A new one-pot strategy to LaF3:Ce, Tb@SiO2 core-shell nanostructures. (October 2015)

• Record Type: Journal Article
• Authors: Liu, Lina; Sun, Ruirui; Zhang, Yongsheng; Qin, Ruifei; Zhang, Dongmei; Tang, Chunjuan; Chen, Linfeng; Liu, Lishuang
• Is Part Of: Solid state communications. Volume 219(2015)
• Page Start: 7
• Page End: 11
• Publication Date: 2015-10
• Subjects: A. LaF3:Ce, Tb -- B. SiO2 -- C. Core-shell -- D. One-pot; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2015.06.005
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: LaF3 :Ce, Tb@SiO2 core-shell nanostructures were synthesized using a new one-pot reverse microemulsion strategy. One-pot method facilitates the synthetic process of this kind of core-shell nanostructures. The crystalline phase, size, morphology, pore structure and luminescence properties were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), nitrogen physisorption isotherm, photoluminescence (PL) excitation and emission spectra. The results revealed that the core-shell nanostructures have an average diameter of about 27 nm and cores of about 3 nm, and that these nanostructures contain micropores with an average pore diameter of 0.43 nm. The characteristic emissions of Tb 3+ were observed under the excitation of Ce 3+ 4f–5d transition due to the energy transfer from Ce 3+ to Tb 3+ . LaF3 :Ce, Tb@SiO2 nanostructures can disperse well in water and the colloid can emit bright green light under ultraviolet (UV) irradiation. Highlights: ● LaF3 :Ce, Tb@SiO2 nanostructures were synthesized using a one-pot strategy. ● The core-shell nanostructures have an average diameter of about 27 nm. ● LaF3 :Ce, Tb@SiO2 colloid can emit bright light under ultraviolet irradiation.