Synthesis and characterization of lanthanum stannate nanoparticles

Phase-pure lanthanum stannate (La₂Sn₂O₇) nanoparticles with a pyrochlore structure were produced by a simple coprecipitation method for the first time. The optical properties of La ₂Sn₂O₇ synthesized by different conditions were investigated. They had different photoluminescence intensities around 400 nm at the same excitation wavelength. The size of La₂Sn₂O ₇ nanoparticles synthesized by the reverse-drop method was smaller than those synthesized by the nature-drop method. The nano-particles became large rapidly with the dilution of the original reagent solution.