Colloidal synthesis of AgGa(S1−xSex)2solid solution nanocrystals with composition-dependent crystal phase for efficient photocatalytic degradation of methyl violet

A series of AgGa(S 1− x Se x ) 2 nanocrystals whose crystal phase features the dependence on their composition have been synthesized, and quasi-tetragonal AgGa(S 0.7 Se 0.3 ) 2 presents the best photocatalytic efficiency of 88.48% for methyl violet.