Abstract

The morphology, favored shape with certain particle size, of nanostructures is considered as one of the most attractive fields of nanomaterials. To obtain the design of nanostructures, hydrothermal method is one of the most appropriate procedures by which preferable structures such as star anise-, desert rose-, sphere-, soya bean-, plate-, leaf-, and rod-like, can be prepared. These, can be synthesized through modifying some parameters. Thanks to bivalent transition metals are technologically important, this review emphasizes on the synthesis of bivalent metals tungstates, MWO4, (M=Mn, Fe, Co, Ni, Cu, Zn, Cd) through hydrothermal method and investigation on various morphologies of compounds containing tungstate. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques have been employed to show the size and morphology of as-fabricated samples. Moreover, chemical composition of samples is characterized through X-ray diffraction (XRD) analysis, and the properties and applications of these compounds were investigated as well.