METAL NANO-PARTICLE PREPARATION AND METHOD FOR PRODUCING IT Russian patent published in 2007 - IPC B22F9/24 

FIELD: nano-chemistry, chemical preparations containing metal nano-particles.

SUBSTANCE: metal nano-particle preparation is produced in quazi-equilibrium system of inverse micelles due to reducing metal ions in complex [ mX...nMeⁿ⁺ ... pO₂ ] where mX -heterocyclic compound with chelating properties, nMeⁿ⁺ - ions of metals, pO₂ - oxygen molecules, m, n, p - quantity of respective components in complex, due to charge transfer inside complex initiated by excess of free energy provided due to presence highly developed interface between dispersed phase and dispersion medium. Method comprises steps of preparing inversely micellar solution of surface active matter in non-polar solvent; preparing and introducing to vessel with inversely micellar solution metal salt ion solution or solution of its complex; introducing into vessel with reaction mixture in solid state structuring heterocyclic compound forming oxocomplexes with metal ions; aerating reaction mixture; soaking colloidal solution for time period sufficient for finally forming stable nano-structural aggregations of metal. Invention allows produce by chemical way in industrial scale nM metal particles at wide selection of compounds as initial reagents.

EFFECT: reduced number of operations, accelerated process for preparing reaction mixtures, possibilities for regulating mode and condition of synthesis.

30 cl, 7 dwg