Chemical preparation method of Ag nanoparticle

Abstract

The invention relates to a method for preparing silver nanometer particles, wherein it is characterized in that: it uses silver nitrate or silver perchlorate as initial reactant; uses sodium oleate or linolic acid sodium as surface activator; mixing them at free ratio; uses toluene, dimethylbenzene, and sub dichlorobenzene or chloroform reaction medium; in organic phase, obtaining silver nanometer particles. The invention has simple control, without preparing forward element and organic solvent with high boiling point, with low cost. The inventive silver nanometer particles can be dispersed in non-polar medium and polar medium.

Description

Technical field:

[0001] The invention belongs to the synthesis technology of solution chemical method, in particular to a chemical method for preparing silver nanoparticles. Background technique:

[0002] Since silver nanoparticles can produce characteristic absorption peaks in the visible or near-infrared band. Therefore, in the past two decades, research on silver nanomaterials has attracted widespread attention worldwide. At present, silver nanoparticles have shown good application prospects in the preparation of organic / inorganic nano-hybrid light-emitting devices, nano-biosensors and polymer materials with antibacterial functions.

[0003] According to the different chemical environments in which silver nanoparticles are located, their preparation methods can be divided into three categories: organic phase, aqueous phase and two-phase reaction. The first method mainly uses sodium borohydride as a reducing agent. Under the action of specific surfactant molecules, under...

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