▎ 摘　　要

In this study, manganese oxide nanoparticles/reduced graphene oxide(MnOxNPs/rGO) was used as support for strong immobilization of flavin adenine dinucleotide(FAD). A thin film of rGO cast on the electrode surface, followed by performing electrodeposition of MnOxNPs at applied constant potential of +1.4V vs. Ag/AgCl for 200s. Finally, FAD was electrodeposited onto the rGO/MnOxNPs film by potential cycling between 1.0 to -1.0V in solution containing 1mgml(-1) FAD. Electrochemical properties and catalytic activity of GCE/rGO-MnOxNPs/FAD toward persulfate (S2O82-) reduction was investigated. Under optimized condition, the concentration calibration range, detection limit, and sensitivity were 0.1M-2mM, 90nM and 125.8nA/M, respectively, using hydrodynamic amperometry technique.