in the size of 1-100nm at the temperature of 0-100 Deg. C.

Description

technical field [0001] The invention relates to a preparation method of nanometer silver sol. Background technique [0002] With the improvement of people's living standards, people put forward long-lasting sterile requirements for basic necessities of life, household appliances and living environment. As a new type of antibacterial material, nano silver-based materials have many advantages such as broad spectrum, durability, and safety, so the application fields are constantly expanding. As one of the antibacterial materials, inorganic antibacterial materials have broad market prospects. The composition of inorganic antibacterial agents mainly includes carriers and antibacterial ingredients, in which the carrier supports the antibacterial ingredients to ensure the stability of the active ingredients and has slow-release properties; the antibacterial ingredients are mainly some metal ions, such as silver, copper, zinc, etc., mercury, cadmium, etc. 1. Lead has antibacterial...

Claims

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Application Information

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IPC IPC(8): C01B21/48C01G5/00
Inventor 骆小红姜玉彩王艳蕾
Owner CHINA LUCKY FILM CORP