Mn doping enhances the photocatalytic performance of Bi2Fe4O9 photocatalyst

Bi2Fe4((1-x))Mn4xO9 photocatalyst was prepared by the coprecipitation-hydrothermal method. After doping Mn2+, the photogenerated carrier recombination efficiency of Bi2Fe4O9 was reduced, the electron transfer efficiency was accelerated, and had a good degradation effect for RhB. When Mn2+ doping was 6%, the degradation effect of organic dyes was very good, reaching 82.29%, and the reaction rate constant was 0.00665min(-1), which was 2.5 times that of Bi2Fe4O9. The main active component of the dye degradation process was center dot OH, which was consistent with that of Bi2Fe4O9.

Automated summary

The Bi2Fe4((1-x))Mn4xO9 photocatalyst was prepared through coprecipitation-hydrothermal method. Doping Mn2+ reduced the photogenerated carrier recombination efficiency of Bi2Fe4O9, accelerated the electron transfer efficiency, and showed good degradation effect for RhB. When Mn2+ doping was 6%, the degradation effect for organic dyes was excellent, reaching 82.29%, and the reaction rate constant was 0.00665min(-1), which was 2.5 times higher than that of Bi2Fe4O9. The main active component in the dye degradation process was center dot OH, consistent with Bi2Fe4O9.