In this work, an Au modified Bi₂O₃-TiO₂ (Au/Bi₂O₃-TiO₂) hybrid is developed as a simple and effective photocatalyst for the production of H₂O₂. The modification of Bi₂O₃ improves the charge separation of photocatalyst and significantly enhances the photocatalytic activity of Au/TiO₂ for H₂O₂ production. In-situ electron spin resonance studies shows stepwise single-electron oxygen reduction reaction (ORR) on the Au/Bi₂O₃-TiO₂ photocatalyst for the production of H₂O₂. This work demonstrates the importance of heterojunction structure photocatalyst for improved performance of TiO₂ in order to produce concentrated H₂O₂.

在这项工作中，Au改性的Bi ₂ O ₃ -TiO ₂（Au / Bi ₂ O ₃ -TiO ₂）杂化物被开发为一种简单有效的用于生产H ₂ O _2的光催化剂。Bi ₂ O ₃的改性改善了光催化剂的电荷分离，并显着增强了Au / TiO ₂对H ₂ O _2的生产的光催化活性。原位电子自旋共振研究表明Au / Bi ₂ O ₃ -TiO ₂上的逐步单电子氧还原反应（ORR）用于生产H ₂ O _2的光催化剂。这项工作证明了异质结结构光催化剂对于提高TiO ₂性能以生产浓H ₂ O ₂的重要性。