Abstract:Organic pollution is one of the most important issues, which can be efficiently handled by photocatalytic degradation of organic pollutants. Bismuth ferrite is found to be the only single-phase multiferroic material with ferroelectric and ferromagnetic properties at room temperature. It has narrow-band gap and good visible light absorption performance, which converts organic pollution into non-toxic and harmless forms, or completely degraded to CO2 and H2O. Therefore, BiFeO3 has a broad application prospect in the field of photocatalysis due to its excellent performance, which attracts much attention of the researchers. In this review, the common preparation methods of BiFeO3 photocatalytic materials and their applications in wastewater treatment are summarized. The improvement of BiFeO3 catalysts (ions doping, semiconductor recombination, noble metal deposition) and the optimization of reaction conditions (for example light source, pH, catalyst concentration, etc.) in improving its photocatalytic effect are also reviewed. Finally, the problems of BiFeO3 materials in wastewater treatment are summarized and the outlook for future research is proposed.