来源：ACS Publications High-quality single crystals of refractory oxides are essential for fundamental investigations and advanced functional characterization, yet their preparation is frequently limited by demanding precursor processing and the extremely high temperatures required for crystal growth. Here, we present a practical, reproducible, and experimentally accessible protocol for the preparation of rare-earth zirconate A2Zr2O7 single crystals based on direct processing of mixed-oxide precursors using a laser-heated pedestal (modified Czochralski) technique. In contrast to conventi...
Release time:
2026
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Disentangling Modulator and Fluoride Chemistry in Rare-Earth Metal–Organic Framework Formation via Multinuclear NMR Spectroscopy: A Mechanism-Guided Synthetic Redesign来源：ACS PublicationsMetal–organic framework (MOF) chemistry continues to expand, highlighting the need for molecular insight into framework formation. Solution-phase NMR provides a powerful, accessible, and economical means to probe these mechanisms. We examine the formation of rare-earth (RE) UiO-66, focusing on Yttrium(III)-UiO-66. RE-UiO-66 contains a hexa-metallic node in which the metals are bridged by μ3-fluorido, μ3-hydroxi...
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2026
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来源：ACS PublicationsRare-earth engineering of CeO2 offers a route to enhance Ru-based catalysts for ammonia synthesis by tailoring oxygen vacancies and metal–support interactions. Herein, we systematically synthesized and benchmarked Ru catalysts supported on RE (=Gd, La, and Sm)-modified CeO2 under identical conditions to establish promoter-structure–activity relationships. Rare-earth incorporation increased the Ce3+/Ce4+ ratio, oxygen-vacancy concentration, and weak acidic sites, facilitating electron transfer to Ru, promoting N2 activation, and potentially facilitating interfacial hydrogen s...
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2026
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Aqueous Adsorption of Rare Earth Elements by Organophosphonate-Ligand-Modified Metal–Organic Frameworks The Role of Ligand Loading in Surface Complexation来源 ：ACS PublicationsRare earth elements (REEs) are essential to clean energy and many other technologies, but REE mines are concentrated in a few geographical locations in the world and their broad accessibility is susceptible to trade bottlenecks. Waste streams from mining and other industrial processes containing trace REEs are attractive REE sources for enhancing the supply chain, but their separation from the waste stream remains a key ch...
Release time:
2026
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