来源：ACS PublicationsYb2O3@C, Gd2O3@C, and CeO2@C hybrid catalysts with porous, defect-rich structures were synthesized via a modified vaporization–carbonization method and incorporated (7 wt %) into Mg96La3Ni alloys by ball milling. Yb2O3@C increased hydrogen absorption, while Gd2O3@C and CeO2@C reduced it; all enhanced dehydrogenation, with CeO2@C most effective. At 360 °C, 3 wt % H2 was released in 3.1 min for pristine Mg96La3Ni, but only 1.0, 1.9, and 2.7 min with CeO2@C, Yb2O3@C, and Gd2O3@C, respectively. CeO2@C reduced the activation energy from 121.67 to 109.78 kJ/mol. This study hi...
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2025
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Polarization Engineering and Chemical Bond Reconstruction in Rare-Earth Hexagonal Manganite via Fe3+-Occupied B-Site Doping for Piezocatalytic Therapy and FerroptosisPiezocatalytic therapy has emerged as a noninvasive therapeutic strategy. However, its therapeutic effect is limited by the low separation efficiency of carriers (electrons and holes) in piezoelectric materials. Rare-earth hexagonal manganite materials might be good candidates for efficient piezocatalytic therapy because of their high piezoelectric response, Curie temperature, and relatively narrow optical bandgaps. Herein, we rep...
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2025
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来源：ACS PublicationsThis work reports the fabrication of a novel electrochemical sensor leveraging reduced graphene oxide (rGO) modified with samarium oxide (Sm2O3) nanoparticles to enhance dopamine (DA) detection. The primary goal was to create a sensitive and selective platform capable of distinguishing DA in complex biological environments. The sensor was synthesized using a hydrothermal method to form rGO/Sm2O3 composites, followed by characterization employing scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and high-resolution TEM (HR-TE...
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2025
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Manipulating Local Electron Density of Fe Nanoclusters with Cerium Incorporation to Optimize Adsorption Behavior of N-Related Intermediates for Electrochemical Ammonia Synthesis from Nitrite来源：ACS PublicationsCluster-scale metal ensembles feature high atomic utilization characteristics, but their activity and selectivity toward the electrocatalytic nitrite reduction reaction (NO2RR) remain suboptimal. As conventional holders of 4f orbitals, rare earth elements, especially cerium, are drawing wide attention as efficient promoters for transition-metal-based materials. Herein, Ce is incorporated ...
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2025
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