Du et al., Oxygen vacancies induced self-assembling synthesis of V4+-BiVO4/rGO core-shell nanorods with enhanced water splitting efficiency and superior sewage purification capability. Liu et al., Synthesis of magnetic core–shell carbon Zn and Cu) hybrid materials and their catalytic properties. Kong, Metal-free graphene-based catalyst-Insight into the catalytic activity: a short review. Zhang et al., Synthesis of gold/rare-earth-vanadate core/shell nanorods for integrating plasmon resonance and fluorescence. Zhang et al., High-quality metal oxide core/shell nanowire arrays on conductive substrates for electrochemical energy storage. Peng et al., Synthesis of metal–organic-framework related core–shell heterostructures and their application to ion enrichment in aqueous conditions. Zhao et al., Epitaxial growth of hyperbranched Cu/Cu2O/CuO core-shell nanowire heterostructures for lithium-ion batteries. Cheng et al., Excellent photothermal conversion of core/shell CdSe/Bi2Se3 quantum dots. Schmeiduch et al., Enhanced luminescence properties of InAs–InAsP core–shell nanowires. Jiao et al., Ion exchange synthesis of PAN/Ag3PO4core–shell nanofibers with enhanced photocatalytic properties. Liu, Synthesis and stabilization of metal nanocatalysts for reduction reactions: a review. Additionally, potential intelligent systems can be expected to be designed on the basis of the fluorescence mutation as triggered by the temperature of 100 ☌. Such a kind of luminescent materials holds substantial promise for labeling the organisms that are vulnerable to short-wavelength UV light irradiation. By contrast, lowered stability can be noted for the core–shell-core phosphor (Y 2O 3:Eu 3+/MCM-41/YVO 4:Eu 3+), especially when the temperature is higher than 100 ☌, owing to the outer core (YVO 4:Eu 3+ nanoparticles) that is directly exposed to heat. Significantly, through temperature-dependent fluorescence investigation, it is found that our core–shell phosphor (Y 2O 3:Eu 3+/MCM-41) exhibits impressive fluorescence stability against temperature variation (27–227 ☌) due to the protective effect resulting from MCM-41. The novel structure of the core–shell-core hierarchical material is clarified through various characterization methods including X-ray diffraction analysis, transmission electron microscopy, selected-area electron diffraction and N 2 adsorption–desorption measurements. Synergistically bridging the phosphors Y 2O 3:Eu 3+ (as an inner core) and YVO 4:Eu 3+ (as an outer core) by amorphous SiO 2, i.e., MCM-41 (with ordered mesoporous channels) leads to the generation of the core–shell-core heterostructure with enhanced red emission and tunable, broadened-band response to excitation. For the first time, a hierarchical phosphor Y 2O 3:Eu 3+/MCM-41/YVO 4:Eu 3+, with a core–shell-core heterostructure, is presented in this study.

Yvo4 yvo4 core shell