The preparation and luminescence properties of Gd2SiO5:Tb3+@SiO2 core-shell spherical particles

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL Journal of Alloys and Compounds Pub Date : 2024-11-29 DOI:10.1016/j.jallcom.2024.177805

Sikun Hu, Weijun Zhao, Xinyi Huang, Xueni Yang, Jiayi Zhang, Litian Lin, Haiyong Ni, Jiuping Zhong

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引用次数: 0

Abstract

Rare-earth spherical particles (RE-SPs) have garnered significant interest as nanomaterials for biomedical applications due to their high luminescence intensity and tunable luminescence lifetimes. In this study, Tb³⁺-doped Gd₂SiO₅@SiO₂ (GSO: Tb³⁺@SiO₂) core-shell spherical particles were prepared by coprecipitation and Stöber methods. Firstly, the phase transitions and core-shell structures of GSO:Tb³⁺@SiO₂ SPs during preparation were discussed. The obtained core-shell SPs exhibited excellent dispersion and a well-defined spherical morphology with sizes ranging from 250 to 350 nm. Secondly, the luminescence properties of GSO:Tb³⁺@SiO₂ SPs were investigated, delving into the concentration quenching mechanisms of Tb³⁺ ion and the energy transfer (ET) from Gd³⁺ to Tb³⁺ in SPs. Thirdly, the potential biomedical applications of the GSO:Tb³⁺@SiO₂ SPs were evaluated by examining properties such as radioluminescence, luminescence stability and surface charge. The results of present work indicates that the obtained novel spherical particles material with distinct core-shell structures has potential application in X-ray induced photodynamic therapy (X-PDT).

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.