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Preparation method of silver nanowires

A silver nanowire and ethylene glycol technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of product impurity, high temperature, high equipment requirements, etc., and achieve low equipment requirements, high purity, and simple process Effect

Inactive Publication Date: 2016-08-10
合肥松雷信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional solution method to prepare silver nanowires needs to add a catalyst and requires a higher temperature, which makes the equipment more demanding and the obtained product is not pure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Ag nanowires were prepared by an improved polyol reduction method. Briefly, 15 ml of a mixed organic solvent of polyvinylpyrrolidone and ethylene glycol with a volume ratio of 1:8 was added to a three-necked flask, and It was heated in an oil bath at 160 °C for 5 min. Then, add 2 ml containing 0.2 M AgNO to the three-necked flask 3 ethylene glycol, followed by adding 0.3 ml of 0.05 M NaCl solution, the solution was added at a rate of 1.0 ml / min, and heated at 160 ° C for 15 minutes. Stirring is required throughout the process. The product is first washed three times with acetone to remove ethylene glycol and remaining polyvinylpyrrolidone, and then washed three times with distilled water to remove acetone. The speed of the centrifuge is 2000 rpm, which should not be too large. The obtained product is silver nanowires with uniform size and high purity.

Embodiment 2

[0026] Ag nanowires were prepared by an improved polyol reduction method. Briefly, 15 ml of a mixed organic solvent of polyvinylpyrrolidone and ethylene glycol with a volume ratio of 1:5 was added to a three-necked flask, and It was heated in an oil bath at 160 °C for 5 min. Then, add 2 ml containing 0.2 M AgNO to the three-necked flask 3 ethylene glycol, followed by adding 0.3 ml of 0.05 M NaCl solution, the solution was added at a rate of 1.0 ml / min, and heated at 160 ° C for 15 minutes. Stirring is required throughout the process. The product was first washed three times with acetone to remove ethylene glycol and residual polyvinylpyrrolidone, and then washed three times with distilled water to remove acetone.

Embodiment 3

[0028] Ag nanowires were prepared by an improved polyol reduction method. Briefly, 15 ml of a mixed organic solvent of polyvinylpyrrolidone and ethylene glycol with a volume ratio of 1:10 was added to a three-necked flask, and It was heated in an oil bath at 160 °C for 5 min. Then, add 2 ml containing 0.2 M AgNO to the three-necked flask 3 ethylene glycol, followed by adding 0.3 ml of 0.05 M NaCl solution, the solution was added at a rate of 1.0 ml / min, and heated at 160 ° C for 15 minutes. Stirring is required throughout the process. The product was first washed three times with acetone to remove ethylene glycol and residual polyvinylpyrrolidone, and then washed three times with distilled water to remove acetone.

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Abstract

The invention discloses a preparation method of silver nanowires. The preparation method includes the following steps that the Ag nanowires are prepared through an improved polyhydric alcohol reduction method, put simply, polyvinylpyrrolidone is mixed with ethylene glycol, and an organic dispersant solution is obtained; the organic dispersant solution is added into a three-necked flask and heated and stirred for 5 min in a 160 DEG C oil bath pan; then, an ethylene glycol solution, of a certain concentration, of AgNO3 is dropwise added into the three-necked flask, and full stirring is performed; then, a NaCl solution of a certain concentration is dropwise added, co-heating is performed at 160 DEG C for a certain period of time, and full stirring is performed; and an obtained mixed solution is separated to obtain precipitate, and the precipitate is subjected to centrifugal washing three times with acetone and distilled water to obtain the silver nanowires. Compared with a traditional preparation method of the silver nanowires, the preparation method is simple in process and short in consumed time, does not need high temperature and lowers the requirement for equipment, and the silver nanowires uniform in size and high in purity are prepared.

Description

technical field [0001] The invention relates to the field of preparation of nanometer materials, in particular to a preparation method of silver nanowires. Background technique [0002] Due to the particularity of its structure, rice materials exhibit surface effects, volume effects, quantum tunneling effects, and dielectric confinement effects that are different from macroscopic substances. Based on the special properties of nanomaterials, they have been widely researched and applied in many fields of life and production, and are hailed as new materials in the 21st century by the material science community. The large specific surface area of ​​nanomaterials can provide enough opportunities for grain boundary slip, increase the deformation strength, and greatly improve the toughness of the material while maintaining the rigidity of the material. Among nanomaterials, one-dimensional nanomaterials have attracted increasing attention due to their unique electrical, magnetic, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00
CPCB22F9/24B22F1/07
Inventor 徐天林
Owner 合肥松雷信息科技有限公司
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