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The organic-inorganic layered solid catalyst Fe(bpy) 32+ -laponite was able to photode-grade Rhodamine B (RhB) by activation of dioxygen under visible irradiation (λ> 420 nm), while the homogeneous aqueous solution Fe(bpy) 32+ showed no photoactivity. The catalyst could be repeatedly used and retained its reactivity. The hybrid catalyst could be separated from the suspension by centrifugation...
Using 12-tungstosilicic acid (SiW 124− ) as the catalyst, rhodamine B (RhB) dye in an aerated aqueous solution can undergo an effective photocatalytic stepwise N-deethylation process under visible light irradiation, and dioxygen is reduced to hydrogen peroxide by the reduced (SiW 124− ). This provides the potential for moving polyoxometalate-based photocatalytic processes from the near-UV into the...
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