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Preparation method of silver nanometer particle film

A silver nanoparticle and silver nanotechnology, applied in the field of preparation of silver nanoparticle film, can solve the problems of unfavorable product practical application, unfavorable, difficult to reduce costs, etc., and achieve the effects of easy practical application, good structural stability, and cost reduction

Inactive Publication Date: 2015-03-25
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are deficiencies in this preparation method. First of all, it is not possible to directly obtain a nano-square-shaped silver nanoparticle film on the substrate, which is not conducive to the practical application of the product, especially not conducive to directly using the product as a surface-enhanced Raman scattering ( SERS) active substrate, using laser Raman spectrometer to measure the pollutants attached to it; secondly, in order to obtain powdery solid product, it is necessary to use high temperature rotary evaporation method to evaporate the organic solvent in the obtained sol, so it is difficult to reduce the prepared cost

Method used

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  • Preparation method of silver nanometer particle film
  • Preparation method of silver nanometer particle film
  • Preparation method of silver nanometer particle film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The concrete steps of preparation are:

[0021] Step 1, firstly prepare silver nitrate pentanediol solution and polyvinylpyrrolidone pentanediol solution with a concentration of 4wt%, respectively; wherein, polyvinylpyrrolidone is polyvinylpyrrolidone K29 with a molecular weight of 58000. Then the sodium chloride ethylene glycol solution with a concentration of 0.8g / L is mixed with the polyvinylpyrrolidone pentanediol solution to obtain a mixed solution; wherein, the mass ratio of the polyvinylpyrrolidone in the mixed solution to sodium chloride is 320: 1.

[0022] Step 2, first inject the silver nitrate pentanediol solution and the mixed solution into the stirred pentanediol precursor solution at a temperature of 140°C at a rate of 600 μL / min and react for 5 hours to obtain a reaction solution; wherein, the reaction solution contains The volume ratio of the silver nitrate pentanediol solution, the mixed solution and the pentanediol precursor is 28:32:48, and the stirr...

Embodiment 2

[0025] The concrete steps of preparation are:

[0026] Step 1, first prepare silver nitrate pentanediol solution and polyvinylpyrrolidone pentanediol solution with a concentration of 4.5wt%, respectively; wherein, polyvinylpyrrolidone is polyvinylpyrrolidone K29 with a molecular weight of 58,000. Then the sodium chloride ethylene glycol solution with a concentration of 0.9g / L is mixed with the polyvinylpyrrolidone pentanediol solution to obtain a mixed solution; wherein, the mass ratio of the polyvinylpyrrolidone in the mixed solution to sodium chloride is 390: 1.

[0027]Step 2, first inject the silver nitrate pentylene glycol solution and the mixed solution into the stirred pentylene glycol precursor solution at a temperature of 145°C at a rate of 600 μL / min and react for 4.5 hours to obtain a reaction solution; wherein, in the reaction solution The volume ratio of the silver nitrate pentanediol solution, the mixed solution and the pentanediol precursor is 29:31:49, and the...

Embodiment 3

[0030] The concrete steps of preparation are:

[0031] Step 1, firstly prepare silver nitrate pentanediol solution and polyvinylpyrrolidone pentanediol solution with a concentration of 5wt%, respectively; wherein, polyvinylpyrrolidone is polyvinylpyrrolidone K29 with a molecular weight of 58000. Then mix the sodium chloride ethylene glycol solution with a concentration of 1g / L and the polyvinylpyrrolidone pentanediol solution to obtain a mixed solution; wherein, the mass ratio of polyvinylpyrrolidone and sodium chloride in the mixed solution is 460:1 .

[0032] Step 2, first inject the silver nitrate pentanediol solution and the mixed solution into the stirred pentanediol precursor solution at a temperature of 150°C at a rate of 600 μL / min and react for 4 hours to obtain a reaction solution; wherein, the reaction solution contains The volume ratio of the silver nitrate pentanediol solution, the mixed solution and the pentanediol precursor is 30:30:50, and the stirring speed o...

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Abstract

The invention discloses a preparation method of a silver nanometer particle film. The method first includes preparing silver nitrate pentadiol solution and polyvinylpyrrolidone pentadiol solution, mixing the silver nitrate pentadiol solution and the polyvinylpyrrolidone pentadiol solution to obtain mixed liquid, filling the silver nitrate pentadiol solution and the mixed liquid simultaneously into stirred pentadiol precursor liquid to react and obtain reaction liquid, utilizing ethanol or N, N-dimethyl formamide to dilute reaction liquid under normal temperature, conducting solid liquid separation on the reaction liquid to obtain silver nanometer diamonds, mixing the silver nanometer diamonds and the solvent ethanol or N, N-dimethyl formamide to obtain silver nanometer diamond ethanol solution or silver nanometer diamond N, N-dimethyl formamide solution, dropping the solution on a substrate and evaporating solvent in the silver nanometer diamond ethanol solution or the silver nanometer diamond N, N-dimethyl formamide solution to obtain the silver nanometer particle film. The film can directly act on the substrate to measure the attached rhodamine.

Description

technical field [0001] The invention relates to a method for preparing a film, in particular to a method for preparing a silver nanoparticle film. Background technique [0002] Silver nanoparticles have strong surface plasmons and have broad application prospects in the field of sensing and detection. For a long time, people have been unremittingly studying the controllable preparation method of silver nanostructures with special morphology to obtain silver nanoparticles with stronger surface plasmons, as disclosed in the Chinese invention patent application published on December 8, 2004 A "preparation method of cubic silver nanocrystalline particles" disclosed in specification CN 1552547 A. The preparation method mentioned in this description is the supersaturated solution crystallization method, and its process is: under stirring, take the surfactant that is 0.1~2.4 parts by weight and the silver nitrate that is 0.05~3.6 parts by weight are respectively dissolved in Part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24C23C18/42
Inventor 黄竹林孟国文陈斌
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI