Photocatalytic behaviour of Bi2MO6 polymetalates for rhodamine B degradation
Photocatalytic behaviour of Bi2MO6 polymetalates for rhodamine B degradation
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DOI：
10.1016/j.cattod.2008.09.011
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发表时间：
2009-05
期刊：
影响因子：
5.3
通讯作者：
C. Belver;C. Adán;M. Fernández-García
中科院分区：
文献类型：
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作者：
C. Belver;C. Adán;M. Fernández-García
采用柠檬酸盐配合物法成功合成了Bi2MO6(M=W或Mo)。通过 X 射线衍射、Brunauer-Emmet-Teller 表面积和紫外-可见光谱对样品进行了表征。该固体以正交 Aurivilius 型结构结晶，并表现出最佳的光吸收性能，可用作光催化剂。利用罗丹明 B 在不同照射波长下的降解情况，系统地研究了样品的光活性能力。研究了固体的行为和光降解机制随所用照射光（紫外线或可见光）的变化。直接太阳光也被用作辐照源，表明这种类型的结构可以推动开发最好的光催化剂以利用太阳光降解废水的合理策略。
Bi2MO6(M=W or Mo) have been successfully synthesized using the citrate complex method. The samples were characterized by X-ray diffraction, Brunauer–Emmet–Teller surface area and UV–vis spectroscopy. The solids crystallized in the orthorhombic Aurivillius-type structure and display optimum light absorption properties to be used as photocatalysts. The photoactivity power of the samples was investigated systematically using the rhodamine B degradation under different irradiation wavelengths. The behaviour of the solids and the photodegradation mechanism was studied as a function of the irradiation light (UV or visible) employed. Direct solar light was also employed as irradiation source showing that this type of structures could drive to a plausible strategy for developing finest photocatalyst to degrade wastewaters by using solar light.