A highly efficient hybrid ZnCdS-rGO/MoS2 heterostructure is successfully synthesized through a hot injection method and control loading of rGO/MoS2. The synergism provides an unprecedently high H2-generation rate of 193.4 mmol H2 g-1 h-1 from water under full arc solar radiation and MeOH production (5.26 mmol g-1 h-1, AQY of 14.6% at λ = 420 ± 20 nm) from CO2 reduction.