Controllable fabrication of perovskite SrZrO3 hollow cuboidal nanoshells

Perovskite-type SrZrO3 hollow cuboidal nanoshells have been successfully prepared via a simple hydrothermal route from concentrated KOH solutions without any organic or inorganic templates. The products experienced morphology variations of solid microparticles, core–shell particles and hollow nanoshells by alternatively adjusting the base concentration, the reaction temperature and the reaction duration. The hollow cuboidal nanoshells were size tunable by simply adjusting the base concentration. Investigations of the synthetic parameters revealed that the formation of SrZrO3 hollow cuboidal nanoshells was driven by the Ostwald ripening process. Also, the hollow cuboidal nanoshells exhibited defect-induced blue light emission that centered at 468 nm when the samples were exposed to a 324 nm laser.