Novel visible-light-driven Ag2CrO4/SnS2 composites are synthesized.
Ag2CrO4/SnS2 exhibits higher photocatalytic activity than pure Ag2CrO4 and SnS2.
Ag2CrO4/SnS2 exhibits excellent stability for the photodegradation of MO.
The possible photocatalytic mechanism was discussed in detail.