Oxygen-Doped Ta3N5 as a Building Block for Z-scheme CO2 Reduction with a Binuclear Ru(II) Complex Workable under a Wide Range of Visible Light

摘要

Our group has developed a hybrid photocatalyst constructed with a semiconductor and a Ru(II) binuclear complex(RuRu’), which can reduce CO2 to HCOOH by two-step photo excitation (Figure 1)1-4. However, the reported semiconductors in Z-scheme do not have the ability to effectively absorb photons with wavelength longer than 500 nm. In order to utilize >500 nm photons, we applied Ta3N5, which has ca. 600 nm absorption edge, to hybrid photocatalyst.