Enhanced visible light photocatalytic properties of AgNbO₃/AgSbO₃ composites

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• 作者：Guoqiang Li^a ; ^b ; ^{gqli1980@gmail.com} ; Ying Bai^a ; ^b ; W.F. Zhang^a ; ^b ; ^{wfzhang@henu.edu.cn} ; Haitao Zhang^c
• 关键词：Composite materials ; Oxides ; Electron microscopy ; Optical properties
• 刊名：Materials Chemistry and Physics
• 出版年：2013
• 出版时间：15 May, 2013
• 年：2013
• 卷：139
• 期：2-3
• 页码：1009-1013
• 全文大小：779 K

文摘

(AgNbO₃)_1?x(AgSbO₃)_x composites with the different molar ratios of AgSbO₃ to AgNbO₃ were prepared by a solid state reaction method. Composition dependence on the structure, optical properties and morphology was investigated by X-ray diffractometer, Raman spectroscopy, UV-vis spectroscopy and scanning electron microscope. The Rhodamine B (RhB) decomposition under visible light irradiation was used to estimate the photocatalytic activity. The composites show the significant enhancement in photocatalytic property, and the photocatalytic activities of composites exhibit a strong dependency on the amount of AgSbO₃. The highest photocatalytic activity is observed on the composite (AgNbO₃)_0.2(AgSbO₃)_0.8, which is eighty- and ten-folds higher than that of AgNbO₃ and AgSbO₃, respectively.