Jump to main content
Jump to site search


Synthesis and photoluminescence properties of the novel core-shell-shell SiO2@CePO4:Tb@SiO2 submicro-spheres

Abstract

A novel core-shell-shell SiO2@CePO4:Tb@SiO2 submicro-sphere was controllably synthesized by a bridging ligand organosilane HOOCC6H4N(CONH(CH2)3Si(OCH2CH3)3)2 (MABA-Si) connecting the silica core and rare earth ions. The as-synthesized samples were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (IR). It is found that SiO2@CePO4:Tb@SiO2 has a ~25 nm outermost shell, a ~4 nm intermediate shell, and a ~200 nm core. SiO2@CePO4:Tb@SiO2 exhibits stable photoluminescence properties in aqueous solution: its photoluminescence intensity was still unquenched after 15 days. The core-shell-shell submicro-spheres were found to have better photoluminescence than the core-shell submicro-spheres, because the SiO2 shell protected the phosphor materials and then improved its photoluminescence intensity and biocompatibility. A formation mechanism of the core-shell-shell SiO2@CePO4:Tb@SiO2 submicro-spheres was proposed. Thus, the low-cost preparation of the core-shell-shell SiO2@CePO4:Tb@SiO2 submicro-spheres could be achieved by rational using SiO2.

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Jul 2018, accepted on 10 Sep 2018 and first published on 11 Sep 2018


Article type: Paper
DOI: 10.1039/C8CE01189C
Citation: CrystEngComm, 2018, Accepted Manuscript
  •   Request permissions

    Synthesis and photoluminescence properties of the novel core-shell-shell SiO2@CePO4:Tb@SiO2 submicro-spheres

    K. Yang, Y. Li, Y. Ma, L. Feng, A. Wu, Y. Qiao, J. Bao, W. Li, X. Zhu and R. Yu, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01189C

Search articles by author

Spotlight

Advertisements