| 摘要 |
FIELD: nanotechnologies. ^ SUBSTANCE: invention relates to methods for obtaining nanoparticles of platinum metals - iron alloy. The method includes electrochemical dissolution of iron - platinum metal alloy, at controllable value of anode potential from +0.1 to +0.6 V with production of nanoparticles of the size of 0.5 - 10 nanometers in the form of non-dissolved deposit with of iron content of up to 40% from the sediment mass. At electrochemical dissolution of the iron-platinum metal alloy with the content of platinum metal of up to 10 wt % in sulphate-chloride dissolvent, anode potential is set to a value of +0.1 V to produce nanoparticles of the size of 5-10 nanometers with the iron content of up to 40 % from the sediment mass of the deposit, and to a value of +0.6 V to produce nanoparticles of the size of 0.5-5 nanometers with iron content of up to 10% from deposit mass. At electrochemical dissolution of iron-platinum-palladium-rhodium-iridium alloy with platinum content of 2.5%, palladium content of 2.5%, rhodium content of 2.5% and iridium content of 2.5% from mass of the alloy, anode potential is set to a value of +0.6 V to produce nanoparticles of the size of 1-5 nanometers with iron content of 10% from the sediment mass. The technical result is the possibility to produce nanoparticles of necessary composition and structure adjusting potential of the anode. ^ EFFECT: chances to obtain nanoparticles of necessary structure and composition by adjusting anode potential value. ^ 4 cl, 4 ex |
