Рост нитевидно-волокнистых структур из кристаллов серебра на меди в водных растворах AgNO3

Abstract

The topochemistry of the processes that proceed on the surface of copper foil and wire during the chemical interaction of Cu with Ag+ ions at different AgNO3 сoncentration in the aqueous solution has been investigated by various techniques. Periodic growth of filamentous structures (tip to 3 cm in diameter) from silver crystals in the form of needle, thread, plate, dendrite and cuboctahedron has been discovered. Ag microcrystal formation in the solution was also observed during the growth of the structures on the coppe r surface. Current oscillations were recorded in the electric circuits formed from different growing structures in the same solution. The mechanisms of Ag crystal growth is discussed.