Preparation of K-8[Cu(H2O)W11CrO39]@rGO-CeO2 nanocomposite and its photodegradation of Rhodamine B

摘要

K-8[Cu(H2O)W11CrO39]@rGO-CeO2 nanocomposite, a new ternary composite material, was synthesized by dipmolding method, and characterized by FT-IR, XRD, UV-Vis, N-2-adsorption, SEM and EDS. In order to evaluate photocatalytic degradation activity of this nanocomposite, Rhodamine B (RhB) solution was selected as the reaction model of photocatalytic and the influences of initial concentration, pH, catalyst dosage, and different catalysts on photocatalytic performance were investigated under ultraviolet light irradiation (lambda < 400 nm). The results show that the degradation rate of RhB reached 97.83% under the condition when initial concentration was 5 mg/L, pH 2, and the catalyst dosage at 0.10 g. The nanocomposite as catalyst for photocatalytic experiments exhibited an enhanced photocatalytic performance due to the synergic effect between heteropoly acid (HPA) and rGO-CeO2 NPs. Our present findings will have a profound effect on the use of HPA@ rGO-CeO2 nanocomposite as photocatalytic material.