“…It can also promote the energy revolution, achieve sustainable development, and has a great role in promoting the construction of a low-carbon society. So far, a large number of semiconductor materials, including oxides, sulfides, and nitrogen oxides, have been used for photocatalytic hydrogen production from water reduction. , Among these, metal sulfides, such as Mn x Cd 1– x S, have shown promising hydrogen production performances because of wide solar response and suitable band edge positions . However, the H 2 evolution rate of Mn x Cd 1– x S is still unsatisfied because of the rapid recombination of photogenerated electron–hole pairs. , To solve these problems, several strategies, including metal doping, cocatalyst modification, , morphological tailoring, and construction of a heterojunction, − have been developed to further improve the photoactivity of Mn x Cd 1– x S. Among these approaches, cocatalyst modification and construction of a heterojunction can be considered as ideal approaches because of the accelerated charge separation.…”