Method for preparing cadmium-doped nano zinc sulfide

The invention relates to a method for preparing cadmium-doped nano zinc sulfide. The method comprises the following steps of: preparing nano zinc sulfide by a hydrothermal method: mixing zinc acetate solution and thioacetamide solution according to the mol ratio of 1: 1, reacting for 10 hours at the temperature of 150 DEG C, cooling, washing and drying, thereby preparing the nano zinc sulfide; and preparing the cadmium-doped nano zinc sulfide by a solvothermal method: respectively dissolving the prepared nano zinc sulfide and tetrahydrate cadmium nitrate in an ethanol solvent, mixing the nano zinc sulfide and the cadmium nitrate to be uniform according to the mol ratio of 1: (1.7-1.8), reacting for 12 hours at the temperature of 80-120 DEG C, cooling, washing and drying, thereby preparing the cadmium-doped nano zinc sulfide. According to the cadmium-doped nano zinc sulfide prepared by the method, the crystal phase is hexagonal, the chemical formula is Cd0.8Zn0.2S, the granules are small and uniform, and the p