Preparation Of Fe-MIL-53(Fe) And Its Application In Wastewater Treatment

In order to effectively improve the photocatalytic activity of metal organic framework MIL-53(Fe)materials,a series of ferrous-doped MIL-53(Fe)composite material(Fe2+-MIL-53(Fe))nith different Fe2+ concentration were prepared by solvothermal method and applied in advanced oxidation treatment of printing and dyeing wastewater using methylene blue(MB)as a target.The degradation performance of ferrous ion doping amount and photocatalysis,Fenton and Photo-Fenton reaction system on the treatment of methylene blue(MB)solution were studied and compared,the treatment effect of the photocatalytic materials such as MIL-53(Fe),Ti2O3 and C3N4 were compared and tested to further evaluate the effect of Fe2+-MIL-53(Fe)treatment.The results show that in the photocatalytic reaction system,Fe2+-MIL-53(Fe)has the best effect compared with other photocatalytic materials when the ferrous ion doping amount is 10%.Compared with photocatalytic and Fentoncatalytic systems,the photo-Fenton combination system is the optimal system.When the dosage of Fe2+-MIL-53(Fe)was 0.4 g/L,the amount of hydrogen peroxide was 4 mM,and the reaction time was 2 h,the degradation rate of 10 mg/L MB solution was 99.7%.Studies have shown that by appropriate amount ferrous ion doping of MIL-53(Fe),its photocatalytic oxidation reaction activity can be effectively improved.