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Green preparation method of nano-silver particles

A nano-silver particle and nano-silver technology are applied in the field of green preparation of nano-silver particles, which can solve the problems of environmental harm, nano-silver agglomeration, high production cost, etc., and achieve the effects of mild reaction and simple process.

Inactive Publication Date: 2018-06-29
赵丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method has high requirements on instruments and equipment, and the production cost is expensive
Chemical methods often use hydrazine hydrate, formaldehyde, polyols, organic amines, etc. as reducing agents. Although these reducing agents have high activity, they are harmful to the environment, and the prepared nano-silver is prone to agglomeration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Mix 1g / L bird's nest aqueous solution with 1g / L silver nitrate aqueous solution, wherein the mass ratio of bird's nest to silver nitrate is 10:1, and react in a water bath at 80°C for 100min to obtain a nano-silver colloid solution, which is washed repeatedly with ethanol and deionized water , centrifugation and drying to obtain silver nanoparticles.

Embodiment 2

[0013] Mix 10g / L bird's nest aqueous solution with 10g / L silver nitrate aqueous solution, wherein the mass ratio of bird's nest to silver nitrate is 5:1, and react in an oil bath at 100°C for 300min to obtain a nano-silver colloid solution, which is repeated with ethanol and deionized water. Nano silver particles are obtained after washing, centrifuging and drying.

Embodiment 3

[0015] The bird's nest aqueous solution of 20g / L is mixed with the silver nitrate aqueous solution of 50g / L, and the mass ratio of wherein said bird's nest and described silver nitrate is 1:1, 200 ℃ of oil baths react 600min, obtain nano-silver colloid solution, use ethanol and The nano-silver particles are obtained after repeated washing with deionized water, centrifugation and drying.

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PUM

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Abstract

The invention discloses a green preparation method of nano-silver particles. The green preparation method of the nano-silver particles comprises the steps of mixing 1 to 20g / L of cubilose water solution and 0.01 to 100g / L of silver nitrate water solution, reacting for 100 to 600min at the temperature of 80 DEG C to 200 DEG C, and obtaining a nano-silver colloidal solution; and using ethyl alcoholand deionized water for repetitively washing, centrifuging, and drying to obtain the nano-silver particles. By adopting cubilose as a reducing agent and a stabilizer of the nano-silver particles, thegreen preparation method of the nano-silver particles provided by the invention has the advantages of simple process, mild reaction, green and environment protection.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a green preparation method of nanometer silver particles. Background technique [0002] In recent years, nanotechnology has become a cutting-edge technology among various disciplines such as physics, chemistry, biology, medicine, and material science. It has attracted the attention of researchers because of its immeasurable impact on energy, medicine, electronics, and aviation industries. . Metal nanoparticles have aroused great interest due to their unique physical, chemical, optical, electrical, magnetic, thermal, biological and other properties. Metal nanoparticles, especially nano-silver, have great potential application value in many fields. Such as sensing technology, optical devices, catalysis, biomarkers, drug delivery and cancer therapy, etc. [0003] The traditional preparation of nano-silver is divided into physical method and chemical method. The physical method ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 赵丽
Owner 赵丽
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