来源：ACS PublicationsSecuring a sustainable supply of rare earth elements (REEs) requires efficient separation and recovery from secondary streams. Zeolites are attractive, low-impact sorbents; however, the atomistic origins of REE selectivity under hydrated conditions remain insufficiently resolved. Here, we combine high-resolution synchrotron X-ray powder diffraction (XRPD) with density functional theory (DFT) to elucidate the exchange and recovery mechanisms of Ce3+, La3+, Eu3+, and Y3+ in ammonium-exchanged faujasite X (NH4–X). Monoelement solutions mimicking the concentrations of leachates ...
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2026
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Six-Core Ln-MOF Materials (Ln = La, Eu, Tb) Constructed from the Building Blocks [Ln4(COO)10] and [Ln4(COO)10(μ-H2O)] Based on In Situ Reactions and Their Multifunctional Fluorescence Sensor Behavior来源：ACS PublicationsLa-MOF complex with six metal cores was synthesized by an in situ reaction of terephthaloyl chloride and La(NO3)3·6H2O under solvothermal conditions. During the reaction process, it was surprisingly found that the terephthaloyl chloride was hydrolyzed into 1,4-H2BDC and then coordinated with La(NO3)3·6H2O to form a six-core metal–organic framework, complex 1, [La6(1,4-B...
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2026
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来源：ACS PublicationsThe detection of per- and polyfluoroalkyl substances (PFASs) in the environment is critical due to their adverse health effects, but it remains challenging because of the high cost and technical complexity of standard analytical methods. We developed a series of rare earth-based bimetallic metal–organic frameworks (MOFs) for the sensitive and efficient fluorescence detection of perfluorooctanoic acid (PFOA). By systematically modulating the ligand functional groups with amino (−NH2), hydroxyl (−OH), and fluorine (–F) moieties, the influence of ligand electronegativity on the...
Release time:
2026
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来源：ACS PublicationsRare-earth elements (REEs) are critical for medical technologies, electronics, and clean energy. Coal fly ash (CFA), a byproduct of coal combustion, offers a promising alternative REE source. However, efficient extraction and separation of REEs from CFA remain challenging due to the complex composition of CFA. This study introduces a sustainable method for REE recovery using a recyclable ionic liquid, betainium bis(trifluoromethylsulfonyl)imide ([Hbet][Tf2N]), which serves both as the extractant from CFA and as the electrolyte in electrodeposition. In the first stage, [Hbet]...
Release time:
2026
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