Obtaining of dispersed metals by pulse electrolysis

O.I.Kuntyi,
 
O.I.Bilan,
 
Ye.B.Okhremchuk,
 
H.I.Zozula
 

Electrical Contacts and Electrodes - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #10
http://www.materials.kiev.ua/article/463

Abstract

The effect of pulsed electrolysis on formation of dispersed zinc in solutions ZnCl2 + + NH4Cl, palladium and silver respectively in AgNO3 solutions in AN and PdCl2 in DMF. Established that the main effects on the geometry of the dispersed metal particles are pulse, pause and the concentration of precipitable metal ions. It is shown, with decreasing duty cycle is observed a tendency to form of spherical particles. In an environment of organic aprotic solvents (AN, DMF) reduction in pulse duration allows to obtain of discrete nanoscale particles. Based on AFM microscopy, the mechanism of the latter formation is offered. The results of SEM microscopy and schemes of particle geometry depends on the conditions of electrolysis are given.


AN, DISPERSE ZINK, DMF, NANOPARTICLES, PALLADIUM, PULSE ELECTROLYSES, SILVER