Tailored design of MXene-like 2D MOF derived carbon/Fe3O4 Fenton-like catalysts towards effective removal of contaminants via size-exclusion effect

HKUST-1/ZIF-67 Nanocomposites as Heterogeneous Cu–Co-Bimetallic Fenton-like Catalysts for Efficient Removal of Methylene Blue

“…Therefore, the removal of MB by the HKUST-1/ZIF-67-7%/H 2 O 2 system in the presence of Cl – , HCO 3 – , NO 3 – , and SO 4 2– was investigated. It can be seen in Figure a–c that Cl – , HCO 3 – , and NO 3 – exhibited inhibition on the MB removal to different degrees because these anions can react with hydroxyl radicals to generate lower activity radicals, such as • ClOH – , • NO 3 , and • HCO 3 (eqs –), reducing the catalytic degradation efficiency of target pollutants. , In Figure d, SO 4 2– exhibited an insignificant effect on MB degradation. Cl − + OH • → HOCL • − • NO 3 − + OH normal• → N normalO 3 normal• + OH − HCO 3 − + OH • → normalH CO 3 • + OH − …”

“…In past decades, numerous heterogeneous catalytic materials, such as metal oxides, clays, zeolites, carbon materials, graphene oxide and metal–organic frameworks (MOFs), − have been exploited for Fenton-like degradation. Among these catalysts, MOFs constructed by the coordination of metal nodes and organic ligands, a charming class of periodic porous crystal materials, have exhibited great application potential due to the attractive properties of large specific surface area, adjustable structure, permanent porosity, and intensive interaction with pollutant molecules .…”