▎ 摘　　要

The photolysis of AgCl nanoparticles stabilized in aqueous solution by graphene oxide or photo reduced graphene oxide using visible light gave nanocomposites containing silver nanoparticles with mean diameter 25-30 nm. These composites have electrocatalytic activity in the oxidation of methanol and formaldehyde in alkaline media. The oxidation of formaldehyde occurs prior to the electrochemical formation of the oxide phase on the silver nanoparticle surface, while the oxidation of methanol occurs after the electrochemical formation of the oxide phase.