Application of cuprous sulfide in recovery of au (iii) from aqueous solutions

The application of cuprous sulfide in a recovery of Au (III) from aqueous solutions, comprising:

• adding cuprous sulfide to aqueous solutions containing Au (III) to adsorb gold, wherein a pH value of the aqueous solutions containing Au (III) is 1-5;
• a preparation method of cuprous sulfide is as follows:
• mixing and reacting copper salt solution and thiosulfate solution in a concentration ratio of 1:2-1:10 of copper salt to thiosulfate, then performing centrifugation, and then drying to obtain the cuprous sulfide required, wherein the copper salt solution is a copper sulfate solution or a copper chloride solution, a concentration of the copper salt solution is 1-15 mmol/L, and a concentration of thiosulfate is 2-120 mmol/L.