Photocatalytic Activity of M(M=Mg, Ca, Sr, Ba, Ni)Nb2O6

doi:10.3724/SP.J.1077.2007.00922

Abstract

Abstract: Powder samples, NiNb₂O₆, MgNb₂O₆, CaNb₂O₆, SrNb₂O₆, BaNb₂O₆, were prepared by solid state reaction. Crystal structure, optical and powder morphology of the samples were analyzed by XRD, UV-Vis diffuse reflectance spectra and SEM. The photocatalytic properties were investigated by degrading rhodamine B under UV irradiation. The substitution of alkaline-earth metals for Ni improves the photocatalytic activity of MNb2O6. After UV irradiation for 10h, the concentrations of RhB/SrNb₂O₆ suspension and RhB/BaNb₂O₆ suspension are degraded to 21% and 37%, respectively.

Key words: niobate, photocatalysis, rhodamine B degradation, alkaline-earth metals

CLC Number:

TN383

AN Hui-Zhong,WANG Cong,WANG Tian-Min,HAO Wei-Chang. Photocatalytic Activity of M(M=Mg, Ca, Sr, Ba, Ni)Nb₂O₆[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00922.

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Photocatalytic Activity of M(M=Mg, Ca, Sr, Ba, Ni)Nb₂O₆

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