Features of Metal-Organic Frameworks

Inorganic nodes composed by coordinatively unsaturated metal sites, such as accessible copper or chromium clusters in desolvated HKUST-1 or MIL-101, can act as Lewis and even Brmsted acids. Inorganic nodes made from noble transition metal, such as palladiiun, can also act as metal catalyst for carbon-carbon coupling reactions [60]. 

A few amino (Am) functionalized MOFs have been obtained by direct self-assembly using Am-derived ligands, such as 2-aminoterephthalic add or 3,5-diamino-l,2,4-triazole. Such Am-MOFs have functionalities on their walls, which 

While MOFs aheady find a wide range of appHcations as adsorbents and catalysts [8, 58, 59,62-65], the key to expand their use in other processes requires integration of new functionalities (e.g., via linker functionahzation and encapsulated metal particles) in order to obtain materials showing a higher degree of sophistication 

Engineering Metal-Organic Frameworks Catalysts by Postsynthetic Modification 

Zeolites, which form one great family of crystalline porous materials, are broadly used in catalysis (petrochemicals cracking). However, postmodification ofmicrop-orous zeolites is limited to cation exchange or silanation. In addition, zeolites also suffer a drastic limitation in their small pore sizes. Among other porous materials, MS materials, such as MCM-41 and SBA-15 (SBA, Santa Barbara amorphous) [66, 67], are widely used as adsorbents or catalyst supports however, unlike the highly ordered MOFs, their walls are amorphous and thus exhibit relatively disordered surface hydroxyl group distribution [68]. In addition, the diversity of MS materials is limited in terms of composition and porous structure. 

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The above requirements directed our attention to the specific surface features of Metal Organic Frameworks (MOF) [6,7] and graphite oxides (GO) [8,9]. The former are... 

At the present time, synthesis and fabrication of functional nanofibers represent one of the most interesting fields of nanoresearch. Combining the advanced structural features of metal-organic frameworks with the fabrication technique may generate new functionalized nanofibers for more multiple purposes. 

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