来源：ACS PublicationsIn situ leaching of ion-adsorption rare earth deposits (IAREDs) in southern China creates evolving, multi-contaminant legacies that differ markedly across the mining lifecycle. This study examines the spatiotemporal hydrogeochemical patterns in a representative watershed, spanning active mining areas, abandoned areas undergoing natural recovery, and downstream residential areas receiving lime-treated effluent. In active mining areas, the injection of MgSO4 lixiviant rapidly mobilizes rare earth elements (REEs) and potentially toxic elements (PTEs, e.g., Cd and Pb) mainly thr...
Release time:
2026
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来源：ACS PublicationsAtomic structures of a Lu-segregated grain boundary (GB) in α-Al2O3 are identified using hybrid Monte Carlo and molecular dynamics (MCMD) simulations based on a neural-network potential (NNP) trained on density-functional-theory (DFT) data, in combination with scanning transmission electron microscopy (STEM). The NNP accurately reproduces the relationship between the potential energy and atomic structures. This enables us to screen candidate atomic structures by performing many structural relaxations and long time-scale MD simulations, prior to final DFT validation, signific...
Release time:
2026
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06
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来源：ACS PublicationsPrecise control over stereoselective polymerization is crucial for regulating polymer properties. Poly(2-vinylpyridine) (P(2-VP)) represents an important class of polymeric materials. Despite extensive research on stereoregular P(2-VP)s driven by their potential outstanding properties, studies on highly syndiotactic P(2-VP) remain limited. Herein, we report the 2-vinylpyridine (2-VP) syndioselective polymerization catalyzed by quinolyl anilido-ligated rare-earth metal complexes. The stereoselectivity of the 2-VP polymerization is strongly influenced by the types of central m...
Release time:
2026
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Embedded Hard Base Sites in 1D Covalent Organic Frameworks Enable Selective Photocatalytic Uranium Recovery from Rare Earth Leaching Solution 来源：ACS PublicationsSelective uranium recovery from rare earth leaching solutions is hindered by competing ions and similar chemistry. Herein we propose a “framework-embedded hard base sites” strategy that simultaneously resolves selectivity and charge separation bottlenecks. By anchoring oxygen atoms as hard bases into 1D covalent organic frameworks (COFs), we create a dual-function platform where oxygen sites selectively capture uranyl ions while deloca...
Release time:
2026
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