来源：ACS PublicationsDeveloping robust oxygen evolution reaction (OER) catalysts for proton exchange membrane water electrolysis (PEMWE) demands concurrent mitigation of insufficient activity and structural instability in acidic media. Herein, we propose a spin-state engineering strategy enabled by rare-earth doping to resolve the intrinsic activity-stability trade-off dilemma. Incorporation of rare-earth cations (Sm3+, Nd3+, Ho3+) into MnCo2O4.5 enhances Co–O covalency and 4f–3d coupling, increasing the crystal-field splitting and driving the Co sublattice from a purely high-spin Co2+/Mn4+ towa...
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2025
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来源：ACS PublicationsThe complexation behavior of three types of organic matter from the International Humic Substances Society standards and Reference materials was investigated with Eu3+, Tb3+, and Dy3+ ions under different pH conditions. These elements were selected as representative trivalent lanthanides of environmental concern due to their increasing occurrence in aquatic systems from technological waste. Experiments were conducted at pH values of 4, 5, and 6, with a constant ionic strength of 0.01 M NaClO4. Using fluorescence quenching combined with PARAFAC statistical analysis, the appar...
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2025
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Interactions between Methyl Branched-Chain Asymmetric Diglycolamides and Ln3+ Extraction and Spectroscopic and Theoretical Investigations来源：ACS PublicationsDiglycolamides show good selectivity for trivalent lanthanides and actinides and have good application prospects in the treatment of high level liquid waste (HLLW). In this study, two asymmetric diglycolamides with methyl groups at the α-position and β-position of the branched chains were synthesized through a microwave-assisted silane-mediated method: N,N′-dimethyl-N,N′-di(1-methylheptyl) diglycolamide (DMDMHDGA, L1) and N,N′-dimethyl-N,N′...
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2025
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Triple-Doped Rare-Earth Nanoemitters for Two-Photon 3D Printing of Chip-Scale Polymer Optical Waveguide Amplifiers 来源：ACS PublicationsPolymers with gain media can enable 3D printing of chip-scale optical amplifiers and lasers. In this work, a 3D-printable resin containing uniform dispersion of core/shell erbium–ytterbium–cerium codoped rare-earth nanoparticles (RENPs) is designed, synthesized, and characterized. The core/shell RENPs (NaYF4:Er3+,Yb3+,Ce3+@NaYF4) are synthesized by a high-temperature thermal decomposition method. Uniform dispersion at high concentrations of the RENPs in a 3D pri...
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2025
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