Synthesis of La1−xCaxFeO3 nanoparticle by microwave-gel method and its application in photocatalytic degradation of reactive brilliant blue X-BR

Perovskite-type composite oxide La_1-xCa_xFeO₃ was prepared by microwave irradiation with sol-gel method and characterized by IR,XRD and TEM. The photocatalytic degradation experiments of reactive brilliant blue X-BR had been carried out. The results showed that the time to form the precursor of La_1-xCa_xFeO₃ had been greatly reduced by this method. The precursor was generated with one hour by microwave irradiation. However, it was required more than 5 hours to generate the precursor in traditional method, so the efficiency of microwave heating was very obvious in the whole process. In addition, good degradation efficiency of reactive brilliant blue X-BR in aqueous solution was achieved with La_1-xCa_xFeO₃ synthesized by microwave-gel method. It indicated that the photocatalytic degradation of reactive brilliant blue X-BR was different with the different amount of Ca-doped. We obtained La_0.9Ca_0.1FeO₃ that is the best photocatalytic activities.