来源 ：ACS PublicationsRelaxor ferroelectrics with a large piezoelectric coefficient (d33), sizable coercive field (EC), and high signal piezoelectric coefficient (d33*) are of particular importance in technology. Due to the trade-off between domain switching and high energy barriers, materials of this kind are rather rare, and the discovery and design of such materials remain a challenging task. Here, we successfully grew Sm0.01Pb0.985[(Zn1/3Nb2/3)0.93Ti0.07]O3 (Sm–PZN–PT) crystals with a high d33 value of 2930 pC/N (up to 3032 pC/N at 150 °C) and a significantly enhanced EC value of 12.3 k...
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2025
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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...
Release time:
2025
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