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首页> 外文期刊>RSC Advances >TiO2 nanocrystals with the {001} and {101} facets co-exposed with MIL-100(Fe): an egg-like composite nanomaterial for efficient visible light-driven photocatalysis
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TiO2 nanocrystals with the {001} and {101} facets co-exposed with MIL-100(Fe): an egg-like composite nanomaterial for efficient visible light-driven photocatalysis

机译：用{001}和{101}的TiO2纳米晶体与MIL-100（Fe）共同暴露：一种蛋形复合纳米材料，用于高效可见光触发光催化

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The exposure of a specific crystal face to a specific composition or a suitable carrier composition with synergistic effects can effectively improve the photocatalytic activity of the material and enhance its practical value. For choosing an ideal carrier, the primary factor is a large specific surface area. Herein, by using MIL-100(Fe) as the carrier, an egg-like TiO2/MIL-100(Fe) composite was successfully prepared, for the first time, via a facile two-pot hydrothermal method. XRD, SEM, TEM and other characterization methods showed that when the molar ratio of Ti : Fe was 0.3 : 1, the morphology of the TiO2/MIL-100(Fe) composite was completely egg-like. The TEM results showed that the {001} and {101} facets of TiO2 in the TiO2/MIL-100(Fe) composite were co-exposed. The BET results showed that the TiO2/MIL-100(Fe) composite had a large specific surface area and pore size. The larger pore size provided an effective channel for the photocatalytic degradation of MB and the interfacial effect of TiO2 and MIL-100(Fe). The separation efficiency of the photogenerated electron-hole pairs was effectively improved. The efficiency of 30% TiO2/MIL-100(Fe) in the photocatalytic degradation of MB reached 99.02% in 30 min under visible light. All these findings showed that the composite of the effectively charge-separated photocatalytic semiconductor and the porous MOF with a high specific surface area had a high potential application value for the photocatalytic degradation of organic pollutants.
机译：将特定晶体面暴露于特定的组合物或具有协同作用的合适的载体组合物可以有效地改善材料的光催化活性并提高其实用价值。为了选择理想的载体，主要因子是一个大的比表面积。这里，通过使用MIL-100（Fe）作为载体，首次通过容易的双罐水热法成功制备蛋样TiO 2 / MIL-100（Fe）复合材料。 XRD，SEM，TEM和其他表征方法表明，当Ti：Fe的摩尔比为0.3：1时，TiO2 / MIL-100（Fe）复合材料的形态完全蛋白。 TEM结果表明，TiO2 / MIL-100（Fe）复合材料中TiO 2的{001}和{101}刻面是共同暴露的。 BET结果表明，TiO2 / MIL-100（Fe）复合材料具有大的比表面积和孔径。较大的孔径提供了用于光催化降解MB的有效通道和TiO2和MIL-100（Fe）的界面效应。有效改善了光封闭的电子孔对的分离效率。在可见光下，Mb的光催化降解的30％TiO2 / MIL-100（Fe）的效率在30分钟内达到99.02％。所有这些发现表明，有效电荷分离的光催化半导体和具有高比表面积的多孔MOF的复合材料具有高潜在的应用有机污染物降解的应用值。

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    《RSC Advances》 |2019年第54期|共7页
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