Fabrication of CoS2/CoMn2O4 nanocubes with boosting photocatalytic activity for hydrogen production

In the field of photocatalytic hydrogen production, the construction of p-n heterojunction was an effective strategy to solve the problem of high electron-hole pair recombination rate. In this paper, CoS 2 /CoMn 2 O 4 p-n heterojunction photocatalysts were successfully synthesized by loading CoS 2 nanoparticles on the surface of CoMn 2 O 4 nanocubes. Due to the strong light absorption performance, abundant active sites, and low photogenerated carrier recombination rate, CoS 2 /CoMn 2 O 4 exhibited significantly enhanced photocatalytic hydrogen production activity. Under light irradiation, the hydrogen production rate of CoS 2 /CoMn 2 O 4 could reach to 17.03 mmol/g within 3 h. This study provided a new idea for designing high-efficiency p-n heterojunction photocatalysts.