Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 502, Issue 1, Pages 38-42Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.04.186
Keywords
Energy storage materials; Nanostructured materials; Optical properties; X-ray diffraction; Scanning electron microscopy
Categories
Funding
- BSTWZ [G20070092]
- NSFZJ [Y4090118, R4090137]
- SRFZJED [Y200803419]
- ZJED Innovative Team
- NSFC [50772076]
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Single-crystal SrAl2O4:Eu2+,Dy3+ nanosheets were first synthesized by a reliable two-step method. More specifically, nanosheets bundles precursors were synthesized by a facile but efficient hydrothermal route in the absence of any organic additives, catalysts, and templates, and then SrAl2O4:Eu2+,Dy3+ nanosheets were obtained by thermally splitting the precursors. The products were characterized by multiple techniques including X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron microscopy (HRTEM). It was found that urea was very efficient to form nanosheets bundles precursors. The as-obtained SrAl2O4:Eu2+,Dy3+ nanosheets showed higher photoluminescence intensity (at 516 nm), compared with commercial corresponding powders. Furthermore, the SrAl2O4:Eu2+,Dy3+ nanosheets could sustain visible greenish-yellow light in dark places more than 16 h, suggesting potential applications in many fields. (C) 2010 Elsevier B.V. All rights reserved.
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