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Preparation method of silver nanoparticle with controllable particle size

A technology of silver nanoparticles and particle size, applied in nanotechnology and other directions, can solve the problems of product size, shape, difficult to control, harsh high temperature reaction conditions, complex preparation process, etc., and achieve the effects of simple equipment, low cost and simple operation.

Active Publication Date: 2014-12-24
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have deficiencies to a certain extent, such as difficult to control product size and shape;

Method used

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  • Preparation method of silver nanoparticle with controllable particle size
  • Preparation method of silver nanoparticle with controllable particle size
  • Preparation method of silver nanoparticle with controllable particle size

Examples

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Embodiment 1

[0026] The preparation method of silver nanoparticles of the present embodiment comprises the following steps:

[0027] 1) Dissolve 0.169 g of silver nitrate and 0.15 g of polyvinylpyrrolidone in 50 ml of ethylene glycol to form solution A; weigh 0.0175 g of sodium chloride and dissolve in 20 ml of ethylene glycol to form solution B;

[0028] 2) Mix 50 ml of solution A and 20 ml of solution B as a reaction solution and transfer it to an Erlenmeyer flask, and place it in a microwave for 0.5 hours to react to obtain silver nanoparticles;

[0029] 3) After microwave irradiation reaction, centrifuge the suspended reaction solution, and then wash the precipitate with deionized water and absolute ethanol;

[0030] 4) Dry the precipitate in a vacuum drying oven at 50°C for 5 hours to obtain black silver powder.

[0031] A certain amount of surfactant polyvinylpyrrolidone is added to the silver nitrate solution, the purpose is to control the morphology of the product, and also to pre...

Embodiment 2

[0033] The preparation method of silver nanoparticles of the present embodiment comprises the following steps:

[0034] 1) Dissolve 0.169 g of silver nitrate and 0.15 g of polyvinylpyrrolidone in 50 ml of ethylene glycol to form solution A; weigh 0.0297 g of sodium chloride and dissolve in 20 ml of ethylene glycol to form solution B;

[0035] 2) Mix 50 ml of solution A and 20 ml of solution B as a reaction solution and transfer it to an Erlenmeyer flask, and place it in a microwave for 0.5 hours to react to obtain silver nanoparticles;

[0036] 3) After microwave irradiation reaction, centrifuge the suspended reaction solution, and then wash the precipitate with deionized water and absolute ethanol;

[0037] 4) Dry the precipitate in a vacuum drying oven at 50°C for 5 hours to obtain black silver powder.

[0038] A certain amount of surfactant polyvinylpyrrolidone is added to the silver nitrate solution, the purpose is to control the morphology of the product, and also to pre...

Embodiment 3

[0040] The preparation method of the cobalt nanospheres of this embodiment comprises the following steps:

[0041] 1) Dissolve 0.169 g silver nitrate and 0.15 g polyvinylpyrrolidone in 50 ml ethylene glycol to make solution A; weigh 0.0597 g sodium chloride and dissolve it in 20 ml deionized water to make solution B;

[0042] 2) Mix 50 ml of solution A and 5 ml of solution B as a reaction solution and transfer it to an Erlenmeyer flask, and place it in a microwave for 0.5 hours to react to obtain silver nanoparticles;

[0043] 3) After microwave irradiation reaction, centrifuge the suspended reaction solution, and then wash the precipitate with deionized water and absolute ethanol;

[0044] 4) Dry the precipitate in a vacuum drying oven at 40°C for 6 hours to obtain black silver powder.

[0045] A certain amount of surfactant polyvinylpyrrolidone is added to the silver nitrate solution, the purpose is to control the morphology of the product, and also to prevent particle aggl...

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Abstract

The invention discloses a preparation method of a silver nanoparticle with a controllable particle size. The preparation method comprises the following steps that (1) silver nitrate and a surface active agent are dissolved in glycol to be prepared into a solution A, and sodium chloride is dissolved in deionized water to be prepared into a solution B; (2) the solution A and the solution B are mixed to be used as a reaction solution and transferred to a conical flask for microwave irradiation reaction, so as to obtain the silver nanoparticle, and the diameter of the silver nanoparticle can be controlled between 100-250 nm by controlling reaction conditions. The preparation method has the characteristics of easiness in obtaining raw materials, simple equipment, low cost, simplicity in operation, high efficiency, rapidity and the like, the prepared silver nanoparticle has the advantages of regular shape, uniformity in particle size distribution, good dispersibility, controllability in size, high yield and good stability and is suitable for large-scale industrial production. The silver nanoparticle prepared by using the preparation method increasingly shows an important application value in the fields of microelectronics, photoelectron, catalysis, magnetic devices, information storage, medicine and the like, and the preparation and the performance research become hot spots.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing silver nanoparticles with controllable particle size. Background technique [0002] Metal nanoparticles have been widely used in catalysis, luminescent materials, magnetic materials, semiconductor materials and nano-devices due to their surface effect, volume effect, quantum size effect and macroscopic quantum tunnel effect, as well as their unique electrical, magnetic and optical properties. a wide range of applications. Metallic silver nanopowder is an important noble metal nanomaterial. Due to its excellent properties such as high thermal conductivity, optical properties, antibacterial properties and catalytic properties, it is widely used in microelectronics, optoelectronics, catalysis, magnetic devices, information storage, Medicine and other fields have increasingly shown important application value, and the research on i...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
Inventor 吴会杰冉倩妮张进张铁军
Owner CHONGQING UNIV OF ARTS & SCI
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