来源：ACS PublicationsRare earth elements (REEs) are essential for modern electronics and are increasingly entering electronic waste (e-waste) streams. Informal recycling can release REEs into the environment, but their sources, transfer pathways, and retained inventories remain poorly quantified. Here, we combine microscopic particle characterization, neodymium (Nd) isotopes, Bayesian source apportionment, and a Level III steady-state multimedia aquivalence (SMA) model to characterize REE sources, cross-media transport, and retained inventories in Guiyu, China. Spatial clustering of REE concentr...
Release time:
2026
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来源：ACS PublicationsSurface plasmons modulate rare-earth luminescence via local field enhancement and photothermal effects, yet the synergy-competition between these inherently coupled effects remains to be decoded, impeding precise level-selective control. Herein, we construct a Yb3+, Er3+ upconversion system with different metals (Au/Ag nanoislands) and host morphologies (prism/plate), and combine steady-state spectroscopy, fluorescence lifetime dynamics, and multiphysics simulations to decode their interplay. We unveil pronounced level selectivity: the 2H11/2→4I15/2 transition is dominated b...
Release time:
2026
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来源：ACS PublicationsMeasuring distribution coefficients (log D) for rare-earth solvent extraction is slow and expensive, making sample-efficient machine learning attractive. However, the practical questions of which acquisition strategy to use, whether the attendant uncertainty estimates can be trusted, and how well a model actually generalizes to new chemistry are rarely answered together on real data. We benchmark active learning (AL) on 1,202 experimental log D measurements for lanthanide extraction (93 ligands, 14 lanthanides, 45 literature sources), with prospective validation on four inde...
Release time:
2026
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来源：ACS PublicationsRare-earth metal triflates can modulate the structure, redox properties, and reactivity of transition-metal complexes when confined in supramolecular hosts. In this paper, we have investigated the inclusion of rare-earth metal triflates (Ln(OTf)3, Ln = Dy, Yb, La, Lu) into a cobalt(II) hemicryptophane tren cage (CoCageHCPT) using high-resolution electrospray ionization mass spectrometry (ESI-MS), cyclic traveling wave ion mobility mass spectrometry (cIM-TWIMS), host–guest exchange experiments, and examined the electrochemical properties using cyclic voltammetry. ESI-MS revea...
Release time:
2026
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