Facile Synthesis and Photoluminescence of Europium Ion Doped LaF₃ Nanodisks

Abstract

) nanodisks with perfect crystallinity were successfully synthesized by a simple method. The synthesis was carried out in an aqueous solution at room temperature without the use of templates or organic additives. The mechanism of formation of the nanodisks was explored, and the fluoride source (KBF 4 ) is believed to play a key role in controlling the morphology of the final product. Furthermore, the size of the disk can be simply moderated by vary-

Template-free synthesis, characterization, growth mechanism and photoluminescence property of Eu(OH)3 and Eu2O3 nanospindles

“…In general, materials with a hexagonal structure, the anisotropic growth along the c axis is available to form the 1D nanostructure, as the large polar surface is generally energetically unfavorable unless the surface charges are compensated by capping agents [42]. At a high OH − concentration, OH − ions are preferably adsorbed on the {0 0 1} and {1 0 0} plane of Eu(OH) 3 as compared with {1 1 0} crystal planes [43], resulting in different growth rates of different planes to form Eu(OH) 3 nanospindles. The absorbed OH − ions not only passivate the surface of nanocrystals but also prevent the agglomeration.…”

Synthesis and characterization of nano-sized Ba x Sr1−x SO4 (0 ≤ x ≤ 1) solid solution by a simple surfactant-free aqueous solution route

“…However, it is still an important challenge to obtain large quantities of nanoparticles by simple and powerful methods. Nowadays, the solution-phase methods have been considered as one of the most promising routes for the synthesis of nanocrystals with some significant advantages, including less-complicated techniques, low-cost and large-scale production (Cheng et al 2004;Yuan et al 2005;Zhu et al 2007;Li et al 2008).…”

Preparation and colloidal behaviour of surface-modified EuF3

“…2b). This shape is unusual, because researchers observe the disklike particles of EuF 3 and LaF 3 more often [15][16][17]. The tore-like aggregates are constructed by numerous primary nanoparticles having a hexagonal shape and a size about 20 nm (Fig.…”