No abstract

The basic conditions for the formation of nanostructured copper electrodes by depositing silver sols from solutions of complexes in an environment of an organic proton solvent dimethylformamide (DMF) are established. Their comparative catalytic activity for the conversion of carbon (IV) oxide has been investigated. Кеуwordsgalvanic replacement, nanostructured electrodes, electrolytic copper, silver, carbon (IV) oxide, conversion.

Sonogalvanic replacement and galvanic replacement synthesis of silver nanoparticles (AgNPs) by magnesium scrap in sodium polyacrylate solutions were studied. It was found that during these processes in NaPA solutions silver is practically not deposited on the magnesium surface. Sodium polyacrylate provides stabilization of AgNPs with the formation of yellow solutions with maximum absorption of ~415 nm. It is shown that sonogalvanic replacement synthesis of AgNPs occurs due to the simultaneous course of galvanic replacement by magnesium and sonoreduction of Ag (I) by radicals and reducing agents. The rate of sonogalvanic replacement synthesis of AgNPs is 20-30% higher compared to galvanic substitution by mechanical stirring.