ActiveFe-andMn-loadedMCM-41(Fe–Mn/MCM-41),whichwassynthesizedviaahydrothermalreactionfollowedbyimpregnation,isusedintheheterogeneousFentonreactiontodegrademethylorange(MO)inaqueoussolution.ThesynthesizedsampleswerecharacterizedbyX-raydiffraction,scanningelectronmicroscopy,transmissionelectronmicroscopy,N2adsorption–desorptionisothermanalysis,Fouriertransforminfraredspectroscopy,andX-rayphotoelectronspectroscopy.ComparedwithFe/MCM-41andMn/MCM-41,Fe–Mn/MCM-41showedhigheractivityforMOdegradationandmineralization.Effectsofvariousoperatingparameters,suchaspH,Mncontent,andH2O2dosage,onthedegradationprocessweresubsequentlyinvestigated.ResultsofexperimentsontheeffectofradicalscavengersrevealedthatthedegradationofMOcouldbeattributedtooxidationbyHO·.ThesynergyofFeandMnspeciesintheFentonoxidationprocesswasalsoexplained.
