Adsorption of Pd(II) from wastewater by a functionalized metal-organic framework with aminopyridine structure: Performance and mechanism

Regulating the Interface Polarity Distribution of Zr-Based MOFs by Amino Acid-Like Ligand Functionalization Enables Efficient Recovery of Gold

“…13 To overcome these limitations, advanced adsorbents with high efficiency, stability, and selectivity are needed. 14 This study aims to develop more sustainable and efficient gold recovery processes. In recent years, metal−organic frameworks (MOFs) and coordination polymers have garnered substantial interest owing to their large surface areas, abundant active sites, and tunable pore structures.…”

“…Issues such as limited adsorption capacity, poor selectivity, sluggish adsorption rates, and the potential for secondary pollution restrict the widespread adoption of adsorption technologies for gold recovery . To overcome these limitations, advanced adsorbents with high efficiency, stability, and selectivity are needed . This study aims to develop more sustainable and efficient gold recovery processes.…”

Single-step synthesis of prominently selective and easily regenerable POSS functionalized with high loadings of sulfur and carboxylic acids

“…Among these, adsorption offers advantages in terms of effectiveness, simplicity, cost-effectivity, and reusability. Several adsorbents have been studied as potential candidates for removing PGMs from water and wastewater media, [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] but only a few demonstrate high selectivity, solution stability, and excellent repeatability. 8,10,11,15,[19][20][21][22] Therefore, there is a need to design advanced novel materials that fulll essential criteria, such as easy fabrication, high affinity, excellent selectivity, rapid kinetics, high acid-stability, and procient repeatability.…”

“…This highlights its superiority in terms of both the amount of uptake and the acid-stability compared to previously reported adsorbents. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] The prepared POSS-S-COOH underwent comprehensive characterization using various analytical techniques, including 13 C nuclear magnetic resonance ( 13 C NMR), 29 Si NMR, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), zeta potential measurement, energy dispersive spectroscopy (EDS), BET isotherm, eld emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The study also included investigations on the pH inuence, adsorption isotherm, kinetic, and thermodynamic aspects using POSS-S-COOH with PdCl…”