发光学报Issue(12)：1437-1442,6.DOI:10.3788/fgxb20143512.1437
微米级NaYF4：Eu3+的水热合成及其荧光性能研究
Hydrothermal Synthesis and Fluorescence Properties of Micro-size NaYF4:Eu3+
摘要
Abstract
NaYF4:Eu3+ fluorescence powders were synthesized by mild hydrothermal method using EDTA-2Na as the complexing agent or sodium citrate as the assistant agent. Some physical proper-ties were characterized by powder-X-ray diffraction ( XRD) , scanning electron microscopy ( SEM) , flourescence spectra, and FT-IR. XRD results show that all the samples synthesized at 140℃ for 24 h are pure hexagonal phase NaYF4 . SEM images indicate that the as-prepared NaYF4:Eu3+ is uni-form microsphere with diameter of about 20 μm using EDTA-2Na as the complexing agent, while hexagonal prism microrod with length of 1. 8 μm using sodium citrate as the assistant agent. EDTA-2Na and sodium citrate, as assistant agent introducing into the reaction system, play a critical role in the morphology control. The morphology of the microsphere and hexagonal prism microrod is deter-mined by the complexation of EDTA-2Na and the selective adsorption of sodium citrate, respective-ly. The samples mainly emit blue-white light under 395 nm excitation. The fluorescence intensity of NaYF4:Eu3+ microsphere is much stronger than that of microrod.关键词
NaYF4:Eu3+/水热合成/微球/荧光Key words
NaYF4:Eu3+/hydrothermal synthesis/microsphere/fluorescence分类
数理科学引用本文复制引用
陶萍芳,庞起,覃利琴,莫炳桂..微米级NaYF4：Eu3+的水热合成及其荧光性能研究[J].发光学报,2014,(12):1437-1442,6.基金项目
基金项目:国家自然科学基金(21363027) （21363027）
广西科技攻关计划(2012AA07043) （2012AA07043）
玉林师范学院校级青年科研项目(2011YJQN26)资助 （2011YJQN26）
