Abstract Na₂FeO₃ serves as a highly effective water-purifying agent and exhibits superior performance compared with ferrate(VI). The traditional synthesis method of ferrate(IV) requires that the conditions required for the reaction are difficult. This study focuses on the environment-friendly synthesis of green Na₂FeO₃ crystals using sodium hypochlorite as a medium via a concentration method under depressurization. Green crystallization was meticulously characterized and identified as Na₂FeO₃ using infrared spectroscopy, UV/Vis spectroscopy, Mössbauer spectroscopy, and X-ray diffraction techniques. This investigation delves into the effect of varying the concentrations of Fe₂(SO₄)₃, NaOH, NaClO, and the reaction temperature on the yield of Na₂FeO₃, which is apparently lower than that of the traditional method. This study provides important theoretical support for large-scale production of Na₂FeO₃. In addition, Na₂FeO₃ was shown to be superior to K₂FeO₄ in the treatment of oil-recovery wastewater.
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Guo et al. (2024) studied this question.
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