High-performance pure and Fe3+-ion doped ZnS quantum dots as green nanophotocatalysts for the removal of malachite green under UV-light irradiation

► Synthesis of ultra-small ZnS and ZnS:Fe QDs in aqueous media. ► Characterization of QDs by TEM, XRD, FAAS and UV-vis absorption techniques. ► The new report on the photocatalytic behavior of QDs on removal of MG. ► Effective degrade of dye by novel modified QDs up to 98%.