Preparation method of silver nanoparticles

A technology of silver nanoparticles and preparation steps, applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of difficult large-scale production, complicated preparation process, high preparation cost, etc., achieve low cost, simple preparation process, The effect of short preparation time

Active Publication Date: 2018-01-30
SHENZHEN GUOHUA OPTOELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing silver nanoparticles, aiming to solve the problems of complex preparation process, high preparation cost, high energy consumption and difficulty in large-scale production in the preparation method of silver nanoparticles in the prior art

Method used

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  • Preparation method of silver nanoparticles
  • Preparation method of silver nanoparticles

Examples

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Embodiment 1

[0029] refer to figure 1 Shown is a preferred embodiment provided by the present invention.

[0030] The preparation method of the silver nanoparticles provided by the present embodiment comprises the following steps:

[0031] 1), weigh silver nitrate (AgNO3) and water-soluble stabilizer, and place silver nitrate (AgNO3) and stabilizer in reaction container, as beaker etc.;

[0032] 2), add water in reaction vessel;

[0033] 3), at room temperature and normal pressure and in an environment with light, electromagnetically stir the solution in the reaction vessel until the color of the solution turns red, that is, silver nanoparticles are formed in the solution;

[0034] 4) After the reaction of the solution in the reaction vessel in step 3) is completed, store the solution in the reaction vessel containing the solution in the dark, and then extract the silver nanoparticles in the solution.

[0035] In the preparation method of silver nanoparticles provided above, only water ...

Embodiment 2

[0052] The difference between this embodiment and Embodiment 1 is:

[0053] refer to figure 2 Shown is a schematic diagram of the silver nanoparticles obtained in this example.

[0054] Weigh 17.4mg of silver nitrate, then weigh 55.4mg of polyvinylpyrrolidone (Mr~10000), the molar ratio of silver nitrate to polyvinylpyrrolidone is about 1:5, add 20ml of water, and fully dissolve under electromagnetic stirring in an environment with natural light. Silver nitrate and polyvinylpyrrolidone were dissolved in water to form a transparent solution. After a few minutes of reaction, the solution began to turn light red. With the prolongation of stirring time, the color gradually deepened. After 1.5 hours of reaction, a solution of silver nanoparticles was obtained. The resulting solution was stored protected from light.

Embodiment 3

[0056] The difference between this embodiment and Embodiment 1 is:

[0057] refer to image 3 Shown is a schematic diagram of the silver nanoparticles obtained in this example.

[0058] Weigh 17.2mg of silver nitrate, then weigh 77.8mg of polyvinylpyrrolidone (Mr ~ 10000), the molar ratio of silver nitrate to polyvinylpyrrolidone is about 1:7, and add them into the reaction vessel at the same time, then add 20ml of water, place in In an environment with natural light, stir the solution well to form a transparent solution. After a few minutes of reaction, a light red transparent solution was formed, and the reaction time was controlled to be 30 minutes to obtain a solution of silver nanoparticles, which was stored away from light.

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Abstract

The present invention relates to the technical field of silver nanoparticles, and discloses a preparation method of silver nanoparticles, comprising the following preparation steps: 1), weighing silver nitrate and a water-soluble stabilizer, and placing the silver nitrate and the stabilizer in a reaction vessel ; 2), adding water to the reaction vessel; 3), at room temperature and pressure and in an environment with light, electromagnetically stir the solution in the reaction vessel until the color of the solution in the reaction vessel turns red, and the solution forms 4), after the reaction of the solution in the reaction vessel in step 3) is completed, store the reaction vessel containing the solution in a dark place, and then extract the silver nanoparticles in the solution. The preparation method of silver nanoparticles of the present invention does not need to introduce any reducing agent, has no by-products, is environmentally friendly, green and environmentally friendly, has a simple preparation process and low cost; in the preparation process, no other equipment is required except for stirring the solution, and the operation is simple. Economical and convenient, low energy consumption.

Description

technical field [0001] The invention relates to the technical field of silver nanoparticles, in particular to a preparation method of silver nanoparticles. Background technique [0002] Silver metal is an element with stable chemical properties and excellent physical properties. Its good electrical and thermal conductivity make silver metal widely used in industry. Compared with macroscopic bulk materials, nanomaterials have unique physical and chemical properties. At the same time, with the development trend of electronic device integration and miniaturization, the synthesis of materials is also promoted to the direction of nanoscale. [0003] Due to its excellent physical and chemical properties and special properties at the nanoscale, silver nanomaterials have been widely used in the fields of optics, electricity, catalysis and biomaterials. In addition, a large number of antibacterial and antiviral studies on silver nanoparticles also show that silver nanoparticles have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB82Y40/00B22F9/24B22F1/054
Inventor 李楠水玲玲金名亮李旦周国富
Owner SHENZHEN GUOHUA OPTOELECTRONICS
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