简介：

简介：Inthisresearch,alucunaryKegginstructure,[PMo2W9O39]7-wasselectedasanefficienthomogenouscatalystfordegradationofanazodye（directblue71）andasimplemethodwasdevelopedfordegradationofDB71.ThemethodisbasedontheoxidationofazodyeinthepresenceofalucunaryKegginformofpolyoxometalates,K7[PMo2W9O39]?19H2O,asahomogenouscatalystatroomtemperature.Thereactionismonitoredspectrophotometricallybymeasuringtheabsorbanceofdyeatλ=585nm.Someparametersincludingconcentrationofcatalyst,concentrationofH2O2,pHandreactiontimewereinvestigatedandoptimized.ResultsshowthatK7[PMo2W9O39]?19H2Oismoreefficientinthepresenceofhydrogenperoxide.DegradationofdyeinthepresenceofthecatalystandH2O2couldleadtothedisappearanceapproximately65%ofdyeafter60min.ButdegradationforthesameexperimentperformedintheabsenceofcatalystorintheabsenceofH2O2was22%or5%respectively.Approximately87%azodyeshasbeeneliminatedafter90mininthepresenceofcatalyst,H2O2andoptimizeconditions(0.6g/LofK7[PMo2-W9O39H9H2O,0.08mol/Lhydrogenperoxideandroomtemperature).