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Synthesis method of Sr2CeO4 luminescent material doped with two rare earth elements Eu<3+> and Re

A technology of rare earth elements and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of low reaction temperature, cumbersome steps, and long duration, and achieve high luminous efficiency, uniform particle size, and uniform distribution.

Inactive Publication Date: 2014-03-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the preparation process of the first three, the steps are cumbersome and the duration is long, while the combustion method requires a short time, which not only saves a lot of energy, but also has fast reaction speed, high efficiency, high purity, and low reaction temperature, so it not only has sol - Advantages of methods such as gel, but also safe and fast

Method used

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  • Synthesis method of Sr2CeO4 luminescent material doped with two rare earth elements Eu&lt;3+&gt; and Re
  • Synthesis method of Sr2CeO4 luminescent material doped with two rare earth elements Eu&lt;3+&gt; and Re
  • Synthesis method of Sr2CeO4 luminescent material doped with two rare earth elements Eu&lt;3+&gt; and Re

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Experimental program
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Embodiment 1

[0023] 1) First, the Eu 2 o 3 and Pr 4 o 7 Be respectively dissolved in nitric acid to make Eu and Pr ion concentration be respectively the nitric acid solution of Eu and the nitric acid solution of Re of 0.1mol / L;

[0024] 2) Secondly, according to the chemical composition Sr 2 Eu 0.01 Re x CeO 4 Ce(NO 3 ) 3 、Sr 2 (NO 3 ) 2 1. The nitric acid solution of Eu and the nitric acid solution of Re are mixed to make mixed solution A, wherein X=0.003;

[0025] 3) Then, add urea and boric acid to mixed solution A to obtain mixed solution B, wherein the molar ratio of strontium nitrate to cerium nitrate, boric acid and urea is 2:1:0.01:1;

[0026] 4) Put the mixed solution B in a muffle furnace to react at 500°C for 3-5 minutes, then sinter at 700°C, cool and grind until doped with two rare earth elements Eu 3+ and Re's Sr 2 CeO 4 Luminescent material.

Embodiment 2

[0028] 1) First, the Eu 2 o 3 and Pr 4 o 7 Be respectively dissolved in nitric acid to make Eu and Pr ion concentration be respectively the nitric acid solution of Eu and the nitric acid solution of Re of 0.1mol / L;

[0029] 2) Secondly, according to the chemical composition Sr 2 Eu 0.01 Re x CeO 4 Ce(NO 3 ) 3 、Sr 2 (NO 3 ) 2 1. The nitric acid solution of Eu and the nitric acid solution of Re are mixed to make mixed solution A, wherein X=0.006;

[0030] 3) Then, add urea and boric acid to mixed solution A to obtain mixed solution B, wherein the molar ratio of strontium nitrate to cerium nitrate, boric acid and urea is 2:1:0.05:6;

[0031] 4) Put the mixed solution B in a muffle furnace to react at 600°C for 3-5 minutes, then sinter at 800°C, cool and grind until doped with two rare earth elements Eu 3+ and Re's Sr 2 CeO 4 Luminescent material.

Embodiment 3

[0033] 1) First, the Eu 2 o 3 and Pr 4 o 7 Be respectively dissolved in nitric acid to make Eu and Pr ion concentration be respectively the nitric acid solution of Eu and the nitric acid solution of Re of 0.1mol / L;

[0034] 2) Secondly, according to the chemical composition Sr 2 Eu 0.01 Re x CeO 4 Ce(NO 3 ) 3 、Sr 2 (NO 3 ) 2 1. The nitric acid solution of Eu and the nitric acid solution of Re are mixed to make mixed solution A, wherein X=0.01;

[0035] 3) Then, add urea and boric acid to mixed solution A to obtain mixed solution B, wherein the molar ratio of strontium nitrate to cerium nitrate, boric acid and urea is 2:1:0.08:8;

[0036] 4) Put the mixed solution B in a muffle furnace to react at 500°C for 3-5 minutes, then sinter at 900°C, cool and grind until doped with two rare earth elements Eu 3+ and Re's Sr2 CeO 4 Luminescent material.

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Abstract

The invention relates to a synthesis method of a Sr2CeO4 luminescent material doped with two rare earth elements Eu<3+> and Re. The luminescent material is prepared through combustion reaction by taking strontium nitrate and cerous nitrate as raw materials, boric acid as a cosolvent, urea as a reducing agent and Eu2O3 as an activator. The luminescent material has the grain size of 14.8-32nm, belonging to a nano-scale luminescent material; and the maximal excitation wavelength is 293nm and the maximal emission wavelength is 465nm.

Description

technical field [0001] The invention relates to a synthesis method of a luminescent material, in particular to a method for doping two kinds of rare earth elements Eu 3+ and Re's Sr 2 CeO 4 Synthetic methods of luminescent materials. Background technique [0002] With the rapid development of the economy, people pay more and more attention to the awareness of environmental protection, so the green materials with environmental protection and energy saving are getting more and more attention from people, and Sr 2 CeO 4 The new luminescent material is a photoluminescent "green" material with energy storage and energy saving. It can produce high luminous efficiency after being excited by ultraviolet rays, X-rays or cathode rays at room temperature. It has the functions of indicating lighting and decorative lighting, and has a very wide range of applications application prospects. [0003] Traditional sulfide emitters are easily oxidized in the air, have poor chemical stabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
Inventor 樊国栋赵琪张昭程蝉
Owner SHAANXI UNIV OF SCI & TECH