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Photocatalytic Degradation of Rhodamine B Dye over Novel Porous TiO2-SnO2Nanocomposites Prepared by Hydrothermal Method

机译:用水热法制备新型多孔TiO2-SNO2NANONOCHININE的罗丹明B染料的光催化降解

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摘要

The photocatalytic degradation of Rhodamine B dye was successfully carried out under UV irradiation over porous TiO2-SnO2 nanocomposites with various molar ratios of Ti/Sn (4–12) synthesized by hydrothermal method using polystyrene microspheres as template. The combination of TiO2 with SnO2 can obtain high quantum yield of TiO2, and then achieve the high photocatalytic activity. And its porous structure can provide large surface area, leading to more adsorption and fast transfer of dye pollutant. Structural and textural features of the samples were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and N2 sorption techniques. Both adsorption and UV irradiation contribute to decolorization of about 100% of Rhodamine B dye over the sample TiSn10 after 30 min of the photocatalytic reaction, while the decomposition of Rhodamine B dye is only 62% over pure titania (Degussa P25).
机译:通过使用聚苯乙烯微球作为模板,在多孔TiO2-SnO2纳米复合材料下成功地在多孔TiO 2-SnO2纳米复合材料下成功地进行了罗丹明B染料的光催化降解。使用聚苯乙烯微球作为模板合成的Ti / Sn(4-12)的各种摩尔比。 TiO 2与SnO2的组合可以获得高量子产率的TiO 2,然后达到高光催化活性。其多孔结构可以提供大的表面积,导致染料污染物的吸附和快速转移。通过X射线衍射(XRD),透射电子显微镜(TEM)和N2吸附技术来研究样品的结构和纹理特征。在光催化反应30分钟后,吸附和紫外线照射均有助于在样品TISN10上脱色约100%的罗丹明B染料,而罗丹明B染料的分解仅为纯二氧化钛(Degussa P25)的62%。

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