The influence of the pH of the starting solution on the growth and formation processes of distinct heterostructures (brooms, flowers and rods) was investigated by Singh et al.[4] and Fodjo et al.,[5] in which sodium borohydride was employed to induce the reduction of silver nanoparticles on the surface of Ag2MoO4 crystals in order to enhance Raman scattering.

In other studies, Ag-Ag2MoO4 composites prepared by microwave-assisted hydrothermal synthesis presented interesting photocatalytic activity for the degradation of rhodamine B under visible light.

[7] Different synthetic methods have been employed to obtain pure β-Ag2MoO4 crystals, including solid-state reaction or oxide mixture at high temperature,[8] melt-quenching,[9] and Czochralski growth.

Moreover, the final products may be composed of irregular particle shapes with nonhomogeneous size distribution as well as contain the presence of secondary phases.

[14] Moreover, some researchers have investigated new ways to improve the photocatalytic properties of β–Ag2MoO4 crystals through hydrothermal processing at different temperatures (100, 120, 140 and 160 °C) for 2 h and replacement of Ag atoms by Zn to formation of silver zinc molybdate [β–(Ag2−2xZnx)MoO4] microcrystals by a sonochemical method at 30 °C for 3 h. These new crystals were able to degrade the organic cationic dye rhodamine B[15] and the anionic dye Remazol Brilliant Violet 5R[16]