来源：ACS PublicationsA series of vanadium-doped orthoniobates of the type La(Nb1–xVx)O4 (x = 0.00–0.40) were synthesized using a solid-state method, and their long-range average and short-range local structures comprehensively investigated using a combination of high-resolution neutron powder diffraction (NPD) and synchrotron X-ray powder diffraction (S-XRD) that produced accurate and precise structures of several members of the series. The structures evolve from a monoclinic fergusonite-type to a tetragonal scheelite-type structure as the V content increases. Substituting Nb5+ by the smaller V5...
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2025
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Synergistic Effects of Multimodal Polydopamine Coating on NaGdF4@NaYF4:Nd3+ Nanostructured Alginate Microspheres through the Combination of Chemotherapy and Photothermal Therapy 来源：ACS PublicationsNanophosphors have gained substantial attention in recent years for both the diagnosis and treatment of cancer. Near-infrared optical imaging based on Nd3+-doped rare-earth nanophosphors is widely used for deep penetration tissue imaging. The present work aims to develop a hierarchical structure of polydopamine (PDA)-coated alginate microspheres encapsulated with NaGdF4@NaYF4:Nd3+ and cisplatin ...
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2025
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Addressing Discrepancies between Theory and Experiments in Boltzmann Luminescence Thermometry with Ln3+ Ions 来源：ACS PublicationsTrivalent lanthanide ion-doped nanoparticles are widely employed as nanoscale thermometers, driving rapid advancements in real-world applications. When using the Luminescence Intensity Ratio (LIR) technique, a calibration process is often required to determine macroscopic calibration parameters. However, despite extensive studies from various research groups, significant discrepancies are observed among the reported values, even for identical Ln3+–host systems un...
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2025
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来源：ACS PublicationsWe report the activity of transition metals (Fe, Co, and Ru) supported on CeO2 (CeO) and Gd-doped CeO2 (CeGdO) for ammonia synthesis. Compared with BM/CeO (BM = Fe + Co), the Ru/BM/CeGdO catalyst achieved 3.1-fold higher rates at 450 °C and 0.8 MPa. Such high activity was attributed to the basicity of the catalysts and their reversible hydrogen storage ability. Specifically, built-in oxygen vacancies and partially reduced ceria support readily transfer electrons to the metals. Further, the electron-rich metal surface easily dissociates N2 and forms NH3 at rapid rates. K...
Release time:
2025
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