▎ 摘　　要

Iron/graphene oxide (GO) - MCM (FGM), a synthesized catalyst prepared via solvothermal method was characterized and applied in persulfate (PS) activation. FGM possessed abundant trivalent iron and defect sites which participated PS activation and contributed to the removal of levofloxacin hydrochloride (LH). LH removal efficiency reached 97% within 10 min in FGM/PS system via radical and non-radical pathways under mild conditions (20 degrees C and neutral condition), and the mechanisms of removing LH, mainly SO4 center dot- and center dot OH generations during PS activation, depended on pH and temperature. SO4 center dot- and center dot OH were dominated at strong acid condition and at weak acid/alkaline condition, respectively. The generation of center dot OH negatively correlated with temperature, but SO4 center dot- generation as a function of temperature nonlinearly changed. Except adsorption, the other non-radical pathway such as defect sites in GO of FGM might also take part in LH removal. FGM under diverse conditions presented great stability while few release of free iron ions had no influence on the LH removal. Thus, a new synthesized catalyst with distinguished catalytic ability and excellent stability has been prepared for efficiently treating organic pollutants in water.