Metal ion doped copper sulfide nano-particles and preparation method and application thereof

The invention discloses metal ion doped copper sulfide nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of material modification. The preparation method comprises the following steps: (1) dissolving a sulfur source in a solvent to obtain a mixed solution of the sulfur source and the solvent; (2) adding copper salt into a mixed solution of a sulfur source and a solvent, and uniformly mixing to obtain a yellow solution; (3) adding metal ion salt into the yellow solution, and uniformly mixing to obtain a brown solution; and (4) carrying out hydrothermal reaction on the brown solution, after the hydrothermal reaction is finished, removing precipitates, and carrying out centrifugation, washing and drying treatment to obtain the metal ion doped copper sulfide nanoparticles which can be used as a photocatalyst to be applied to degradation of organic pollutants. The photocatalytic effect and stability of copper sulfide can be remarkably improved by doping zinc