Preparation method of nanometer silicate long afterglow luminous material

A nano-silicate, long-lasting luminescent technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of uneven distribution of activated ions, coarse particles, and reduced luminous intensity, and achieve uniform size, uniform distribution, and afterglow high brightness effect

Inactive Publication Date: 2007-04-18
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a nano-silicate long-lasting luminescent material and a preparation method thereof, so that nano-scale long-lasting luminescent materials can be prepared by using nano-synthesis technology, thereby solving the problem of existing long-lasting luminescent powders. Coarse body particles, and the activated ions cannot be evenly distributed in the matrix, which reduces the luminous intensity.

Method used

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  • Preparation method of nanometer silicate long afterglow luminous material

Examples

Experimental program
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Embodiment 1

[0021] Embodiment 1: to chemical composition prescription Sr 2-x-y MgSi 2 o 7 :Eu x , Dy y Among them, x=0.005, y=0.01, the obtained material is Sr 1.985 MgSi 2 o 7 :Eu 0.005 , Dy 0.01, H 3 BO 3 =0.2 mol of long-lasting luminescent material.

[0022] Weigh 0.0088gEu 2 o 3 and 0.0187gDy 2 o 3 Put into a beaker, add 3mL concentrated HNO 3 Dissolved to obtain Eu(NO 3 ) 3 and Dy(NO 3 ) 3 solution. Weigh 0.4030g MgO and dissolve in 8mL deionized water, and add 2mL concentrated HNO 3 Dissolution is carried out to obtain Mg(NO) 2 solution. Then weigh 4.228gSr(NO 3 ) 2 and 0.1236gH 3 BO 3 Dissolve in 20mL deionized water, and slowly add the above-mentioned nitrate solution into the mixed solution, mix thoroughly, and stir. In addition, measure 4.605mLSi(OC 2 h 5 ) 4 Dissolve in 10mL ethanol, and slowly add dropwise to the above mixed solution. Stir for 2 hours with a magnetic stirrer at 50° C., mix thoroughly and uniformly, and obtain a uniform and trans...

Embodiment 2

[0024] Embodiment 2: to chemical composition prescription Sr 2-x-y MgSi 2 o 7 :Eu x , Dy y Among them, x=0.005, y=0.0075, the obtained material is Sr 1.9875 MgSi 2 o 7 :Eu 0.005 , Dy 0.075 , H 3 BO 3 =0.1 mol of long-lasting luminescent material.

[0025] Weigh 0.0088gEu 2 o 3 and 0.0140gDy 2 o 3 Put into a beaker, add 2mL concentrated HNO 3 Dissolved to obtain Eu(NO 3 ) 3 and Dy(NO 3 ) 3 solution. Weigh 0.4030g MgO and dissolve in 8mL deionized water, and add 2mL concentrated HNO 3 Dissolution is carried out to obtain Mg(NO) 2 solution. Then weigh 4.233gSr(NO 3 ) 2 and 0.0618gH 3 BO 3 Dissolve in 50mL deionized water, and slowly add the above-mentioned nitrate solution into the mixed solution, mix thoroughly, and stir. Stir for 2 hours with a magnetic stirrer at 50° C., mix thoroughly and uniformly, and obtain a uniform and transparent mixed sol. In addition, measure 4.605mLSi(OC 2 h 5 ) 4 Dissolve in 10mL ethanol, and slowly add dropwise to the...

Embodiment 3

[0027] Embodiment 3: to chemical composition formula Sr 2-x-y MgSi 2 o 7 :Eu x , Dy y Among them, x=0.001, y=0.002, the obtained material is Sr 1.997 MgSi 2 o 7 :Eu 0.001 , Dy 0.002 , H 3 BO 3 =0.3 mol of long-lasting luminescent material.

[0028] Weigh 0.0018gEu 2 o 3 and 0.0037gDy 2 o 3 Put into a beaker, add 4mL concentrated HNO 3 Dissolved to obtain Eu(NO 3 ) 3 and Dy(NO 3 ) 3 solution. Weigh 0.4030g MgO and dissolve in 4mL deionized water, and add 1mL concentrated HNO 3 Dissolution is carried out to obtain Mg(NO) 2 solution. Then weigh 4.254gSr(NO 3 ) 2 and 0.1854gH 3 BO 3 Dissolve in 100mL deionized water, and slowly add the above-mentioned nitrate solution into the mixed solution, mix thoroughly, and stir. Other processes are the same as example 1.

[0029] The material of this example is light yellow in appearance. Tested by XRD, it shows that its phase composition is Sr 2 MgSi 2 o 7 . After being irradiated by visible light or ultravi...

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Abstract

This invention relates to the preparation of a nanometer silicate long persistence illuminate material, and this invention applies collosol-gelatum technology. Silicate is used as base material, and Eu2+ is used as activating agent, and Dy3+ is assistant activating agent, and boracic compounds is added to improve the performance of afterglow, so the invention is composed by silicate, Eu2+, Dy3+ and boracic compounds. Its molecular formula is Sr2-x-yMgSi2O7: Eux, Dyy, with 0.001 C09K 11 / 59 1 5 1 2006 / 11 / 8 1948426 2007 / 4 / 18 000000000 Tianjin Univ. Tianjin 300072 Ji Huiming Lv Ying Xu Mingxia wangli 12201 The Patent Agency of Tianjin University Qilitai, the City of Tianjin 300072

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a preparation method of nano silicate long afterglow luminescent materials. Background technique [0002] Long afterglow luminescent material is a new type of environmental protection and energy-saving material. It can store part of the energy after absorbing the energy of sunlight or light, and then slowly release the stored energy in the form of visible light. Can emit visible light for a long time. Therefore, photoluminescent long afterglow materials are also called light storage materials or luminous materials. Long afterglow luminescent materials have a wide range of commercial applications in the background lights of displays, sign lighting, luminous coatings, etc., so since their discovery in the early 20th century, research on material composition, research on preparation processes, and applications have all been developed rapidly. dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/59
Inventor 季惠明吕莹徐明霞
Owner TIANJIN UNIV
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