Preparation of visible light-driven SnS2/TiO2 nanocomposite photocatalyst for the reduction of aqueous Cr(VI)

► Composition-tunable preparation of SnS2/TiO2 nanocomposites by solvothermal method. ► Photocatalytic activities of SnS2/TiO2 nanocomposites depended on compositions. ► SnS2/TiO2-B containing 25.5 mass% TiO2 showed the highest photocatalytic activity. ► SnS2/TiO2-B showed good photocatalytic stability. ► Cr(VI) was reduced to Cr(III).