Studies On The Synthesis And Activity Evaluation Of Ag₃PO₄Visible-light-driven Photocatalyst

has an indirect band gap and a strong oxidation of photoexcited holes in the VB, and the mobility of the electrons is fairly higher than that of the holes, which facilitates the separation of electron-hole pairs partly due to the form of the delocalized π*antibonding states in the CB. In addition, the inductive effect of PO43-facilitates the e-/h+separation, which plays an important role in its excellent photocatalytic activity. However, the novel morphology is a challenge to Ag3PO4.In this paper, we synthesized Ag3PO4powder using saturation of AgAc, PVP, sodium deoxycholate, and studied the influence of synthesis conditions on the morphologies and properties. Various test methods and analytic tools, such as XRD, SEM, UV-vis, XPS, FTIR and BET were applied to characterize the microstructure and phase composition.Synthesis of nano Ag3PO4:By a simple ion exchange way, we changed the the reaction concentration and successfully prepared the different shape nano Ag3PO4. Results showed that all samples had absorption in the visible light area and owned excellent optical catalytic performance. The complete decomposition time of MO and RhB for sphere was5min.Fabrication of Ag3PO4dendrites:We developed a simple route for morphology-controllable synthesis of Ag3PO4dendrites. The morphology of Ag3PO4dendrites was tunable by the capping reagent sodium deoxycholate. Results showed that it owned excellent optical catalytic performance, which was due to the large specific surface area and the low combination of electron-hole. The complete decomposition time of MO was7min, and which of RhB was4min.Synthesis of Ag3PO4nanosphere:Ag3PO4was perparated using PVP, different concentration of alcohol as solvent. The nanosphere was composed in80%ethanol, owning excellent optical catalytic performance.Fabrication Ag3PO4/Zn3(PO4)2composite:By a simple ion exchange way, the Ag3PO4/Zn3(PO4)2composite was preparated, morphology of which was peony shape, effected by Zn3(PO4)2and AgAc. Results showed that it had excellent optical catalytic performance. The complete decomposition time of RhB was60min.Synthesis of graphene/Ag3PO4: The graphene/Ag3PO4composition was successfully gained in the water solution. Results showed that both samples fit together nicely. The composite owns excellent visible catalytic performance.