LAUSR

Photocatalytic water splitting for hydrogen evolution is one of the most promising methods to mitigate environmental and energy-related issues. Herein, we synthesized the manganese cadmium sulfide (MnxCd1-xS) solid solution and constructed a p-n heterostructure with cobalt acid nickel (NiCo2O4 ) through a hydrothermal method. The Mn0.25Cd0.75S/NiCo2O4 composites were performed for photocatalytic hydrogen evolution reaction, and the optimal hydrogen rate of Mn0.25Cd0.75S/NiCo2O4 40 mg (MCS/NCO 40) was 61159 μmol g-1 h-1, which was about 16.3 times than that of pure Mn0.25Cd0.75S. After combining with NiCo2O4 , the light absorption scale, the separation efficiency of photo generated carriers, and the reaction kinetics were enhanced. Moreover, the band offset of MCS/NCO composites was calculated by the core level alignment method, demonstrating the formation of p-n heterostructure. And the built-in electric field from the p-n heterostructure drove the charges to transfer and facilitated to enhance the separation efficiency, which resulted in an improvement of photocatalytic performance.