Abstract
Graphene-Ag<sub>3</sub>PO<sub>4</sub> hybrid nanocomposite with the unique triangular morphology of Ag<sub>3</sub>PO<sub>4</sub> is successfully fabricated by simple one pot hydrothermal method. The hybrid Graphene-Ag<sub>3</sub>PO<sub>4</sub> nanocomposite photocatalyst was characterized by different advanced analytical instruments for morphological and physiochemical properties of material. The results are promising and nano Graphene-Ag<sub>3</sub>PO<sub>4</sub> hybrid composite shows improved photocatalytic movement than pure Ag<sub>3</sub>PO<sub>4</sub> for degradation of phenol. SEM shows the in-situ growth of finely distributed triangular shaped Ag<sub>3</sub>PO<sub>4</sub> nanoparticles over the surface of graphene sheets. Production of .OH radicals on the Ag<sub>3</sub>PO<sub>4</sub> surface was detected by the PL technique applying coumarin as an investigating chemical. The effect of graphene (from 10 to 50 wt %) loading in composite material on rates of degradation of phenol in aqueous solution was investigated. Among prepared catalysts an optimum 20 wt% graphene loading in hybrid nanocomposite visible light catalyst shown two times higher activity than pure Ag<sub>3</sub>PO<sub>4</sub>, further loading of graphene lowers activity.
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