Photocatalytic seawater splitting for H₂ production is extremely attractive in solar-to-fuel conversion areas toward achieving clean and renewable energy. In this study, we design a low-cost and robust Fe₂O₃/C-TiO₂ Z-scheme system by applying Fe₂O₃ nanosheets as electron donor and C-doped TiO₂ nanosheets as H₂ generation photocatalysts, achieving highly efficient seawater splitting for H₂ evolution without any sacrificial reagents. The Fe₂O₃/C-TiO₂ Z-scheme system shows remarkable catalytic performance and high stability for H₂ evolution in seawater. Under visible light illumination, the H₂ generation rate reach 170.8 μmol g⁻¹ h¹ and remain unchanged in a 24 h cyclic test. This study may open avenues to designing low-price and stable photocatalysts for H₂ extraction from seawater in future.

用于生产H _2的光催化海水分离技术在太阳能到燃料的转化领域对于实现清洁和可再生能源极为有吸引力。在这项研究中，我们通过应用Fe ₂ O ₃纳米片作为电子供体，并使用C掺杂的TiO ₂纳米片作为H ₂代光催化剂，设计了一种低成本且坚固的Fe ₂ O ₃ / C-TiO ₂ Z方案体系。无需任何牺牲试剂即可高效分解H _2的海水。Fe ₂ O ₃ / C-TiO ₂ Z -方案体系对海水中H _2的释放显示出显着的催化性能和高稳定性。在可见光照射下，H ₂生成速率达到170.8μmolg ^-1  h ^1，并且在24 h循环测试中保持不变。这项研究可能为将来设计用于从海水中提取H ₂的低价且稳定的光催化剂开辟道路。