MoS2/Ag2CO3 Z-scheme system with enhancing water splitting photocatalytic activity

A novel MoS 2 /Ag 2 CO 3 Z-scheme system was synthesized by a simple chemical depositing method. The morphology and material components of MoS 2 /Ag 2 CO 3 Z-scheme system were confirmed by scanning electron microscopy and Raman spectroscopy. Photoelectrochemical (PEC) tests demonstrated that the photocurrent density of MoS 2 /Ag 2 CO 3 Z-scheme system can reach up to 13 µA/cm 2 in 0.5 M Na 2 SO 4 solution at a bias voltage of 0.5 V, which is 44 times more than pure MoS 2 , as well as 13 times higher than pure Ag 2 CO 3 . Lastly, the stability measurement of MoS 2 /Ag 2 CO 3 Z-scheme system in 0.5 M Na 2 SO 4 solution was carried out showing no obvious difference after processing 50 cycles. This work demonstrates that the MoS 2 /Ag 2 CO 3 Z-scheme system may have a great potential application in photocatalytic water splitting.