Abstract
CoFe2O4 was successfully prepared by calcination of bimetallic MOF precursors, and CoFe2O4/FeS2 nanocomposites were prepared by compounding it with FeS2. The catalysts were characterized for their photocatalytic ability using tetracycline (TC) as a target contaminant. The high adsorption due to the wide specific surface area of MOF-derived CoFe2O4/FeS2 led to its excellent photocatalytic performance. Furthermore, the optimum dosages of catalyst and persulfate in the M-CFO/FeS2/Na2S2O8/Vis system were determined. The variation of catalytic performance as a function of pH was also investigated. The degradation mechanism studies assisted by ESR technique and heterojunction structure analysis confirmed the Z-type heterojunction formation and generation of sulfate as well as superoxide free radicals, which played the main species responsible of TC degradation.
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