fig7

Figure 7. Emerging semiconductor photocatalysts and their hybrid for highly-efficient hydrogen production. (A) Schematic for synthesizing the SrTiO₃/Ti₃C₂ (STO/TC) heterostructures; (B) Mechanism for photocatalytic hydrogen evolution over STO/TC Schottky heterojunction; (C) Efficient photocatalytic hydrogen evolution by STO/TC heterostructures. TC-36 is the Ti₃C₂ sample synthesized by rotating the reaction system (80 °C) at 600 rpm for 36 h. These three figures are quoted with permission from Zhang et al. Copyright (2023) Elsevier^[81]; (D) Schematic diagram of Ni₂P-SNO/CdS-D nanocomposite; (E) Comparison of photocatalytic H₂ generation over a series of photocatalysts. These two figures are quoted with permission from Hu et al. Copyright (2020) Elsevier B.V^[85]. Ni₂P-SNO/CdS-D: Ni₂P-SnNb₂O₆/CdS-diethylenetriamine.