Synthesis and photocatalytic evaluation of Bi25FeO40 under visible light irradiation
Abstract
In this study, the crystalline structure, photocatalytic activity and magnetic properties of Bi25FeO40 were discussed. The Bi25FeO40 powder was produced by high-energy ball milling and annealing at 700°C. The crystal structure was analyzed by X ray diffraction, showing a Bi25FeO40 phase with high purity (100 %) and cubic crystalline structure that belongs to I23 space group. The photocatalytic activity was evaluated measuring the degradation efficiency of crystal violet (CV) dye under visible light irradiation (420-780 nm), showing a degradation efficiency of 34% after 210 minutes of light irradiation, which suggest that Bi25FeO40 could operate under solar light. According to magnetic characterization, it reveals a ferrimagnetic behavior with a magnetization of 0.054 emu/g. It confirms the synthesis of a magnetically recoverable photocatalyst.
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