来源：ACS Publications(Co)doping luminescent center(s) in a host is a universal strategy to photoluminescence (PL) modulations for extensive applications, yet its mechanism and interactions between structure and behavior in many phosphors remain ambiguous. Herein, via a facile sol–gel reaction method, differently tendentious occupations of Ce3+ in distinct crystallographic sites of K3YSi2O7 (KYS) lead to tunable PL in between blue and bluish-green under diverse excitations with high quantum efficiency. The generation of wide trap energy levels originating from heterovalent substitution Tb3+ → K+ ...
Release time:
2025
-
12
-
17
viewed：24
来源：ACS PublicationsDue to its strong acid and oxidation resistance, rutile β-MnO2 is considered to be a highly promising acidic nonprecious metal OER catalyst. However, the direct electron supply located in the Mn–O energy band below the Fermi energy level (Ef) causes instability of the Mn–O bond, making the long-term activity and stability of β-MnO2 poor. However, in this paper, introducing Ce 4f orbitals to construct a simultaneous Mn–O electronic configuration improved by the electronic buffer band through electronic coupling is proposed, thus enhancing the OER activity and stability. The c...
Release time:
2025
-
12
-
16
viewed：24
Low-Temperature Growth of High-Quality SiC Single Crystals via TSSG from Si–Nd–C Melt: Multiphysics Simulation and Experimental Validation 来源：ACS PublicationsThe top-seeded solution growth (TSSG) method is a promising technique for growing high-quality silicon carbide (SiC) single crystals. However, the inherently low carbon solubility in the Si–C system limits its growth efficiency. In this study, neodymium (Nd) was introduced as a solvent additive to enhance carbon solubility and enable the efficient low-temperature growth of SiC single crystals at 1823 K. A 2D axisymmetric numerical model ...
Release time:
2025
-
12
-
16
viewed：20
来源：ACS PublicationsThe rise in cancer fatalities necessitates the development of advanced treatments employing nanomaterials with better biocompatibility and efficacy. 5-Fluorouracil (5-FU), a pyrimidine analogue with potent antitumor effects, inhibits diverse solid tumors by blocking thymidylate synthase and incorporating its metabolites into RNA and DNA, preventing cancer cell proliferation. However, poor oral absorption and bioavailability limit its therapeutic efficiency. Hence, the development of a pH-stable carrier is imperative to bolster the efficacy and mitigate side effects. In this ...
Release time:
2025
-
12
-
15
viewed：15