Synthesis of doped and undoped Bi1-xMxFeO3 porous networks (M= La, Gd, Nd; x= 0, 0.03, 0.05, 0.10) with enhanced visible-light photocatalytic activity

Abstract:

Doped and undoped Bi1-xMxFeO3 porous networks (M = La, Gd, Nd; x = 0, 0.03, 0.05, 0.10) were synthesized by a facile glycine-nitrate combustion technique. The samples were analyzed by X-ray powder diffraction, scanning electron microscopy and UV–vis diffuse reflectance spectroscopy. For the first time, these Bi1-xMxFeO3 porous networks were applied in photocatalytic degradation reactions in aqueous solution under visible light irradiation using the dye Rhodamine B as a model. Our studies reveal that the type of rare-earth dopant as well as its concentration has no impact on phase purity and particle morphology and that the dopant significantly affects the optical absorption properties: the micrometer sized porous networks exhibited band gap values and optical absorption properties similar to those reported for nanometer sized samples. Furthermore, all samples showed enhanced photocatalytic …

Año de publicación:

2021

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