Preparation and Activation of Manganese Oxide Catalysts for Persulfate-mediated Degradation of Bisphenol A
To degrade and remove bisphenol A(BPA)contaminants in water through advanced oxidation technology,different manganese oxides were selected as catalysts to study the reaction process,active species,degradation efficiency,and mechanism of the catalytic degradation of organic pollutant bisphenol A by persulfate activated by manganese oxides.The structural composition and morphological characteristics of the solid catalytic materials synthesized with different valence manganese oxides were characterized by X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FT-IR).The degradation process of BPA by the catalyst was studied,and the degradation process was inferred by controlling the amount of catalyst,PMS,and BPA concentration.The results show that the performance of Mn2O3 in activating PMS to degrade BPA is better than that of MnO2.The optimal oxidative degradation conditions were obtained by controlling the amounts of the reactants,with Mn2O3 at 0.20 g/L and PMS at 0.031 2 g/L.Advanced oxides were formed in the manganese oxide-activated persulfate system,and the degradation performance of BPA was excellent.
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