fig5

Figure 5. (A) Schematic diagram presenting the principle of photocatalytic hydrogen production; (B) Energy band diagram and charger transfer behavior of meso-TiO₂/Cu₃Mo₂O₉/CuO. This figure is quoted with permission from Chen et al.^[30]; (C) Schematic diagram elucidating the photocatalytic H₂ production process over TiO₂/(MoP/CdS). This figure is quoted with permission from Wang et al.^[32]; (D) Mechanism diagram of HOFs@Fe³⁺ for photocatalytic H₂ production. This figure is quoted with permission from Yang et al.^[31]; (E) Schematic diagram of photocatalytic H₂ evolution over ZrC@ZIS core-shell heterostructure upon near-infrared light (NIR) irradiation. This figure is quoted with permission from Shi et al.^[29]; (F) Mechanism of photocatalytic H₂ generation over NCDs/CdS. This figure is quoted with permission from Shi et al.^[25]; (G) Schematic representation of the structure-performance correlation in MC-CN. This figure is quoted with permission from You et al.^[28]. MC-CN: Monomolecular carbohydrazide-carbon nitride; ZIS: ZnIn₂S₄.