来源：ACS PublicationsRare earth oxide phosphates (oxyphosphates), with extended metal-oxygen-phosphate bonding networks and a high rare-earth metal-to-phosphorus ratio (RE/P 1), are promising materials for thermal and environmental barrier coatings in aircraft, rockets, and hypersonic vehicles because of their refractory properties. However, challenges such as complex crystal chemistry, phase purity control, and the absence of reliable phase diagrams due to a lack of thermodynamic data complicate their application. We synthesized a full series of rare-earth oxyphosphates with composition RE3O3(...
Release time:
2026
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09
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17
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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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09
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16
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Phytogenic Self-Conducting Flash Joule Heating Converts Rare-Earth Hyperaccumulator Biomass into Graphene Composites with Minimized Life-Cycle Impacts 来源：ACS PublicationsRare-earth elements (REEs) are essential to clean-energy technologies, yet their extraction remains energy intensive and environmentally damaging. Although REE hyperaccumulator plants offer sustainable bioresource, their conversion into functional materials is inefficient and poorly developed. Here, we report a feedstock-customized phytogenic self-conducting flash Joule heating (PSC-FJH) strategy that directly converts REE hyp...
Release time:
2026
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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 ...
Release time:
2026
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