Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1525950 | Materials Chemistry and Physics | 2009 | 5 Pages |
Abstract
A polyelectrolyte assisted chemical approach has been developed to synthesize well-dispersed EuF3 nanostructures with the controlled morphology and crystalline phase. It is indicated that the hexagonal doughnut-like EuF3 nanostructures with diameters of 200-300Â nm have been spontaneously transformed into orthorhombic spindle-like EuF3 nanostructures with diameters of 100Â nm and lengths of 250-400Â nm with the extension of the reaction time. The negatively charged polyelectrolyte such as sodium poly(styrenesulfonate) (PSS) plays the critical role for the morphology and crystalline phase transformation of EuF3. Moreover, the different EuF3 nanostructures have been characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and photoluminescence (PL). Finally, the formation mechanism of the different EuF3 nanostructures has been primarily discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Tianfeng Cui, Hui Zhang, Ning Du, Bingdi Chen, Dongshen Li, Deren Yang,