Facile synthesis of ZnS-CdIn2S4-alloyed nanocrystals with tunable band gap and its photocatalytic activity

► Synthesizing high-quality colloidal ZnS-CdIn2S4 quaternary alloyed nanocrystals. ► Tuning the PL emission wavelength of ZnS-CdIn2S4 quaternary alloyed nanocrystals. ► Exhibiting high photocatalytic activity in the degradation of rhodamine B.