来源：ACS PublicationsEquimolar multicomponent xenotime rare-earth phosphates (REPO4), ranging from binary to quaternary REPO4, were synthesized via chemical coprecipitation. The synthesized powders were densified via spark plasma sintering (SPS) at 1500 °C. Their thermal conductivity, coefficients of thermal expansion (CTEs), and resistance to calcium–magnesium–alumina–silicate (CMAS) corrosion were systematically characterized to evaluate their potential as environmental barrier coatings (EBCs) for SiC-based ceramic matrix composites (SiC/SiC CMCs). All REPO4 compositions studied here exhi...
Release time:
2026
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07
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07
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来源：ACS PublicationsRare earth elements (REEs) are indispensable for modern technologies, including electronics, manufacturing, and renewable energy systems. However, due to the similar physicochemical properties, the separation of REEs remains challenging. Here, we investigate the transport of REE ions through functionalized graphene nanopores using molecular dynamics simulations. Remarkably, −COO–-functionalized nanopores exhibit high selectivity for middle REEs over heavy REEs, with Sm3+/Y3+ and Eu3+/Y3+ selectivities of 66 and 75, respectively. Our simulations reveal an ion-pairing-mediated...
Release time:
2026
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07
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07
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来源：ACS PublicationsBy incorporating rare-earth and alkali metals into borates, two noncentrosymmetric borate crystals, K3Yb2(BO3)3 and Rb3Yb2(BO3)3, were successfully obtained via a high-temperature solution method. Both K3Yb2(BO3)3 and Rb3Yb2(BO3)3 deliver second harmonic generation (SHG) responses of 0.39 and 0.22 × KH2PO4 (KDP) and moderate birefringence of 0.029 and 0.035 at 546 nm. The UV cutoff edges of the two title crystals are 237 and 240 nm, which correspond to band gaps of 4.68 and 4.61 eV. Both K3Yb2(BO3)3 and Rb3Yb2(BO3)3 demonstrate high thermal stability, with decomposition...
Release time:
2026
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07
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来源：ACS PublicationsToward the development of new separation strategies for rare earth elements (REs; La–Lu, Y, Sc), the discovery of divergent reactivity for RE complexes is an essential first step. We report the synthesis, photophysical characterization, and photodimerization reactivity of a series of kinetically inert rare earth coordination compounds encapsulated by a 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) ligand appended with a triazole-bridged anthracene arm, RE(DO3A-anthracene), 2-RE (RE = La–Pr, Sm–Lu, Y). Ultraviolet (UV) light irradiation of all 2-RE compounds prod...
Release time:
2026
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