METHOD FOR OBTAINING PLATINUM METAL NANOPARTICLES Russian patent published in 2009 - IPC B22F9/14 B82B3/00 C25C5/02 C25C1/20 

FIELD: nanotechnologies.

SUBSTANCE: invention relates to methods for obtaining platinum metal nanoparticles. The method includes electrochemical dissolution of non-ferrous and platinum metals alloy at controllable value of anode potential from +0.1 to +1.2 V with production of nanoparticles of 1-15 nanometers. At dissolution of nickel-platinum metal alloy with platinum metal content of up to 5 wt % in sulphate-chloride dissolvent, anode potential is set to a value of +0.3 V to produce nanoparticles of the size of 10-15 nanometers and to a value of up to +0.8 V to produce noparticles of the size of 1-7 nanometers. At dissolution of nickel-platinum-palladium-rhodium alloy with platinum content of 2%, palladium of 1.5% and rhodium of 1.5 % from mass of alloy, anode potential is set to a value of +0.8 V to +1.2 V to produce nanoparticles of the size of 1-5 nanometers. At dissolution of copper-platinum metal alloy in sulfuric acid, anode potential is set to a value of +0.6 V to produce nanoparticles of the size of 1.0-4.0 nanometers.

EFFECT: chances to obtain nanoparticles of necessary structure and composition by adjusting anode potential value.

5 cl, 4 ex