Novel YBiO_3/Bi_2O_3 Heterestructured Composite with Its High Visible Light Photocatalytic Activity

摘要

A visible-light-driven YBiO_3/Bi_2O_3 composite photocatalyst was first prepared by a simple precipitation and hydrothermal method. The synthesized YBiO_3/Bi_2O_3 heterostructure was characterized by XRD, FESEM, HRTEM. As compared with pure Bi_2O_3, DRS results revealed that the composite exhibited the obvious characteristic absorption bands, which could be attributed to the interaction of Bi_2O_3 and YBiO_3 in the heterostructure. Methylene blue (MB) degradation reaction showed the heterostructured YBiO_3/Bi_2O_3 demonstrated notably higher photocatalytic activity than the individual Bi_2O_3 under visible light. A possible mechanism for the enhanced photocatalytic activity was proposed.