A series of MnxCd1-xS (0 < x < 1, marked as MCS-x) photocatalysts were synthesized by a facile hydrothermal method. The Mn-Cd-S solid solution and impurity phase of alpha-MnS would coexist in the as-prepared products once x >= 0.3. Among these photocatalysts, the MCS-0.5 sample exhibited the highest photocatalytic H-2 evolution rate of 5.540 mmol.g(-1).h(-1) with the lactic acid as sacrificial reagent, which may be due to the joint action of the formation of Mn-Cd-S solid solution promoting conduction band potential to enhance the reduction ability and Mn5 as the recombination center of photog...
