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首页> 外文期刊>RSC Advances >Isomorphous substitution of Cr by Fe in MIL-101 framework and its application as a novel heterogeneous photo-Fenton catalyst for reactive dye degradation
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Isomorphous substitution of Cr by Fe in MIL-101 framework and its application as a novel heterogeneous photo-Fenton catalyst for reactive dye degradation

机译：铁在MIL-101骨架中被铬同构取代并作为新型非均相光芬顿催化剂用于活性染料降解

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摘要

Partial isomorphous substitution of Cr by Fe in the MIL-101 framework was achieved by direct synthesis using a hydrothermal method (conventionally, solvothermal method). The products were characterized by XRD, EDX, N-2 adsorption (BET), TEM, UV-vis, FTIR, XPS and testing the photo-Fenton activities in the degradation of the commercial reactive dye RR195. From FTIR and XPS results, it was revealed that Fe is really incorporated into the MIL-101 framework. From EDX results, an amount of ca. 25% of Cr atoms in the MIL-101 framework is substituted by Fe atoms. Fe substituted Cr-MIL-101 showed high adsorption capacity of reactive dye. Moreover, this material exhibited high photo-Fenton activity in reactive dye degradation, opening new applications of MOFs as novel heterogenous photo-Fenton catalysts.
机译：通过使用水热法（常规为溶剂热法）直接合成，在MIL-101骨架中用Fe对Cr进行了部分同晶取代。产品通过XRD，EDX，N-2吸附（BET），TEM，UV-vis，FTIR，XPS进行表征，并测试光Fenton活性对商用活性染料RR195的降解作用。从FTIR和XPS结果可以看出，Fe确实掺入了MIL-101框架中。从EDX结果来看，大约MIL-101骨架中25％的Cr原子被Fe原子取代。 Fe取代的Cr-MIL-101表现出高活性染料吸附能力。此外，这种材料在反应性染料降解中表现出高的光芬顿活性，开辟了MOF作为新型异质光芬顿催化剂的新应用。

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