Mingliang Wang

The rational design and assembly of heterogeneous photocatalyst nanostructures represent an advanced strategy for the efficient conversion of solar energy into chemical energy. In this study, a hollow core–shell cube 45%‐Cu_2−xS@Bi₄O₅I₂ S‐scheme heterojunction was constructed using an in situ growth deposition method. Owing to its rough surface and hollow polyhedron structure, this unique catalyst exhibits a large specific surface area and multidimensional active sites. Under the synergistic effects of band excitation and plasmon resonance, 45%‐Cu_2−xS@Bi₄O₅I₂ demonstrates broad spectral absorption ranging from ultraviolet to near‐infrared light, along with strong photothermal conversion performance. Simultaneously, the S‐scheme heterojunction structure provides a multichannel charge transfer pathway, facilitating efficient charge separation and inhibiting electron–hole pair recombination driven by the built‐in electric field. Furthermore, the photothermal effect generated by Cu_2−xS further enhances charge transfer and surface reaction kinetics, enabling 45%‐Cu_2−xS@Bi₄O₅I₂ to achieve an excellent hydrogen evolution yield of 2765.3 μmol g⁻¹ h⁻¹ (28.3 times that of Bi₄O₅I₂) while maintaining good stability. This work offers a novel approach for the generation of renewable hydrogen energy and the design of highly active photocatalysts.

Directed enhancement of cymoxanil fungicide chemical stability through a cocrystallization strategy.