Degradation of Basic Fuchsine under Visible-Light on Fe3+Doped Bi3NbO7
Fe3+doped Bi3NbO7 photocatalyst was prepared by coprecipitation method.The prepared samples were characterized by XRD,SEM,TEM and BET.The characterization results showed that Fe3+entered into the lattice of Bi3NbO7,forming a uniform phase.The sample exhibits cubic and lamellate shape.The photocatalytic activity test results showed that the prepared material gave a better visible light driven photocatalytic activity for basic fuchsine,that the degradation percentage of 94.7％can be obtained under the condition as the initiate fuchsine concentration of 5 mg/L,photocatalyst dosage of 1 g/L and ir-radiation time of 240 min.In the photocatalytic reaction process,·OH and·O2-are the main active radi-cals,and the effect of adsorption cannot be ignored.Oxygen vacancy in the Fe3+doped Bi3NbO7 benefits for the improvment of the photocatalytic activity under visible-light.
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