Study on the preparation of Co-doped LaFeO₃ by microwave hydrothermal method and its photocatalytic performance

Perovskite LaFeO₃ was synthesized by microwave hydrothermal method, with Co(NO₃)₂·6H₂O, Fe(NO₃)₃·9H₂O and La(NO₃)₃·H₂O as raw materials, citric acid and glucose as the complexing agent and template agent respectively. The products were characterized by XRD, SEM, TG-DSC and FT-IR. The results showed that the doping of Co was helpful to improve the photocatalystic performance of LaFeO₃, and the catalytic performance was better than that of pure LaFeO₃ sample. When the doping amount x was 0.1, the catalytic performance reached the best, and when the illumination time lasted for 150 min, the degradation rate of methyl orange solution reached 99.46 %, which was 36.51 % higher than that of pure LaFeO₃ sample.