The interfacial design and defect engineering are of huge interest for achieving efficient photocatalytic H₂ evolution using solar energy. In this work, we successfully integrated the Schottky junction and S-scheme heterojunction with oxygen vacancies to achieve the defective Ru/SrTiO₃/TiO₂ hybrid photocatalyst. As verified by experimental studies, these junctions with defects fully exploit the benefits of interfacial charge separation and transport. It is demonstrated that the designed hybrid exhibits dramatically enhanced photocatalytic H₂ evolution rate with respect to pristine SrTiO₃, high apparent quantum efficiency at 365 nm irradiation as well as excellent stability. Furthermore, the Ru/SrTiO₃/TiO₂ based device photocatalyst also displays the excellent H₂ evolution activity with easy recycle nature. This finding provides a newfangled thought for developing highly efficient hybrid materials for photocatalytic H₂ evolution.

界面设计和缺陷工程对于利用太阳能实现有效的光催化H ₂放出具有极大的兴趣。在这项工作中，我们成功地将肖特基结和S型异质结与氧空位相结合，以实现有缺陷的Ru / SrTiO ₃ / TiO ₂杂化光催化剂。正如实验研究所证实的那样，这些带有缺陷的连接点充分利用了界面电荷分离和传输的好处。结果表明，所设计的杂化体相对于原始SrTiO ₃表现出显着提高的光催化H ₂释放速率，在365 nm辐照下具有较高的表观量子效率以及出色的稳定性。此外，Ru / SrTiO基于₃ / TiO ₂的器件光催化剂还具有出色的H ₂析出活性和易于回收的特性。这一发现为开发用于光催化H ₂释放的高效杂化材料提供了新思路。