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A kind of preparation method of multi-spectrum response luminescent material

A luminescent material and multi-spectrum technology, applied in the field of inorganic photoluminescent materials, can solve problems such as difficulty in meeting multiple uses, and achieve the effects of improving photoluminescence efficiency, improving universality, and low synthesis temperature

Active Publication Date: 2019-08-23
东莞市幸达服饰辅料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many types of rare earth photoluminescent materials. In order to achieve different functions, researchers often choose different material systems and different rare earth types. It is difficult for one rare earth photoluminescent material to meet the needs of multiple purposes.

Method used

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  • A kind of preparation method of multi-spectrum response luminescent material
  • A kind of preparation method of multi-spectrum response luminescent material
  • A kind of preparation method of multi-spectrum response luminescent material

Examples

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preparation example Construction

[0024] An embodiment of the present invention provides a method for preparing a multi-spectrum responsive luminescent material, including:

[0025] According to the general chemical formula of the multi-spectral response luminescent material (Yb 1-x-y Eu x Er y ) 2 o 2 The molar ratio in S will correspond to Yb(NO 3 ) 3 ·5H 2 O, Eu(NO 3 ) 3 ·6H 2 O and Er(NO 3 ) 3 ·5H 2 O is dissolved in absolute ethanol, that is, Yb(NO 3 ) 3 ·5H 2 O, Eu(NO 3 ) 3 ·6H 2 O and Er(NO 3 ) 3 ·5H 2 The molar ratio of the O three is (1-x-y): x: y, mixed to obtain a nitrate mixture.

[0026] It should be noted that the above-mentioned solvent dehydrated alcohol is dehydrated alcohol, as a solvent and provides a reaction site, so that Yb(NO 3 ) 3 ·5H 2 O, Eu(NO 3 ) 3 ·6H 2 O and Er(NO 3 ) 3 ·5H 2 O can be completely dissolved, ensuring that Yb(NO 3 ) 3 ·5H 2 O, Eu(NO 3 ) 3 ·6H 2 O and Er(NO 3 ) 3 ·5H 2 O is fully dispersed in the absolute ethanol system and the th...

Embodiment 1

[0053] This embodiment provides a method for preparing a multi-spectrum responsive luminescent material. include:

[0054] 0.8893g of Yb(NO 3 ) 3 ·5H 2 O, 0.0045g of Eu(NO 3 ) 3 ·6H 2 O and 0.0044g of Er(NO 3 ) 3 ·5H 2 O, completely dissolved in 20ml of absolute ethanol, mixed evenly to make a nitrate mixture.

[0055] 4.0 g of polyvinylpyrrolidone and 0.2284 g of thiourea were completely dissolved in the above-mentioned nitrate mixed solution, and mixed uniformly to obtain a mixed reaction solution.

[0056] The mixed reaction solution was placed in an autoclave, reacted at 200° C. for 24 hours, and then cooled down to room temperature naturally to obtain the reaction product, which was centrifuged and separated.

[0057] The reaction product was washed three times with absolute ethanol, and then dried at 50° C. to obtain a multi-spectrum response luminescent material.

Embodiment 2

[0059] This embodiment provides a method for preparing a multi-spectrum responsive luminescent material, including:

[0060] 0.8758g of Yb(NO 3 ) 3 ·5H 2 O, 0.0089g of Eu(NO 3 ) 3 ·6H 2 O and 0.0133g of Er(NO 3 ) 3 ·5H 2 O, completely dissolved in 21ml of absolute ethanol, mixed evenly to make a nitrate mixture.

[0061] 3.9 g of polyvinylpyrrolidone and 0.2664 g of thiourea were completely dissolved in the above-mentioned nitrate mixed solution, and mixed uniformly to obtain a mixed reaction solution.

[0062] The mixed reaction solution was placed in an autoclave, reacted at 210°C for 28 hours, and then cooled down to room temperature naturally to obtain the reaction product, which was centrifuged and separated.

[0063] The reaction product was washed 4 times with absolute ethanol, and dried at 55° C. to obtain a multi-spectrum response luminescent material.

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Abstract

The invention discloses a multispectral response light-emitting material and a preparation method thereof, and relates to the field of inorganic photoluminescence materials. The light-emitting material has the following general formula: (Yb1-x-yEuxEry)2O2S, wherein x is greater than or equal to 0.005 but is less than or equal to 0.02, and y is greater than or equal to 0.005 but is less than or equal to 0.02. The light-emitting material has extremely high light absorption and energy transfer efficiency, responds to light at different wave bands, and realizes multi-functionalization of a single light-emitting material. The preparation method of the light-emitting material comprises: according to the radio of (1-x-y) to x to y, dissolving Yb(NO3)3.5H2O, Eu(NO3)3.6H20 and Er(NO3)3.5H20 in absolute ethyl alcohol; adding polyvinylpyrrolidone and thiourea; and placing an obtained system in a high pressure reactor, performing heat preservation at 200-240DEG C for 24-40 hours, and cooling to room temperature. The method has low synthesis temperature, and is easy to operate.

Description

technical field [0001] The invention relates to the field of inorganic photoluminescent materials, in particular to a method for preparing a multi-spectrum response luminescent material. Background technique [0002] Inorganic photoluminescent materials rely on external light sources for irradiation to obtain energy, generate excitation and cause luminescence, and are functional materials with a wide range of uses. In recent years, the representatives of inorganic photoluminescent materials are rare earth ion luminescence and rare earth fluorescent materials. However, there are many types of rare earth photoluminescent materials. In order to achieve different functions, researchers often choose different material systems and different types of rare earths. It is difficult for a rare earth photoluminescent material to meet the needs of multiple purposes. Contents of the invention [0003] The purpose of the present invention is to provide a multi-spectrum response luminesc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/84
Inventor 韩朋德张鑫姚云锋张长森焦宝祥吴其胜张其土
Owner 东莞市幸达服饰辅料有限公司
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