Kitchen grinder: a tool for the synthesis of metal–organic frameworks towards size selective dye adsorption

Abstract

A simple, swift mechanochemical approach for MOF synthesis using kitchen grinder has been developed for size selective dye adsorption.

Effect of Synergistic Interplay between Surface Charge, Crystalline Defects, and Pore Volume of MIL-100(Fe) on Adsorption of Aqueous Organic Dyes

“…The BET specific surface area of MIL-100­(Fe)-HF was significantly higher than that of the two other MIL-100­(Fe) samples and nearly equal to that of MIL-100­(Fe) crystals (1917 m 2 g –1 ) . The BET surface areas of the other two MIL-100­(Fe) nanocrystals without HF were almost the same as that of previously reported MIL-100­(Fe) nanocrystals with and without HF. , The micropore and total pore volumes of MIL-100­(Fe)-HF, MIL-100­(Fe), and MIL-100­(Fe)-TMA were 0.7521 and 0.9634, 0.5427 and 1.0084, and 0.5292, and 0.9419 cm 3 g –1 , respectively.…”

“…The water-stable MIL-100­(Fe) crystal with its extremely large pores (free diameters of 25 and 29 Å) is a representative porous MOF with a large surface area ( S BET = 2500 m 2 g –1 ) and exceptional pore volume. , MIL-100­(Fe) is considered as a potential adsorbent for the removal of environmental pollutants from wastewater, which is a widely investigated method for dye wastewater treatment. − However, the adsorption of organic dyes by MIL-100­(Fe) has mainly been explained on the basis of electrostatic and π–π stacking interactions, whereas detailed adsorption mechanisms based on structure–property relationships remain scarce. In order to improve the adsorption performance of MIL-100­(Fe), investigate the adsorption driving forces, and further understand the synergistic relationship between them for elucidating the adsorption mechanism of organic dyes, herein, MIL-100­(Fe) micro/nanoparticles with different surface charges, sizes, morphologies, crystal structure defects, and pore volumes were synthesized by a solvothermal method using 1,3,5-benzenetricarboxylic acid (H 3 BTC) as an organic linker, iron chloride hexahydrate as a metal source, and hydrogen fluoride or tetramethylammonium hydroxide as coordination modulators.…”

Recent advances in process engineering and upcoming applications of metal–organic frameworks

“…The third method is mechanochemical synthesis, which requires only a small amount of solvent compared with solvo/hydrothermal reactions. The mechanochemical synthesis of a MOF was first reported in 2006 [45] and has since been used to synthesis several MOFs such as COF [46] , [47] , [48] , MOF-5 [49] , ZIF-8 [50] , [51] , [52] , MIL-53 [53] , MIL-101 [54] . However, no mechanochemical syntheses for Zr-based MOFs have been established.…”

Unique and efficient adsorbents for highly selective and reverse adsorption and separation of dyes via the introduction of SO3H functional groups into a metal–organic framework

“…Various kinds of adsorbents, such as activated carbon, 11,12 montmorillonite, 13 chitosan, 14,15 clay minerals, 16 zeolites, 17,18 and metal-organic frameworks [19][20][21] (MOFs), have been applied to eliminate dye molecules from aqueous media. Among the aforementioned adsorbents, MOFs have gained signicant attention in recent years owing to their unique characteristics.…”