Magnetically recoverable Ag/Bi2Fe4O9 nanoparticles as a visible-light-driven photocatalyst

This paper reports magnetically recoverable Ag/Bi2Fe4O9 nanoparticles (BFO NPs) using as a photoexcited catalyst. The Ag NPs are uniformly distributed on the surface of BFO NPs. Compared to BFO NPs, the decomposition rate of methyl orange for Ag/BFO NPs under the visible-light is greatly enhanced due to the high surface plasmon resonance and electron conductivities of Ag NPs. Moreover, Ag/BFO NPs have a higher saturation magnetization than BFO NPs, which makes them can be collected easily under magnetic fields. Therefore, Ag/BFO NPs are potential recoverable visible-light-driven photocatalyst for environmental pollutants degradation.