Sustainable Preparation of MIL-100(Fe) and Its Photocatalytic Behavior in the Degradation of Methyl Orange in Water
Sustainable Preparation of MIL-100(Fe) and Its Photocatalytic Behavior in the Degradation of Methyl Orange in Water
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DOI：
10.1021/acs.cgd.6b01776
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发表时间：
2017-04-01
影响因子：
3.8
通讯作者：
Sanchez-Sanchez, Manuel
中科院分区：
文献类型：
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作者：
Guesh, Kiros;Caiuby, Clarice A. D.;Sanchez-Sanchez, Manuel
金属有机框架（MOFs）的真正工业建立需要在经济和化学可持续性方面取得重大进展。这项工作描述了一种新颖而简单的方法来制备最广泛研究的MOF材料之一，即MIL-100(Fe)，它在几个方面显着提高了传统工艺的可持续性。这种MOF材料的制备(i)在室温下（而不是传统方法中使用的150摄氏度），（ii）在几个小时后（而不是6天），（iii）在没有任何无机腐蚀性酸的情况下（传统方法中使用大量的HF和HNO3），以及（iv）在室温下洗涤（不像在80摄氏度下洗涤3小时）。有趣的是，MIL-100（Fe）的制备方法与半无定形Fe- btc （MOF材料商品化为Basolite F300，具有相同的金属和连接剂，也可以在类似的可持续条件下制备）的唯一区别是分别从Fe（II）或Fe（III）源开始，这在MOF材料的室温合成过程中开辟了一定的多功能性选择。采用x射线衍射、热重分析、N-2吸附/解吸等温线、c -s像差校正扫描透射电子显微镜和UV-vis漫反射光谱对制备的样品进行了表征。这两种室温制备的Fe-BTC材料在紫外光和太阳光辐射下进行了工业要求的光催化降解甲基橙的测试。MIL100（Fe）是一种活性较强的光催化剂。这种差异主要归因于其结构中存在较大的空腔。
The real industrial establishment of metal organic frameworks (MOFs) requires significant advances in economic and chemical sustainability. This work describes a novel and simple method to prepare one of the most widely studied MOF materials, i.e., MIL-100(Fe), which significantly improves the sustainability of the conventional process in several aspects. This MOF material is prepared (i) at room temperature (instead of 150 degrees C used in the conventional method), (ii) after a few hours (instead of 6 days), (iii) in the absence of any inorganic corrosive acid (significant amounts of HF and HNO3 are used in the conventional method), and (iv) it is washed at room temperature (unlike the washing at 80 degrees C for 3 h). Interestingly, the only difference in the preparation method of MIL-100(Fe) compared with that of semiamorphous Fe-BTC (MOF material commercialized as Basolite F300 having the same metal and linker, and which can be also prepared under similar sustainable conditions) is to start from Fe(II) or Fe(III) sources, respectively, which opens certain versatility options in the room temperature synthesis procedures of MOF materials. The prepared samples were characterized using X-ray diffraction, thermogravimetric analysis, N-2 adsorption/desorption isotherms, C-s-aberration corrected scanning transmission electron microscopy, and UV-vis diffuse reflectance spectroscopy. These two room-temperature-made Fe-BTC materials were tested in the industrially demanded photocatalytic degradation of methyl orange under both ultraviolet and solar light radiation. MIL100(Fe) was a very active photocatalyst in comparison with its homologue. That difference was mainly attributed to the presence of larger cavities within its structure.