Synergistic dual-pyrazol sites of metal-organic framework for efficient separation and recovery of transition metals from wastewater

Efficiently selective extraction of iron (III) in an aluminum‐based metal–organic framework with native N adsorption sites

“…In Figure S5, the peak of carboxyl group at 1602 cm −1 in MOF‐303 showed an obvious blue shift compared with that of the ligand (3,5‐pyrazole dicarboxylic acid) at 1685 cm −1 , indicating the combination of 3,5‐pyrazole dicarboxylic acid ligand and Al 3+ . As mentioned above, the characteristic of functional groups is consistent with the counterpart of the molecular structure of previous report, [ 44 ] further demonstrating the operative synthesis of Al‐based adsorbents.…”

“…But the adsorption capacity on Fe 3+ cannot be observed any change obviously with the variation of the reaction temperature. Based on the S4 Equations and , [ 44 ] we can notice the selective adsorption capability will be enhanced with the dominant influence of the Fe 3+ concentration change factor, whereas weakened by the boost of the Cr 3+ concentration change factor. It could be concluded that the best performance temperature of the selective adsorption capability is around 303 K.…”

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy3+

“…Metal–organic frameworks (MOFs), connected by inorganic clusters and organic ligands, exhibit the advantage of adjustable pore structure and chemical property. In the past two decades, MOFs exhibited large potential in many fields, such as adsorption, separation, and catalysis. − In particular, water-stable MOFs with rich active sites have been widely used for water-phase adsorption and separation of metal ions. − However, to the best of our knowledge, the works on Dy 3+ adsorption in MOFs are rarely reported to date. Micropore adsorption is considered an effective mode for metal ions, where adjacent active groups are closer, which is beneficial for the synergic effect.…”

A novel hydrophilic MOFs-303-functionalized magnetic probe for the highly efficient analysis of N-linked glycopeptides

“…21,22 In addition, the metal and ligand sources are inexpensive and readily available, and the synthetic method is facile, environmentally friendly, using water as the sole solvent and is suitable for large-scale production. 23,24 Moreover, it has been identified that MOFfunctionalized magnetic graphene composites exhibit excellent performance for glycopeptide capture. 26,28 Herein, we designed and synthesized a MOFs-303-functionalized magnetic graphene probe (GO@Fe 3 O 4 @MOF-303) by the epitaxial growth of MOFs-303 on magnetic graphene oxide, and it exhibits an ultralow detection limit (0.1 fmol mL À1 ), perfect size-exclusion effect (HRP digests/BSA protein/HRP protein, 1 : 1000 : 1000, w/w/w), a high binding capacity (200 mg g À1 ) and excellent reusability in the recognition of standard N-linked glycopeptides due to its unique characteristics including strong magnetic property, large surface area (845 m 2 g À1 ), excellent hydrophilicity and suitable porous structure.…”