Nano CuS/MoS2 composite catalysts were fabricated by chemically dealloying amorphous Ti30Cu70-xMox(x = 1, 2, 3 at. %) ribbons in acid solution. The composite catalysts presented as globular clusters composed of a large number of intersecting 20-40 nm-thick nanosheets, which was attributed to laminated materials aggregating on the surface of the product during dealloying. Compared with other alloy compositions, when x = 3, the dealloying product exhibited excellent photocatalytic activity and cycling stability for the degradation of methylene blue. These characteristics are mainly due to the large specific surface (similar to 31.12 m(2) g(-1)) of the product and low recombination of photogenerated electrons and holes on its surface.