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Method for preparing nano Ag/PVP (polyvinyl pyrolidone) composite material by utilizing ultraviolet irradiation

A composite material and ultraviolet light technology, which is applied in the field of preparing nano-Ag/PVP composite materials by ultraviolet light irradiation, can solve the problems of complex reaction system, nuclear pollution, and affecting material performance, and achieve the effect of easy agglomeration

Inactive Publication Date: 2012-07-04
HEFEI GENIUS NEW MATERIALS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, these methods also have shortcomings: the addition of initiators or metal reducing agents complicates the reaction system and affects the performance of the material; the generated nano-scale metal agglomerates and weakens the nano-effect of the material, etc.
[0005] The advantage of gamma rays is that it has high energy and has a wide range of applications. The disadvantage is that it has nuclear pollution

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  • Method for preparing nano Ag/PVP (polyvinyl pyrolidone) composite material by utilizing ultraviolet irradiation
  • Method for preparing nano Ag/PVP (polyvinyl pyrolidone) composite material by utilizing ultraviolet irradiation

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Embodiment 1

[0022] Take a certain amount of NVP monomer, dissolve it in 5 times the volume of distilled water, and then add a certain amount of 8wt%AgNO 3 solution, the mixture was stirred uniformly so that Ag + The concentration of ions in the system is 0.01mol / L, and the mixture is irradiated with ultraviolet light for 25 minutes, and the NVP monomer is polymerized to form PVP by ultraviolet radiation, and the Ag is irradiated by ultraviolet radiation at the same time. + Reducted into Ag particles, and aggregated into nano-Ag and dispersed in PVP, the final sauce brown solution is nano-silver / PVP composite.

Embodiment 2

[0024] Take a certain amount of NVP monomer, dissolve it in 10 times the volume of distilled water, and then add a certain amount of 8wt% AgNO 3 solution, the mixture was stirred uniformly so that Ag + The concentration of ions in the system is 0.02mol / L, and the mixture is irradiated with ultraviolet light for 20 minutes, and the finally obtained sauce brown solution is the nano-silver / PVP composite.

Embodiment 3

[0026] Take a certain amount of NVP monomer, dissolve it in 12 times the volume of distilled water, and then add a certain amount of 8wt% AgNO 3 solution, the mixture was stirred uniformly so that Ag + The concentration of ions in the system is 0.04mol / L, and the mixture is irradiated with ultraviolet light for 30 minutes, and the finally obtained sauce brown solution is nano-silver / PVP composite.

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Abstract

The invention discloses a method for preparing a nano Ag / PVP (polyvinyl pyrolidone) composite material by utilizing ultraviolet irradiation. According to the invention, an N-vinyl pyrolidone NVP monomer is polymerized by adopting ultraviolet irradiation to generate polyvinyl pyrolidone PVP, and simultaneously, Ag<+1> is reduced to Ag particles by utilizing ultraviolet irradiation, and the Ag particles are aggregated to form nano Ag which is dispersed in PVP so as to obtain the effectively dispersed nano Ag / PVP composite material. By using the method, a condition that addition of a metal reducing agent perplexes a reaction system and influences the property of the material is avoided; and simultaneously, a polymer PVP is utilized to clad nano metal particles, thus the problem that the nano particles are easy to aggregate is effectively solved, and a composite material having a specific nano effect is prepared.

Description

technical field [0001] The invention relates to the field of nano composite materials, in particular to a method for preparing nano Ag / PVP composite materials by ultraviolet light irradiation. Background technique [0002] Due to the unique small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect of metal nanoparticles, the nano-metal composite material exhibits excellent and unique properties in terms of light, electricity, magnetism, corrosion resistance, and catalysis. Properties have become the focus of research in the field of nanomaterials in recent years. Various methods of preparing nano-metal composite materials have also been developed one after another, and gradually become more perfect and mature. However, these methods also have shortcomings: the addition of initiators or metal reducing agents complicates the reaction system and affects the performance of materials; the generated nano-scale metal agglomerates and weakens t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F126/10C08F2/48C08F2/44C08K3/08B22F9/24
Inventor 方永炜
Owner HEFEI GENIUS NEW MATERIALS
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