Preparation method of metal silver surface supported M2MgSi2O7:Eu<2+>, Dy<3+> long-lasting phosphor material

A long-lasting luminescent and surface-loaded technology, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of unsatisfactory luminescent properties of long-lasting luminescent materials, improve the long-lasting luminescent properties, simple synthesis process, and facilitate large-scale industrialization The effect of mass production

Inactive Publication Date: 2018-11-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this invention is to provide a kind of metallic silver surface loading M 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ The preparation method of the long afterglow luminescent material solves the problem that the luminous performance of the existing long afterglow luminescent material is not ideal

Method used

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  • Preparation method of metal silver surface supported M2MgSi2O7:Eu&lt;2+&gt;, Dy&lt;3+&gt; long-lasting phosphor material
  • Preparation method of metal silver surface supported M2MgSi2O7:Eu&lt;2+&gt;, Dy&lt;3+&gt; long-lasting phosphor material
  • Preparation method of metal silver surface supported M2MgSi2O7:Eu&lt;2+&gt;, Dy&lt;3+&gt; long-lasting phosphor material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A preparation of Sr loaded on the surface of metallic silver 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ The long afterglow glow powder method.

[0036] Step 1, 1g Sr 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Pour the luminescent powder into alcohol, so that the alcohol submerges the luminescent powder, sonicate in the ultrasonic instrument for 5 minutes, filter after the ultrasonic is completed, and dry in an oven at 100°C for 20 minutes;

[0037] Step 2, silver nitrate is dissolved in deionized water to form a homogeneous solution, wherein the molar concentration of silver nitrate is 0.01mmol L -1 ;

[0038] Step 3, the silver nitrate solution, acetic acid and deionized water obtained in step 2 are mixed according to 1:1:500 to form a uniform solution;

[0039] Step 4, pour the luminescent powder obtained in step 1 into the solution obtained in step 3, submerge the solution into the luminescent powder, stir for 10 minutes, then place it in an ultrasonic instrument, and perform ultraso...

Embodiment 2

[0042] A preparation of Sr loaded on the surface of metallic silver 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ The long afterglow glow powder method.

[0043] Step 1, 1g Sr 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Pour the luminescent powder into alcohol, so that the alcohol submerges the luminescent powder, sonicate in the ultrasonic instrument for 5 minutes, filter after the ultrasonic is completed, and dry in an oven at 100°C for 20 minutes;

[0044] Step 2, silver nitrate is dissolved in deionized water to form a homogeneous solution, wherein the molar concentration of silver nitrate is 0.03mmol L -1 ;

[0045] Step 3, the silver nitrate solution, acetic acid and deionized water obtained in step 2 are mixed according to 1:2:500 to form a uniform solution;

[0046] Step 4, pour the luminescent powder obtained in step 1 into the solution obtained in step 3, submerge the solution into the luminescent powder, stir for 10 minutes, then place it in an ultrasonic instrument, and perform ultraso...

Embodiment 3

[0049] A kind of Ca that prepares metallic silver surface loading 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ The long afterglow glow powder method.

[0050] Step 1, 1g Ca 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Pour the luminescent powder into the alcohol, so that the alcohol submerges the luminescent powder, sonicate in the ultrasonic instrument for 8 minutes, filter after the ultrasonic is completed, and dry in an oven at 120°C for 18 minutes;

[0051] Step 2, silver nitrate is dissolved in deionized water to form a homogeneous solution, wherein the molar concentration of silver nitrate is 0.05mmol L -1 ;

[0052] Step 3, the silver nitrate solution, acetic acid and deionized water obtained in step 2 are mixed according to 2:2:500 to form a uniform solution;

[0053] Step 4, pour the luminescent powder obtained in step 1 into the solution obtained in step 3, submerge the solution into the luminescent powder, stir for 15 minutes, then place it in an ultrasonic instrument, and perform ultra...

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Abstract

The invention discloses a preparation method of a metal silver surface supported M2MgSi2O7:Eu<2+>, Dy<3+> long-lasting phosphor material (M is one or two of Ca, Sr and Ba). The preparation method comprises the following steps: adsorbing a layer of silver nitrate solution by M2MgSi2O7:Eu<2+>, Dy<3+>, and generating silver particles supported on M2MgSi2O7:Eu<2+>, Dy<3+> under ultraviolet irradiation; washing the unreacted silver nitrate and silver particles having poor adsorption capacity with alcohol, thereby obtaining the silver surface supported M2MgSi2O7:Eu<2+>, Dy<3+> long-lasting phosphormaterial. After the luminescent powder prepared according to the method disclosed in the invention is subjected to surface metal silver deposition, the absorption light intensity and waveband are improved, the afterglow property is obviously enhanced, the initial brightness is improved by 8 times or more, and the slow decay brightness is improved by 2 times or more.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, in particular to a metal silver surface loading M 2 MgSi 2 o 7 : Eu 2+ , Dy 3 + A preparation method of a long afterglow luminescent material. Background technique [0002] Long afterglow luminescent material is an energy-saving and environmentally friendly material that can continue to emit light for a long period of time after being irradiated by an external light source. Long-lasting luminescent materials have characteristic absorption peaks and emission peaks, and can store energy, so they have strong application prospects in radiation monitoring, biomedicine, photocatalysis and other fields. [0003] m 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Long afterglow luminescent material (M is one or two kinds of Ca, Sr, Ba) emits green light, the afterglow time is more than 20h, and has excellent luminescent performance. However, for such long-lasting luminescent materials, the low quan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/59C09K11/02
CPCC09K11/025C09K11/7792
Inventor 海鸥任强武秀兰焦叶辉林飞白文妮
Owner SHAANXI UNIV OF SCI & TECH
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