Effect of Ultrasonic Treatment on Formation of Nanodimensional Structures in ZnO–MoO3 System

The effect of ultrasonic treatment on transformations in the ZnO–MoO3 oxide system with atomic ratios Zn/Mo = 15 : 85, 25 : 75, 50 : 50, and 75 : 25 was investigated. It was shown that sonochemical activation leads to phase transformations in molybdenum oxide, its reduction with the formation of molybdenum suboxides (Mo8O23, Mo4O11), and chemical reaction between the initial oxides with the formation of zinc molybdate (a-ZnMoO4). Nanoparticles with increased specific surface area and pore size compared with the initial compositions are formed. Similarities were found between the sonochemical and mechanical activation of composites of the system.