In suit grown visible light response Z-scheme AgI/Ag/AgVO3 hybrid nanorods with enhanced photocatalytic activity and stability

AgVO 3 and AgI have attracted great interest in environmental remediation. Aiming at enhancing the catalytic activity and stability of AgVO 3 . Visible light response Z-scheme AgI/Ag/AgVO 3 hybrid nanorods were prepared by in situ reduction and ion exchange grown. The results of characterization and experiment showed that obtained hybrid material are primarily composed of AgVO 3 nanorods, whose surface were closely attached to AgI and Ag particles. Compared with AgVO 3 and Ag/AgVO 3 , the absorbance of Z-scheme AgI/Ag/AgVO 3 hybrid nanorods in the visible light region is dramatically enhanced. The degradation efficiency of sample is five times of that of AgVO 3 and four times of that of Ag/AgVO 3 , respectively. And the degradation efficiency still keep 90% after the fourth repeat experiment. The trapping experiments of active species confirmed that the contribution of the degradation for AO-II is mainly attributed to h + and ∙O 2 − . The efficient photocatalytic activity can be explained by Z-type mechanism, which promote effective separation of photogenerated charges. This study provides an idea for the design of efficient visible light photocatalysts .