Facile hydrothermal synthesis of manganese-metal organic framework nanostructures in the presence of various organic ligands for SO2 and CO2 gas adsorption

摘要

Herein, we successfully synthesized the manganese-metal organic framework via hydrothermal route using three kinds of carboxylates as organic ligands and Mn(NO3)(2) as a manganese precursor. The morphology and microstructure of the obtained products were characterized by X-ray diffraction, Fourier transformed infrared spectrum, scanning electron microscopy, transition electron microscopy, thermo-gravimetric analysis, differential scanning calorimetry and nitrogen adsorption [i.e. Brunauer-Emmett-Teller (BET) surface area analysis] techniques. Moreover, the effect of organic ligand type and preparation route on morphology and textural properties were investigated. The results showed that each type of used ligands leads to formation of products with specific morphologies and textural properties. Also, the hydrothermal route has significant effect on microstructures and textural properties of obtained products. The SO2 and CO2 gas uptake investigation of synthesized Mn-MOFs exhibited that the products obtained via hydrothermal route have high SO2 and CO2 gas uptake compared to method without using hydrothermal route.