Preparation Of Barium Ferrite And Its Composites And Their Photocatalytic Treatment Of Wastewater

The safe disposal of chemical waste has always received attention.Dyeing wastewater is a chemical waste that can damage the environment.However,there is no ideal safe disposal method to governance it.The photo-Fenton catalytic technology combines the advantages of photocatalysis and Fenton technology to become one of the most promising methods for treating dye wastewater.Here,we reported the preparation of Bi₂₅FeO₄₀0 and Bi₂₅FeO₄₀/GO and their Photo-Fenton degradation effect on simulated dye wastewater Rhodamine B?RhB?,in order to find a safe and effective treatment method for dyeing wastewater.The details are as follows:?1?The Bi₂₅FeO₄₀0 were prepared by hydrothermal method and characterized by SEM,EDS,XRD and UV-vis DRS.The catalytic performance of Bi₂₅FeO₄₀0 was evaluated by degrading RhB.The effects of C₆H₈O₇·H₂O on the catalytic performance of Bi₂₅FeO₄₀0 were investigated.The effect of photocatalytic conditions on the removal rate of RhB were investigated.The results showed that Bi₂₅FeO₄₀0 had excellent Photo-Fenton catalytic performance and the removal rate of 10 mg/L RhB reached75%within 120 min.?2?Graphene oxide?GO?were prepared by the modified hummer method.The composites(Bi₂₅FeO₄₀/GO)were prepared by hydrothermal method and characterized by SEM,TEM,XRD,VSM and UV-vis DRS.The catalytic performance of Bi₂₅FeO₄₀/GO was evaluated by degrading RhB.The experimental results show that the photocatalytic performance of the Bi₂₅FeO₄₀/GO is obviously enhanced compared with Bi₂₅FeO₄₀.The removal rate of 50 mg/L RhB reached 85%by Bi₂₅FeO₄₀/30GO within 120 min.?3?The Photo-Fenton degradation effect of Bi₂₅FeO₄₀0 and Bi₂₅FeO₄₀0 on methylene blue?MB?,methyl red?MR?,methyl orange?MO?and nitrophenol?PNP?simulated dye wastewater were investigated.The experimental results showed that the removal rate of 10 mg/L MB,MR,MO and PNP solution by Bi₂₅FeO₄₀0 were 100%,100%,60%and 40%in 120 min respectively.And the removal rate of 50 mg/L MB,MR,MO and PNP solutions by Bi₂₅FeO₄₀/30GO were 100%,95%,60%,and 33%in120 min respectively.Bi₂₅FeO₄₀0 and Bi₂₅FeO₄₀/GO have effective Photo-Fenton catalytic on various dye wastewaters.Bi₂₅FeO₄₀0 and Bi₂₅FeO₄₀/GO are simple and safe to prepare,can fully utilize solar energy in the degradation process,and achieve low energy consumption,environmental protection and high efficiency.It is a safe and effective method for disposal of printing and dyeing wastewater,which can protect the environment safety effectively.