Hydrothermal Synthesis and Fluorescence Properties of Micro-size NaYF4:Eu3+

TAO Ping-fang; PANG Qi; QIN Li-qin; MO Bing-gui

doi:10.3788/fgxb20143512.1437

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Hydrothermal Synthesis and Fluorescence Properties of Micro-size NaYF₄:Eu³⁺

更新时间：2020-08-12

- Hydrothermal Synthesis and Fluorescence Properties of Micro-size NaYF₄:Eu³⁺
- Chinese Journal of Luminescence Vol. 35, Issue 12, Pages: 1437-1442(2014)
- 作者机构：
  
  1. 玉林师范学院化学与材料学院, 广西玉林 537000
  2. 广西大学化学化工学院, 广西南宁 530003
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143512.1437
  CLC： O482.31
- Received：23 July 2014，
  
  Revised：24 October 2014，
  
  Published：03 December 2014
- 稿件说明：
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陶萍芳, 庞起, 覃利琴等. 微米级NaYF4:Eu3+的水热合成及其荧光性能研究[J]. 发光学报, 2014,35(12): 1437-1442

TAO Ping-fang, PANG Qi, QIN Li-qin etc. Hydrothermal Synthesis and Fluorescence Properties of Micro-size NaYF4:Eu3+[J]. Chinese Journal of Luminescence, 2014,35(12): 1437-1442
陶萍芳, 庞起, 覃利琴等. 微米级NaYF4:Eu3+的水热合成及其荧光性能研究[J]. 发光学报, 2014,35(12): 1437-1442 DOI： 10.3788/fgxb20143512.1437.

TAO Ping-fang, PANG Qi, QIN Li-qin etc. Hydrothermal Synthesis and Fluorescence Properties of Micro-size NaYF4:Eu3+[J]. Chinese Journal of Luminescence, 2014,35(12): 1437-1442 DOI： 10.3788/fgxb20143512.1437.

摘要

分别以EDTA-2Na和柠檬酸钠为辅助剂

采用温和的水热法合成了六方相NaYF

:Eu

荧光材料.利用XRD、SEM、荧光分光光度计和FT-IR对样品的结构、形貌和荧光进行了表征.在反应温度为140 ℃、反应时间为24 h的水热条件下

得到的样品均为纯六方相的NaYF

.以EDTA-2Na为络合剂合成的NaYF

:Eu

为20 m的微米级球形体

而以柠檬酸三钠为辅助剂合成的NaYF

:Eu

为长度约为1.8 m的六棱柱微晶棒.样品的尺寸分布均匀、分散性好.辅助剂在微晶体的形貌控制过程中起了很大作用.在395 nm 光的激发下

NaYF

:Eu

发射出蓝白色光

微米级球形体的荧光强度明显强于微晶棒.

Abstract

NaYF

:Eu

fluorescence powders were synthesized by mild hydrothermal method using EDTA-2Na as the complexing agent or sodium citrate as the assistant agent. Some physical properties 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 NaYF

. SEM images indicate that the as-prepared NaYF

:Eu

is uniform microsphere with diameter of about 20 m using EDTA-2Na as the complexing agent

while hexagonal prism microrod with length of 1.8 m 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 determined by the complexation of EDTA-2Na and the selective adsorption of sodium citrate

respectively. The samples mainly emit blue-white light under 395 nm excitation. The fluorescence intensity of NaYF

:Eu

microsphere is much stronger than that of microrod.

关键词

Keywords

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