Abstract
AgVO3 and AgI have attracted great interest in environmental remediation. Aiming at enhancing the catalytic activity and stability of AgVO3. Visible light response Z-scheme AgI/Ag/AgVO3 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 AgVO3 nanorods, whose surface were closely attached to AgI and Ag particles. Compared with AgVO3 and Ag/AgVO3, the absorbance of Z-scheme AgI/Ag/AgVO3 hybrid nanorods in the visible light region is dramatically enhanced. The degradation efficiency of sample is five times of that of AgVO3 and four times of that of Ag/AgVO3, 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 ∙O2−. 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.
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