Coverage Ability of Silver Sulfide Nanoparticles in Sulfide Composites.

Sulfide composites ZnS/Ag2S with various contents of silver sulfide have been synthesized by chemical co‑deposition. The sizes of ZnS and Ag2S nanoparticles in ZnS/Ag2S composites containing less than 1.0 mol % Ag2S are ~4 and <3 nm, respectively. The introduction of silver sulfide in ZnS/Ag2S composites leads to the deposition of Ag2S on the surface of ZnS nanoparticles. The doping of ZnS nanoparticles by only 1 mol % Ag2S nanoparticles is enough to form a covering silver sulfide shell on the surface of ZnS nanoparticles. [ABSTRACT FROM AUTHOR]