Preparation method of europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material

A technology of europium gadolinium fluoride sodium and nanocrystalline materials, which is applied in the field of rare earth europium ion-doped gadolinium sodium fluoride red light-emitting porous nanocrystalline materials and the preparation field, achieving the effect of simple preparation process and good monodispersity

Active Publication Date: 2015-02-18
江苏晶曌半导体有限公司
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Guo Gao et al. used a one-step hydrothermal method and reacted at 320°C for 10 hours to obtain a NaYF4 porous microrod structure, which was about 3-5 μm in length, about 1 μm in diameter, and about 28.5 nm in pore size; However, under the same reaction conditions, the prepared NaGdF4 submicron crystals did not show a porous structure (Nanoscale, 2013, 5, 351)
So far, without adding any surfactant, the literature and patents of monodisperse porous nanocrystals based on NaGdF4 have not been published.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material
  • Preparation method of europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material
  • Preparation method of europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The red light-emitting porous nanocrystalline material of europium-doped gadolinium fluoride sodium of the present invention comprises: NaGd 1-x Eu x f 4 ,in x = 5 mol %. Its concrete preparation steps are as follows:

[0037] 1) Measure 9.5 ml of Gd(NO 3 ) 3 solution (0.4 mol / L) and 1 ml of Eu(NO 3 ) 3Solution (0.2 mol / L concentration) was dissolved in 150 ml distilled water to obtain [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 ] Mix the solution, take out 25 ml and keep it for later use. Add 3 g of urea to the mixed solution, heat at 90 °C for 2 h, and slowly form a white precipitate. The resulting white precipitate was centrifuged and washed once with distilled water, then transferred to a beaker, added 40 ml of distilled water, ultrasonically dispersed for 15 min, and then magnetically stirred for 0.5 h to obtain a white suspension A;

[0038] 2) Add 14 ml of NaF aqueous solution to the suspension A with a concentration of 2 mol / L, stir magnetically to fully mix the rea...

Embodiment 2

[0042] The red light-emitting porous nanocrystalline material of europium-doped gadolinium fluoride sodium of the present invention comprises: NaGd 1-x Eu x f 4 ,in x = 2 mol %. Its concrete preparation steps are as follows:

[0043] 1) Measure 9.8 ml of Gd(NO 3 ) 3 solution (0.4 mol / L) and 0.8 ml of Eu(NO 3 ) 3 Solution (0.1 mol / L concentration) was dissolved in 180 ml distilled water to obtain [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 ] Mix the solution, take out 30 ml and keep it for later use. Add 3.5 g of urea to the mixed solution, heat at 90°C for 2.5 h, and slowly form a white precipitate. The resulting white precipitate was centrifuged and washed twice with distilled water, then transferred to a beaker, added 30 ml of distilled water, ultrasonically dispersed for 18 min, and then magnetically stirred for 0.5 h to obtain a white suspension A;

[0044] 2) Add 8 ml of NaF aqueous solution to the suspension A with a concentration of 4 mol / L, stir magnetically to fully mix t...

Embodiment 3

[0049] The red light-emitting porous nanocrystalline material of europium-doped gadolinium fluoride sodium of the present invention comprises: NaGd 1-x Eu x f 4 ,in x = 8 mol%. Its concrete preparation steps are as follows:

[0050] 1) Measure 9.2 ml of Gd(NO 3 ) 3 solution (0.4 mol / L) and 1.6 ml of Eu(NO 3 ) 3 Solution (0.2 mol / L concentration) was dissolved in 200 ml distilled water to obtain [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 ] Mix the solution, take out 35 ml and keep it for later use. Add 4 g of urea to the mixed solution, heat at 90 °C for 3 h, and slowly form a white precipitate. The resulting white precipitate was centrifuged and washed once with distilled water, then transferred to a beaker, added 30 ml of distilled water, ultrasonically dispersed for 20 min, and then magnetically stirred for 0.5 h to obtain a white suspension A;

[0051] 2) Add 15 ml of NaF aqueous solution to suspension A with a concentration of 2 mol / L to fully mix the reactants to obtain whit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material, relating to a light-emitting nano material of which the nominal composition is NaGd[1-x]EuxF4 (x=0-10mol%). The red light-emitting porous nanocrystal material has the advantages of favorable dispersity, controllable crystal form structure and shape, high fluorescence intensity, low rare-earth consumption due to porous structure, energy saving and the like. The preparation technique is simple and does not need any surfactant; and the whole reaction is carried out in the water solution without using any organic solvent, so the method is economical and environment-friendly and is convenient for industrial production.

Description

Technical field: [0001] [0002] Background technique: [0003] 4 4 4 4 4 [0004] 3+ 3+ 3+ 3+ 3+ 3+ 3+ 3+ 4 3+ 4 3+ 3+ 3+ 3+ [0005] 4 4 4 4 [0006] Invention content: [0007] [0008] [0009] [0010] 1-x x 4 x [0011] 3 Cure 3 3 Cure 3 3 Cure 3 3 Cure 3 3+ 3+ 3+ [0012] 3+ [0013] 3 Cure 3 3 Cure 3 [0014] [0015] [0016] 3 Cure 3 3 Cure 3 [0017] [0018] [0019] [0020] 3 Cure 3 3 Cure 3 - - [0021] [0022] 3+ 3+ [0023] [0024] Attachment description [0025] figure 1 [0026] figure 2 [0027] image 3 [0028] Figure 4 [0029] Figure 5 Detailed ways: [0030] [0031] Example 1: [0032] 1-x x 4 ,in x [0033] 3 Cure 3 3 Cure 3 3 Cure 3+Eu (no 3 Cure 3 ] Mixed solution, take out 25 mL for use.Add 3 g urea to the mixed solution and heat for 2 h at 90 ° C to form a white precipitation slowly.Settle the white sedimentary centrifugation, wash it with distilled water once, then transfer it to the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85B82Y20/00B82Y40/00
Inventor 缪菊红苏静赖敏黄杰孙思明
Owner 江苏晶曌半导体有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap