来源：ACS PublicationsChemical mechanical polishing (CMP) is essential for manufacturing high-precision optical components. However, conventional cerium dioxide (CeO2) abrasives are often limited by their large particle size and insufficient chemical reactivity, hindering the simultaneous achievement of a high material removal rate (MRR) and a low surface roughness (Ra). To address this challenge, a series of Ce1–xSmxO2 (x = 0, 0.1, 0.15, 0.2, 0.25, or 0.3) nanoabrasives were synthesized via a one-step hydrothermal method, aiming to enhance the polishing performance by modulating the electronic s...
Release time:
2026
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Flux-Assisted Growth and Characterization of Noncentrosymmetric Quaternary Rare-Earth Selenides CsRESiSe4 (RE = La, Pr, Nd, Sm, Gd, Tb) Crystal Structure, Magnetism, and Theoretical Studies 来源：ACS PublicationsA series of six cesium-containing rare-earth selenosilicates, CsLaSiSe4, CsPrSiSe4, CsNdSiSe4, CsSmSiSe4, CsGdSiSe4, and CsTbSiSe4, with the general formula CsRESiSe4 (RE = La, Pr, Nd, Sm, Gd, and Tb), have been successfully synthesized using a flux-assisted boron chalcogen mixture (BCM) method. Single-crystal X-ray diffraction analysis confirms that all compounds crystallize in the nonce...
Release time:
2026
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来源：X-MOLSubstitutional or interstitial metal-cation dopants in CeO2 play key roles in catalytic, sensing, and energy applications. Cation dopants with a valency less than 4+ create charge-compensating oxygen vacancies in the lattice that boost ionic conductivity and act as reactant adsorption/dissociation sites. These cation dopants also modify the optical properties of CeO2, enabling the normally high-bandgap oxide to more effectively harvest visible light. In this perspective, we highlight the key progress made using dopants in CeO2 and the challenges that remain. We briefly summarize common...
Release time:
2026
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来源：ACS PublicationsHeterobimetallic rare-earth-nickel alkyl complexes (RE-Ni-alkyl) supported by an arene-anchored bis(phosphinomethylamido) ligand were synthesized and further reacted with MesPH2 (Mes = 2,4,6-trimethylphenyl) to afford rare-earth-nickel phosphido complexes (RE-Ni-PHMes). The phosphido complexes have exhibited insertion reactivity toward a variety of unsaturated substrates, including alkyne, carbodiimide, ketone, organic azide, and diazomethane, leading to the formation of a series of heterobimetallic rare-earth-nickel complexes with various functional ligands. On the other ha...
Release time:
2026
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