Simple synthesis of zinc sulfide and cadmium sulfide under hydrothermal conditions

Abstract

Pure ZnS and CdS were synthesized under hydrothermal conditions. The reactions of Zn or ZnO with S at 240°C yielded pure ZnS. Similar reactions at lower temperatures gave plate crystals of an unknown phase along with ZnS and ZnO. Pure CdS was obtained by the reaction between CdO and S at 240°C while the reaction of metal Cd and S gave a mixture. The as-prepared CdS crystals had rod shapes.