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Strontium aluminate luminous material and controllable synthesis method thereof

A technology of luminescent materials and synthesis methods, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems affecting the shape and characteristics of materials, and achieve the effects of low cost, simple method and energy saving

Inactive Publication Date: 2010-09-15
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method can only produce long afterglow materials that emit red light; in addition, the annealing temperature is as high as 1400 ° C, which can easily affect the morphology of the material

Method used

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  • Strontium aluminate luminous material and controllable synthesis method thereof
  • Strontium aluminate luminous material and controllable synthesis method thereof
  • Strontium aluminate luminous material and controllable synthesis method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: the preparation steps are as follows, 1), 0.006 mole aluminum nitrate Al(NO 3 ) 3 9H 2 O, 0.009 mole strontium nitrate Sr(NO 3 ) 2 , 0.00002 mole europium nitrate Eu(NO 3 ) 3 , 0.00003 mole dysprosium nitrate Dy(NO 3 ) 3 , 0.02 mole urea CO(NH 2 ) 2Put it in a beaker, add 40-50 ml of distilled water to it, stir to dissolve, put the above solution in a closed reaction kettle, and keep it warm at 120-200°C for 10-14 hours to obtain a white product. 2) The cooled white product is filtered and washed with distilled water and ethanol, and dried at 50-70° C. for 5-6 hours to obtain a precursor. 3) Anneal the precursor in an air atmosphere at 900°C for 2 to 4 hours to obtain the following: figure 1 (a), image 3 (a) The strontium aluminate luminescent material shown.

Embodiment 2

[0029] Embodiment 2: the preparation steps are as follows, 1), 0.006 mole aluminum nitrate Al(NO 3 ) 3 9H 2 O, 0.009 mole strontium nitrate Sr(NO 3 ) 2 , 0.00002 mole europium nitrate Eu(NO 3 ) 3 , 0.00003 mole dysprosium nitrate Dy(NO 3 ) 3 , 0.02 mole urea CO(NH 2 ) 2 Put it in a beaker, add 40-60 ml of distilled water to it, stir to dissolve, put the above solution in a closed reaction kettle, and keep it warm at 120-200°C for 10-14 hours to obtain a white product. 2) The cooled white product is filtered and washed with distilled water and ethanol, and dried at 50-70° C. for 5-6 hours to obtain a precursor. 3) Anneal the precursor in an air atmosphere at 1000°C for 2 to 4 hours to obtain the following: figure 1 (b), image 3 (b) The strontium aluminate luminescent material shown.

Embodiment 3

[0030] Embodiment 3: the preparation steps are as follows, 1), 0.006 mole aluminum nitrate Al(NO 3 ) 3 9H 2 O, 0.009 mole strontium nitrate Sr(NO 3 ) 2 , 0.00002 mole europium nitrate Eu(NO 3 ) 3 , 0.00003 mole dysprosium nitrate Dy(NO 3 ) 3 , 0.02 mole urea CO(NH 2 ) 2 Put it in a beaker, add 40-50 ml of distilled water to it, stir to dissolve, put the above solution in a closed reaction kettle, and keep it warm at 120-200°C for 10-14 hours to obtain a white product. 2) The cooled white product is filtered and washed with distilled water and ethanol, and dried at 50-70° C. for 5-6 hours to obtain a precursor. 3) Anneal the precursor in an air atmosphere at 1100°C for 2 to 4 hours to obtain the following: figure 1 (c), image 3 The strontium aluminate luminescent material shown in (c).

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Abstract

The invention discloses a strontium aluminate luminous material and a controllable synthesis method thereof. According to the method, Al(NO3)3.9H2O, Sr(NO3)2, CO(NH2)2, C6H5Na3O7.2H2O, Eu2O3, Dy2O3 and HNO3 are used as raw materials. The method is a hydrothermal synthesis-calcining two-step method, and comprises the following steps of: (1) dissolving the Sr(NO3)2 and the Al(NO3)3.9H2O into distilled water respectively to form nitrate solution, taking the nitrate solution with metering, fully mixing the nitrate solution, then adding europium nitrate and dysprosium nitrate into the mixed nitrate solution, mixing the solution and CO(NH2)2 or surfactant in a certain ratio, placing the mixture into a closed reaction kettle, dissolving the mixture with stirring, and preserving the heat at certain temperature to obtain a precursor; and (2) filtering and drying the precursor, and annealing the precursor for several hours in an air atmosphere and a reducing atmosphere at different temperatures respectively to obtain the nano aluminate luminous material. The hydrothermal synthesis-calcining two-step method for preparing the strontium aluminate luminous material can effectively control the form and luminous color of the product; and the strontium aluminate luminous material has good dispersion property and expands the application field of luminous materials.

Description

technical field [0001] The invention relates to a preparation method of a nano-luminescent material, specifically a strontium aluminate luminescent material. Background technique [0002] Rare-earth ion-doped inorganic phosphors have attracted widespread attention due to their extraordinary luminescent properties and applications, and can be used in many aspects such as lighting industry, radiation dose, X-ray imaging and color display. Compared with luminescent materials based on sulfide, europium-doped strontium aluminate shows good stability, long afterglow time and high quantum efficiency. In SrO-Al 2 o 3 In the system, many non-stoichiometric compounds exist, such as Sr 3 Al 2 o 6 , SrAl 2 o 4 ,Sr 4 Al 4 o 25 , SrAl 4 o 7 and SrAl 12 o 19 . The current preparation status is high-temperature solid-phase synthesis (SrCO 3 and Al 2 o 3 ), although the preparation method is simple, the product particles prepared by production and preparation are relatively...

Claims

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Application Information

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IPC IPC(8): C09K11/64
Inventor 陈祥迎鲍时萍吴烨钦计娉婷杨保俊吴玉程
Owner HEFEI UNIV OF TECH
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