稀土氟化物纳/微米材料的水热合成、形成机理和发光性质

林君; 李春霞

doi:10.3788/fgxb20113206.0519

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稀土氟化物纳/微米材料的水热合成、形成机理和发光性质

特邀报告 | 更新时间：2020-08-12

- 稀土氟化物纳/微米材料的水热合成、形成机理和发光性质
- Hydrothermal Synthesis, Formation Mechanisms and Luminescence Properties of The Rare Earth Fluorides Nano- and Micro-materials
- 发光学报 2011年32卷第6期页码：519-534
- 作者机构：
  
  中国科学院长春应用化学研究所稀土资源利用国家重点实验室,吉林长春,130022
- 作者简介：
- 基金信息：
  
  国家重大科学研究计划 (2007CB935502,2010CB327704)();国家自然科学基金(50572103,20431030,50702057)();中国科学
- DOI：10.3788/fgxb20113206.0519
  中图分类号： O482.31
- 收稿日期：2011-04-25，
  
  修回日期：2011-05-24，
  
  网络出版日期：2011-06-22，
  
  纸质出版日期：2011-06-22
- 稿件说明：
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林君, 李春霞. 稀土氟化物纳/微米材料的水热合成、形成机理和发光性质[J]. 发光学报, 2011,32(6): 519-534

LIN Jun, LI Chun-xia. Hydrothermal Synthesis, Formation Mechanisms and Luminescence Properties of The Rare Earth Fluorides Nano- and Micro-materials[J]. Chinese Journal of Luminescence, 2011,32(6): 519-534
林君, 李春霞. 稀土氟化物纳/微米材料的水热合成、形成机理和发光性质[J]. 发光学报, 2011,32(6): 519-534 DOI： 10.3788/fgxb20113206.0519.

LIN Jun, LI Chun-xia. Hydrothermal Synthesis, Formation Mechanisms and Luminescence Properties of The Rare Earth Fluorides Nano- and Micro-materials[J]. Chinese Journal of Luminescence, 2011,32(6): 519-534 DOI： 10.3788/fgxb20113206.0519.

摘要

研究了稀土氟化物纳/微米材料的设计合成、形貌控制、形成机制以及发光性质。发展了一种简单、整体、没有模板、环境友好的水热方法合成系列稀土氟化物

即用有机添加剂柠檬酸钠(Na

O)作为配位剂和形貌控制剂

通过改变氟源(NaF

F或NaBF

)和最初溶液的pH值

得到了具有不同成分、晶体结构、尺寸和形貌的稀土氟化物

包括

(

=La~Lu

Y)以及六方相和立方相的Na

(

Lu);最重要的是首次研究了具有各种晶体结构和形貌的镱、镥氟化物的可控合成。对各种产物可能的形成机理进行了合理、系统的讨论

并对各种基质中Eu

掺杂的下转换和Yb

/Er

/Tm

共掺杂的上转换发光性质进行了详细的研究。

Abstract

The rare earth fluorides nano- and micro-materials as well as controlled morphologies

formation mechanisms and luminescence properties are studied in this paper. A facile

general

template-free and environmentally friendly hydrothermal methodology has been developed to prepare the whole rare earth fluorides nano- and microcrystals. Organic additive trisodium citrate plays double roles of coordination ligand and shape modifier in determining the morphologies of the final products. Through the precise tuning several critical parameters including F

sources (NaF

NaBF

)

pH value in the initial solution and the choice of organic additives

the whole rare earth fluorides with various compositions

crystal structures

uniform sizes and morphologies have been obtained easily

including

(

=La~Lu) as well as cubic and hexagonal phase Na

(

Lu). More importantly

for the first time

the controllable synthesis of ytterbium (or lutetium) fluoride compounds with diverse crystal phase and morphologies have been reported. The possible formation mechanisms for products with various architectures have been presented systematically. The photoluminescence properties of Eu

-doped DC and Yb

/Er

/Tm

-codoped UC Na

have also been investigated in detail.

关键词

Keywords

references

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