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High-brightness nano strontium-aluminate long-afterglow luminous material and preparation method and application thereof

A luminescent material, nano-aluminum technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of expensive surfactants, impure product chromaticity, limited application fields, etc., achieve long afterglow time, reduce calcination temperature, Energy saving effect

Inactive Publication Date: 2012-10-03
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has disadvantages
Firstly, this method uses expensive surfactants, and the production cost is relatively high; secondly, the product obtained is impure, and the obtained product is SrAl 2 o 4 and Sr 3 Al 2 o 6 Mixtures, resulting in impure color of the product; again, the size of the prepared product is relatively large, which limits its application field

Method used

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  • High-brightness nano strontium-aluminate long-afterglow luminous material and preparation method and application thereof
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  • High-brightness nano strontium-aluminate long-afterglow luminous material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Weigh 0.005 mol of strontium acetate hemihydrate, 0.01 mol of basic aluminum acetate, 0.0004 mol of europium acetate, 0.0008 mol of dysprosium acetate, and 0.020 mol of urea in a reaction vessel, then add 80 ml of absolute ethanol to it, and ultrasonically ( Model: SCQ-5201, Shanghai Shengyan Ultrasonic Instrument Co., Ltd.) After dispersing for 10 minutes, stir and dissolve, put the above solution in a closed reaction kettle, and keep it at 160°C for 6 hours to obtain a white product;

[0034] (2) Cool the white product obtained in step (1); then filter and wash the cooled white product with deionized water and ethanol, and dry at 50°C for 6 hours to obtain the precursor;

[0035] (3) Annealing the precursor obtained in step (2) in a reducing atmosphere at 950° C. for 3 hours to prepare a strontium aluminate long-lasting luminescent material.

Embodiment 2

[0037](1) Weigh 0.01 mol of strontium acetate hemihydrate, 0.025 mol of basic aluminum acetate, 0.0005 mol of europium acetate, 0.0009 mol of dysprosium acetate, and 0.025 mol of urea in a reaction vessel, then add 85 ml of absolute ethanol to it, and ultrasonically ( The model is the same as Example 1.) After dispersing for 15 minutes, stir and dissolve, put the above solution in a closed reaction kettle, and keep it at 160°C for 12 hours to obtain a white product;

[0038] (2) Cool the white product obtained in step (1); then filter and wash the cooled white product with deionized water and ethanol, and dry at 70°C for 7 hours to obtain the precursor;

[0039] (3) Annealing the precursor obtained in step (2) in a reducing atmosphere at 1050° C. for 4 hours to prepare a strontium aluminate long-lasting luminescent material.

Embodiment 3

[0041] (1) Weigh 0.01 mol of strontium acetate hemihydrate, 0.030 mol of basic aluminum acetate, 0.0006 mol of europium acetate, 0.0010 mol of dysprosium acetate, and 0.060 mol of urea in a reaction vessel, then add 85 ml of absolute ethanol to it, and ultrasonically ( The model is the same as Example 1.) After dispersing for 15 minutes, stir and dissolve, put the above solution in a closed reaction kettle, and keep it at 180°C for 12 hours to obtain a white product;

[0042] (2) Cool the white product obtained in step (1); then filter and wash the cooled white product with deionized water and ethanol, and dry at 80°C for 8 hours to obtain the precursor;

[0043] (3) Annealing the precursor obtained in step (2) in a reducing atmosphere at 1150°C for 4 hours to prepare a strontium aluminate long-lasting luminescent material.

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Abstract

The invention discloses high-brightness nano strontium-aluminate long-afterglow luminous material and a preparation method and application thereof; the preparation method comprises the following steps: mixing strontium acetate semihydrate, aluminum acetate basic, europium acetate, dysprosium acetate and urea according to a mol ratio (0.005-0.02): (0.01-0.04): (0.0004-0.0008): (0.0008-0.0012): (0.02-0.08) and preparing the high-brightness nano strontium-aluminate long-afterglow luminous material through an alcohol-heat synthesis-burning method. Compared with a traditional high-temperature solid-phase method, pure-phase SrA12O4:Eu<2+>,Dy<3+> can be obtained at 1150 degrees centigrade by the preparation method provided by the invention; a burning temperature is reduced greatly; energy source is saved; prepared strontium-aluminate long-afterglow luminous material has good luminous strength and relatively long afterglow time; the preparation method provided by the invention is characterized by safe and nontoxic use, simple and easy operation, low cost, high efficiency and easy industrial application.

Description

technical field [0001] The invention belongs to the field of inorganic nanometer materials, in particular to a high-brightness nano-strontium aluminate long-lasting luminescent material and its preparation method and application. Background technique [0002] High-brightness long-lasting luminescent material is a kind of photoinduced energy storage functional material, which is widely used in low-light lighting, emergency indication, architectural decoration and arts and crafts, information storage and high-energy ray detection and other fields. SrAl 2 o 4 :Eu 2+ , Dy 3+ It is a rare earth ion doped long afterglow luminescent material based on alkaline earth aluminate. Its excitation bandwidth can be excited under various light sources such as ultraviolet rays and fluorescent lamps; the afterglow time is long, up to 10 hours or more; it can be widely used in electronics, Electrical appliances, transportation, energy and other aspects. Since 1993, there have been reports...

Claims

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Application Information

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IPC IPC(8): C09K11/64
Inventor 薛志萍刘应亮邓苏青
Owner JINAN UNIVERSITY
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