Facile Preparation of AgI/Bi 2 MoO 6 Heterostructured Photocatalysts with Enhanced Photocatalytic Activity

Bi 2 MoO 6 microspheres were modified by loading AgI nanoparticles on their surfaces by a facile deposition/precipitation approach. The as‐prepared AgI/Bi 2 MoO 6 heterostructured photocatalysts exhibit much higher photocatalytic activities for the degradation of rhodamine B (RhB) and bisphenol A (BPA) than P25, AgI, Bi 2 MoO 6 , and a mechanical mixture of AgI and Bi 2 MoO 6 . The composite with 20 wt.‐% AgI shows the highest degradation efficiency. The enhanced photocatalytic properties of the AgI/Bi 2 MoO 6 heterostructures are attributed to their larger surface areas, extended absorption in the visible‐light range, and efficient separation of photoinduced carriers at the interfaces of the AgI and Bi 2 MoO 6 nanocrystals. The AgI/Bi 2 MoO 6 photocatalyst is stable during the catalytic reaction and can be used repeatedly. Moreover, O 2 · – and h + were verified as the main active species in the decomposition of organic pollutants. A possible photocatalytic mechanism is also proposed.