Taking molybdenum disulfide(MoS2)as a carrier,MoS2 loaded foam nickel-iron electrode(MoS2@Ni-Fe-Foam)is prepared through the hydrothermal method,and used for the degradation of florfenicol in water.The surface morphology and element distribution of the electrode are characterized by means of X-ray diffractometer(XRD),scanning electron microscope(SEM)and X-ray photoelectron spectrometer(XPS),and the electrochemical performance is characterized by means of cyclic voltammetry and electrochemical impedance spectroscopy.The effects of different conditions on the degradation efficiency of florfenicol are studied by using electron paramagnetic resonance detection(EPR),high performance liquid chromatography-triple quadrupole mass spectrometer,ion chromatography,and electrochemical detection.The products obtained from degradation and the degradation mechanism are analyzed.It is shown by the results that the degradation rate of florfenicol reaches the fastest,96％when the mass concentration of florfenicol is 25 mg·L-1,current density is 30 mA·cm-2,initial pH is 3,and Na2SO4 concentration is 30 mmol·L-1.It is indicated by free radical quenching experiments that·O2-plays a major role in the degradation process,followed by 1O2,while·OH has a relatively weak influence.Finally,four products obtained from degradation are identified by triple quadrupole mass spectrometer,and the degradation mechanism of florfenicol is proposed.
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