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Preparation method of LaB3O6: Eu3<+> luminescent material

A luminescent material, H3BO3 technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of shape, difficult control of particle size, need to improve luminous intensity, low product purity, etc., achieve good dispersion and simple preparation method , the effect of high luminous intensity

Inactive Publication Date: 2014-03-12
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For LaB 3 o 6 :Eu 3+ Luminescent material, its preparation method is the traditional high-temperature solid-phase method, that is, lanthanum oxide (La 2 o 3 ), boric acid (H 3 BO 3 ) and europium oxide (Eu 2 o 3 ) as raw material, mixed and ground and then roasted at high temperature (1000°C). This method has disadvantages such as low product purity, serious agglomeration, difficult control of shape and particle size, and luminous intensity to be improved.

Method used

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  • Preparation method of LaB3O6: Eu3&lt;+&gt; luminescent material
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  • Preparation method of LaB3O6: Eu3&lt;+&gt; luminescent material

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Embodiment 1

[0026] 1. Preparation of precursor

[0027] 0.33g La 2 o 3 , 0.93g H 3 BO 3 and 0.0032g Eu 2 o 3 Mix well, La 2 o 3 with H 3 BO 3 、Eu 2 o 3 The molar ratio is 1:15:0.01, ground into powder, placed in a polytetrafluoroethylene-lined stainless steel autoclave, reacted for 3 days at 200 ° C, and the reaction product was washed 3 times with double distilled water and absolute ethanol successively. Place in an oven and dry at 40°C for 24 hours to obtain a precursor.

[0028] 2. Preparation of LaB 3 o 6 :Eu 3+ Luminescent material

[0029] Put the precursor obtained in step 1 in a muffle furnace, bake at 900°C for 6 hours, and cool naturally to room temperature to obtain LaB 3 o 6 :Eu 3+ Luminescent material.

Embodiment 2

[0031] The preparation LaB of present embodiment 3 o 6 :Eu 3+ In Step 2 of the luminescent material, the precursor obtained in Step 1 was placed in a muffle furnace, baked at 800°C for 6 hours, and cooled to room temperature naturally. The other steps were the same as in Example 1 to obtain LaB 3 o 6 :Eu 3+ Luminescent material.

Embodiment 3

[0033] The preparation LaB of present embodiment 3 o 6 :Eu 3+ In Step 2 of the luminescent material, the precursor obtained in Step 1 is placed in a muffle furnace, baked at 1000°C for 6 hours, and cooled to room temperature naturally. The other steps are the same as in Example 1 to obtain LaB 3 o 6 :Eu 3+ Luminescent material.

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Abstract

The invention discloses a preparation method of an LaB3O6: Eu3<+> luminescent material. The preparation method comprises the following steps: reacting La2O3, H3BO3 and Eu2O3 as raw materials in a stainless steel high-pressure kettle with a polytetrafluoroethylene lining at the temperature of 180-280 DEG C by using a boric acid melting method so as to prepare a precursor, and then baking the precursor at the temperature of 800-1000 DEG C so as to obtain LaB3O6: Eu3<+> luminescent material. The preparation method is simple; the prepared LaB3O6: Eu3<+> luminescent material has good dispersion, high purity and high luminous intensity, is small in particle size and can be applied to different fields such as display, development, light sources and medical science.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, in particular to a LaB with high luminous intensity 3 o 6 :Eu 3+ Preparation method of luminescent material. Background technique [0002] Since borate-based luminescent materials have the characteristics of simpler synthesis process, stable chemical properties, good color rendering, and high luminous efficiency than silicate, aluminate and phosphate-based luminescent materials, they are widely used in display imaging, light sources, optoelectronics, etc. It has been widely used in different fields such as science and medicine. [0003] At present, the research on borate-based luminescent materials mainly uses high-temperature solid-phase method, sol-gel method and other methods to synthesize different types of borate-based luminescent materials. The common substrates are: rare earth metal borates, alkaline earth Metal borates, rare earth and alkaline earth metal complex borates...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 刘志宏王霞李连庆
Owner SHAANXI NORMAL UNIV