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Preparation method for gold/platinum surface loaded Sr2MgSi2O7: Eu<2+>, Dy<3+> long-afterglow light-emitting 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, and achieve improved long-lasting luminescent properties, simple synthesis process, good society and The effect of economic benefits

Inactive Publication Date: 2018-09-14
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 object of the invention is to provide a gold / platinum surface loading Sr 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 for gold/platinum surface loaded Sr2MgSi2O7: Eu&lt;2+&gt;, Dy&lt;3+&gt; long-afterglow light-emitting material
  • Preparation method for gold/platinum surface loaded Sr2MgSi2O7: Eu&lt;2+&gt;, Dy&lt;3+&gt; long-afterglow light-emitting material
  • Preparation method for gold/platinum surface loaded Sr2MgSi2O7: Eu&lt;2+&gt;, Dy&lt;3+&gt; long-afterglow light-emitting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1. Add 8g Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ Pour the luminescent powder into alcohol, make the alcohol submerge the luminescent powder, sonicate in an ultrasonic instrument for 5 minutes, filter after the ultrasonic is completed, and place in an oven to dry at 100°C for 20 minutes;

[0036] Step 2. Add HAuCl 4 And H 2 PtCl 6 Dissolve in deionized water to form uniform solution A, in which HAuCl 4 And H 2 PtCl 6 The molar concentration is 0.01mmol L -1 ;

[0037] Step 3. The HAuCl obtained in step 2 4 / H 2 PtCl 6 Solution A, acetic acid and deionized water are mixed according to 1:1:500 to form uniform solution B;

[0038] Step 4. Pour 1g of luminescent powder obtained in step 1 into 8ml of solution B obtained in step 3, make the solution submerge the luminescent powder, stir for 10 minutes, then place in an ultrasonic instrument, and perform ultrasonic light reduction under ultraviolet light for 2 hours ;

[0039] Step 5. Filter the solution obtained in Step 4, wash it with ...

Embodiment 2

[0041] Step 1. Add 6g Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ Pour the luminescent powder into alcohol, make the alcohol submerge the luminescent powder, sonicate in an ultrasonic instrument for 5 minutes, filter after the ultrasonic is completed, and place in an oven to dry at 100°C for 20 minutes;

[0042] Step 2. Add HAuCl 4 And H 2 PtCl 6 Dissolve in deionized water to form uniform solution A, in which HAuCl 4 And H 2 PtCl 6 The molar concentration is 0.03mmol L -1 ;

[0043] Step 3. The HAuCl obtained in step 2 4 / H 2 PtCl 6 Solution A, acetic acid and deionized water are mixed according to 1:2:500 to form uniform solution B;

[0044] Step 4. Pour 2g of luminescent powder obtained in step 1 into 10ml of solution B obtained in step 3. Make the solution submerge the luminescent powder, stir for 10 minutes, then place it in an ultrasonic instrument, and perform ultrasonic light reduction under ultraviolet light for 2 hours ;

[0045] Step 5. Filter the solution obtained in Step 4, wash it w...

Embodiment 3

[0047] Step 1. Add 3g Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ Pour the luminescent powder into alcohol, sonicate in an ultrasonic instrument for 7 minutes, filter after the sonication, and place in an oven to dry at 120°C for 18 minutes;

[0048] Step 2. Add HAuCl 4 And H 2 PtCl 6 Dissolve in deionized water to form uniform solution A, in which HAuCl 4 And H 2 PtCl 6 The molar concentration is 0.05mmol L -1 ;

[0049] Step 3. The HAuCl obtained in step 2 4 / H 2 PtCl 6 Solution A, acetic acid and deionized water are mixed according to 2:2:500 to form uniform solution B;

[0050] Step 4. Pour 1 g of luminescent powder obtained in step 1 into 15 ml of solution B obtained in step 3 and stir for 15 minutes, then place in an ultrasonic instrument, and perform ultrasonic light reduction for 2.5 hours under ultraviolet light irradiation;

[0051] Step 5. Filter the solution obtained in Step 4, wash it with alcohol twice, and dry it in an oven at 120°C for 15 minutes; that is, Sr supported on the surfa...

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Abstract

The invention discloses a preparation method for a gold / platinum surface loaded Sr2MgSi2O7: Eu<2+>, Dy<3+> long-afterglow light-emitting material. The preparation method comprises the following steps:adsorbing a layer of a mixed solution of HAuCl4 and H2PtCl6 for Sr2MgSi2O7: Eu<2+>, Dy<3+>, and generating gold particles and platinum particles loaded on the Sr2MgSi2O7: Eu<2+>, Dy<3+> under irradiation of ultraviolet light; and removing un-reacted HAuCl4 / H2PtCl6 and gold particles as well as platinum particles with relatively poor adsorbing ability through alcohol to obtain the gold / platinum surface loaded Sr2MgSi2O7: Eu<2+>, Dy<3+> long-afterglow light-emitting material. After being deposited by metal gold / platinum, the light-emitting powder is obviously reinforced in long-afterglow performance, so that initial brightness is improved by four times or above, and brightness of a slow attenuation process is improved by 1.5 times or above.

Description

Technical field [0001] The invention belongs to the technical field of luminescent materials, and specifically relates to a gold / platinum surface loaded with Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3 + Preparation method of long afterglow luminescent material. Background technique [0002] Long afterglow luminescent materials can absorb natural light, lights and other light sources, store energy, slowly release, and achieve continuous light emission. It is an important energy-saving and environmentally-friendly material, and has strong application prospects in radiation monitoring, biomedical, photocatalysis and other fields. [0003] At present, a new generation of long-lasting luminescent materials with better performance include aluminate and silicate long-lasting luminescent materials, especially Sr 2 MgSi 2 O 7 Long afterglow luminescent materials represented by silicates have strong water resistance and have a wide range of applications. However, for such long-lasting luminescent materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/59
CPCC09K11/7792
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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