ABSTRACT
Ultrasound provides a new method for the synthesis of nanomaterials or nanoparticles as it helps us in controlling the size and morphology of nanoparticles. The formation of nanoparticles includes the following steps: acoustic cavitation and nebulization. Tai and Guo used ultrasound and microwave simultaneously for the preparation of single crystalline CdS nanoflowers. Jung et al. synthesized zinc oxide nanorod arrays on a quartz wafer without using any metal catalysts via a sonochemical route. Abbas et al. carried out sonochemical reaction using inexpensive and nontoxic metal salt as reactant for the preparation of monodisperse magnetite nanocubes in aqueous medium. Sonication time has a major influence on reduction in amorphous carbon. Raja and Ryu prepared single and multiwalled carbon nanotubes using dichlorobenzene and ZnCl2 and characterized it. Wu et al. used sonochemical method for preparation of narrow and long graphene nanoribbons by chemically derived graphene sheets.
