Citation: Yan-li WU, Xian-zhu XU, Qiang XIAO. Synthesis and Properties of Bifunctional Gd₂O₃: Eu@mSiO₂ Core-Shell Naonorods[J]. Chinese Journal of Inorganic Chemistry, ;2021, 37(4): 638-644. doi: 10.11862/CJIC.2021.070 shu

Synthesis and Properties of Bifunctional Gd₂O₃: Eu@mSiO₂ Core-Shell Naonorods

1.
Jiangxi Key Laboratory ofOrganic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China
2.
College of Life Science, Jiangxi Normal University, Nanchang 330022, China

Corresponding author: Qiang XIAO, xiaoqiang@tsinghua.org.cn
Received Date: 12 October 2020
Revised Date: 25 January 2021

Figures(13)

A novel Gd₂O₃: Eu@mSiO₂ core-shell bifunctional nanorods were prepared by hydrothermal and tetraethyl orthosilicate hydrolysis methods. The morphology and phase structure of the samples were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray powder diffraction(XRD), infrared spectroscopy(FTIR). The results shows that the core-shell nanomaterial was composed of Gd₂O₃: Eu nanorods(length ~400 nm, diameter ~100 nm) as the core and mesoporous SiO₂ as the shell, and had uniform size and good dispersion. And the core-shell structured nanorod obtained strong red luminescence, giving the function of cell imaging upon incubation with the NCI-H460 lung cancer cells. The drug loading capacity and releasing behavior of the as-prepared Gd₂O₃: Eu@mSiO₂ were studied by using ibuprofen(IBU) as model drug. The results show that the IBU loading capacity of the Gd₂O₃: Eu@mSiO₂ core-shell nanorods could reach 10.25%, and the core-shell nanorods had obvious slow-release effect. Furthermore, IBU-loaded Gd₂O₃: Eu@mSiO₂ core-shell nanorod still showed red luminescence of Eu³⁺ under UV irradiation, and the emission intensity of Eu³⁺ in the drug-carrier system varied with the released amount of IBU, so that the drug together with its release situation can be easily tracked and monitored by the change in luminescence intensity.
- nanostructures,
- mesoporous material,
- drug delivery,
- luminescence,
- hydrothermal synthesis
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Synthesis and Properties of Bifunctional Gd₂O₃: Eu@mSiO₂ Core-Shell Naonorods