Preparation of Novel MOF with Multipolar Pore and Adsorption Properties of VOCs

Abstract

MOF-5 crystals were prepared by solvothermal synthesis, and characterized by electron microscopy (SEM), X-ray powder diffraction (XRD), and specific surface area (BET). The adsorption of formaldehyde, acetone, glycerol and toluene were studied. The effects of reaction solvent ratio, adsorption time and synthesis temperature on adsorption were investigated. The results show that the reaction solvent ratio is 2.6, the crystal particles have good integrity, the cracking phenomenon and aggregation phenomenon are less, the size is more uniform, highly crystalline, the specific surface area and pore volume are larger, and the pore size distribution is more concentrated. The adsorption time is 48 h, the synthesis temperature is 95°C. Under high temperature conditions, MOF-5 has a high-dimensional skeleton crystal structure with higher specific surface area and pore volume. MOF-5 has the best adsorption effect on toluene.

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Synthesis of Carboxymethylcellulose–Acrylamide–Montmorillonite Composite Hydrogels for Wastewater Purification

“…In recent years, traditional adsorbents such as artificial resins and activated carbon have been widely used because of their advantages such as low cost. However, they are subject to many limitations due to their low adsorption efficiency, easy clogging and poor regeneration performance [22,23]. These adsorption materials, such as zeolites [24], metal-organic frameworks (MOFs) [25][26][27], hydrogels [28,29], and aerogels [30][31][32][33], have gradually appeared in people's field of vision.…”