metal nanoparticles

The current state of research on the formation of bimetallic nanostructures by galvanic replacement is presented. The effectiveness of galvanic replacement for the controlled synthesis of Au/Ag, Pd/Ag, and Pt/Ag on a silver nanotemplate in aqueous solutions is shown. The features of morphological and structural transformations of sacrificial nanosilver at various replacement stages are discussed.

The effectiveness of the galvanic replacement method for decorating a porous surface with metal nanoparticles and nanostructures is considered. It is shown that depending on the functional purpose, foam, porous, and dendritic metal 3D substrates are mainly used for modification by galvanic replacement. In particular, these are nickel and copper substrates on which noble metals are deposited. The peculiarities of the formation of nanosized deposits on porous copper and nickel surfaces depending on the structure of the latter and the conditions of galvanic substitution are given.

Polymer hydroxyethylcellulose matrix modification was made by mechanochemical method using copper containing nanoparticles, obtained by electrochemical reduction from copper sulphate solutions in water- ethanol medium. Interactions of copper containing nanoparticles with hydroxyethylcellulose were studies. Antimicrobial effect of the nanocomposites obtained was found.