Description:
Artificial photosynthesis, coupling CO 2 photoreduction and water photooxidation reactions, is an important and green means to convert CO 2 . Compared with traditional multiphasic heterojunctions, monophasic photocatalysts for artificial photosynthesis are still very rare. Here we construct a crystalline overall reaction catalyst, RO-4 , by connecting reductive {Cu I 8 } and oxidative {PMo 8 V 6 O 42 } clusters with bridging oxygen atoms, which allow the photogenerated electrons to transfer easily between the redox clusters. Under light irradiation, RO-4 can achieve efficient artificial photosynthesis with a high CO production activity of 20.06 μmol g -1 h -1 (>99.5% selectivity) along with O 2 release. Furthermore, in situ DRIFTS and DFT calculations uncover the related reaction intermediates and CO 2 photoreduction mechanism. This work validates a feasible strategy to engineer monophasic crystalline RO photocatalysts for efficient artificial photosynthetic overall reaction