CdS Nanowires Decorated with Ultrathin MoS2 Nanosheets as an Efficient Photocatalyst for Hydrogen Evolution

Abstract CdS nanowires decorated with ultrathin MoS 2 nanosheets were synthesized for the first time by ultrasonic exfoliation by using dimethylformamide as the dispersing agent. An excellent hydrogen evolution rate of 1914 μmol h −1 (20 mg catalyst) under visible‐light irradiation ( λ ≥400 nm, ≈154 mW cm −1 ) and an apparent quantum yield of 46.9 % at λ =420 nm were achieved over the MoS 2 /CdS composite. The presence of ultrathin MoS 2 nanosheets (rich in active edge sites) on the CdS surface promotes the separation of photogenerated charge carriers and facilitates the surface processes of photocatalytic hydrogen evolution.