Preparation of Monodisperse ZnS Nanoparticles by Size Selective Photocorrosion

The size-distribution of ZnS nanoparticles (Q-ZnS) of 4.2 ± 0.6 nm was narrowed to 2.6 ± 0.2 nm by sequential irradiation with monochromatic light of 313 nm, 303 nm, and 297 nm to an air-saturated ZnS colloidal solution in the presence of sodium hexametaphosphate as a stabilizer and methylviologen as an electron acceptor.