Inorganic/polymer composite nano-particles containing metal nano-particles and application

A technology of metal nanoparticles and composite nanoparticles, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of preparing uniform dispersion, easy aggregation of metal nanoparticles, particle size Narrow distribution and other problems, to achieve the effect of narrow particle size distribution, avoid oxidation reaction, and prevent aggregation and crystallization

Pending Publication Date: 2021-11-16
上海涂固安高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small size of metal nanoparticles, their surface energy is high and their chemical properties are extremely active, which makes metal nanoparticles easy to agglomerate and undergo oxidation reactions. Traditional preparation methods are often difficult to prepare uniformly dispersed, narrow particle size distribution, and effective Metal nanoparticles with good stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] step 1:

[0026] Using sol or gel method, using deionized water or lactone as solvent, using typical sugar (glucose, starch) as complexing agent, polyvinylpyrrolidone or hexadecylamine as surfactant, using sol or gel method Successfully prepared township nanoparticles with small particle size and narrow size distribution, prepared township nanoparticles with good dispersion by using sugar as a complexing agent, and prepared township and silver nanoparticles with a particle size of about 20mm by using sugar as a complexing agent. , palladium or copper metal nanoparticles, reducing the calcined product in a reducing atmosphere above 400°C and below the melting point of the salt, converting the metal oxide nanoparticles dispersed and attached to the surface of the water-soluble salt particles into metal nanoparticles, and reducing the product Washing and drying to obtain highly dispersed metal-blocking nanoparticles;

[0027] Step 2:

[0028] Through many polymerizable s...

Embodiment 2

[0034] step 1:

[0035] Using sol or gel method, using deionized water or lactone as solvent, using typical alcohol (ethylene glycol, glycerin) as complexing agent, polyvinylpyrrolidone or hexadecylamine as surfactant, using sol or gel The gel method successfully prepared silver nanoparticles with small particle size and narrow size distribution. Silver nanoparticles with good dispersion were prepared by using alcohol as a complexing agent, and silver nanoparticles with a particle size of about 20 mm were prepared by using alcohol as a complexing agent. Metal nanoparticles, reducing the calcined product in a reducing atmosphere above 400°C and below the melting point of the salt, converting the metal oxide nanoparticles dispersed and attached to the surface of the water-soluble salt particles into metal nanoparticles, washing and drying the reduced product, Obtain highly dispersed silver metal nanoparticles;

[0036] Step 2:

[0037] Through many polymerizable surfactants th...

Embodiment 3

[0043] step 1:

[0044] Using sol or gel method, using deionized water or lactone as solvent, using typical carboxylic acid (lactic acid, citric acid) as complexing agent, polyvinylpyrrolidone or hexadecylamine as surfactant, using sol or gel Palladium nanoparticles with small particle size and narrow size distribution were successfully prepared by glue method. Palladium nanoparticles with good dispersion were prepared by using carboxylic acid as a complexing agent, and the particle size was about 20mm. Silver, palladium or copper metal nanoparticles, the calcined product is reduced in a reducing atmosphere above 400°C and below the melting point of the salt, and the metal oxide nanoparticles dispersed and attached to the surface of the water-soluble salt particles are converted into palladium metal nanoparticles Particles, washing and drying the reduction product to obtain highly dispersed palladium metal nanoparticles;

[0045] Step 2:

[0046] Through many polymerizable sur...

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PUM

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Abstract

The invention discloses inorganic / polymer composite nano-particles containing metal nano-particles. The inorganic / polymer composite nano-particles are prepared by adopting a sol or gel method; deionized water or ketone is taken as a solvent; typical sugar, carboxylic acid, alcohol, amine or aldehyde is taken as as a coordination agent; polyvinylpyrrolidone or hexadecylamine is taken as as a surfactant; nickel nano-particles of which the particle sizes are small and the size distribution is narrow are successfully prepared by adopting the sol or gel method; and high-dispersity nickel, silver, palladium or copper nano-particles are prepared by taking lactic acid, starch and the like as coordination agents. Through the polymerizable surfactant, the strong activity of the metal nano-particles can be weakened; in addition, the metal nano-particles of different types can be effectively prepared by adopting the different coordination agents which integrates the functions of an accelerator and a buffer agent for quantitative and variable experiments; not only can the relatively high reaction speeds be acquired, but also high heat generated from metal reduction reactions can be reduced; and meanwhile, the metal nano-particles can be effectively protected against aggregation and crystallization.

Description

technical field [0001] The invention relates to the technical field of composite nanoparticles, in particular to an inorganic / polymer composite nanoparticle containing metal nanoparticles and its application. Background technique [0002] Inorganic / polymer composite nanoparticles containing metal nanoparticles are achieved by adding metal nanoparticles to inorganic / polymer composite nanoparticles to achieve certain metal characteristics, thereby changing the use conditions and functions of the composite nanoparticles. [0003] Due to their unique physical and chemical properties (such as optics, electromagnetics, catalysis, etc.), metal nanoparticles are generally used for the preparation of conductive coatings and structures when used in inorganic / polymer composite nanoparticles, also known as metal nanoparticles. nanoparticle sol. Metal nanomaterials are an important part of nanomaterials and the key basic materials for the preparation of various new functional materials,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F9/22B22F1/00B82Y40/00B82Y30/00
CPCB22F9/24B22F9/22B82Y40/00B82Y30/00
Inventor 刘倩童飞徐楠娇杜蓓徐盛成
Owner 上海涂固安高科技有限公司
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