Abstract:Monodisperse Zn_xCd_1−xS spheres were successfully fabricated with a high yield by a facile hydrothermal route. The as-prepared samples were characterized by X-ray diffractometry, scanning electron microscopy and UV-vis diffusion reflectance spectroscopy. The results indicate that all the prepared samples have the same hexagonal wurtzite phase and exhibit good size uniformity and regularity. Degradation of rhodamine-B (RhB) was used to evaluate the photocatalytic activities of Zn_xCd_1−xS samples. Zn_0.4Cd_0.6S possessed the best photocatalytic activity and exhibited high stability during the reaction.

Key words: monodisperse Zn_xCd_1−xS spheres; hydrothermal synthesis; solid solution; photocatalytic activity