In this work, monodisperse nanoparticles and nanorods of lanthanum
hydroxide was synthesized from the reaction of lanthanum(III) nitrate and sodium
hydroxide by sonochemical method. The effect of some of the parameters such as
feeding rate of precursors, different solvents of reaction, time of sonication, and
various surfactants on the particle size and morphology of products was studied. The
as-prepared products were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy.