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Blue-green long-afterglow luminescent material and preparation method thereof

A technology for long-lasting luminescent and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of poor afterglow performance of luminescent materials, and achieve the effects of improved luminescent performance, low synthesis cost, and stable chemical properties

Inactive Publication Date: 2016-09-28
MINNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies use expensive rare earth elements as the luminescent center of the luminescent material or introduce some expensive rare earth elements as sensitizers in order to improve the luminescent performance of the material, such as the luminescent material Ba disclosed in the invention patent (CN201010516567) 3.992-x Si 6 o 16 :Eu 0.008 , R x and the luminescent material Ca disclosed in the invention patent (CN101899298A) (0.8-2x) Zn 0.2 TiO 3 :xPr 3+ , xNa + , the disclosed invention technology and reported documents use transition metal ions or Zr 4+ The afterglow properties of the luminescent materials used as luminescent centers are not good. The document J. Rare Earths 22(1)(2004) 83 reported that β-Zn 3 (PO 4 ) 2 :Zr 4+ The afterglow time of blue-green long-lasting luminescent materials is only half an hour, while the afterglow time of long-lasting luminescent materials with transition metal ions as the luminescent center is very short, such as literature (Journal of Zhangzhou Normal University (Natural Science Edition), 4 (2006) P93 ) reported Cu + Sr as a luminescent center 2 ZnSi 2 o 7 ： Cu + Afterglow time is only 2 hours

Method used

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  • Blue-green long-afterglow luminescent material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] A blue-green long-lasting luminescent material whose chemical expression is Mn 0.1 Zr 0.95 P2 o 7 , the preparation method comprises the following steps:

[0023] (1) Firstly, accurately weigh the raw material ZrOCl according to the stoichiometric ratio 2 ·8H 2 O, (NH 4 ) 2 HPO 4 and MnCO 3 ;

[0024] (2) Then weigh H 3 BO 3 and citric acid, H 3 BO 3 The molar ratio of citric acid to luminescent material is 0.6:1, and the molar ratio of citric acid to luminescent material is 2.5:1;

[0025] (3) put ZrOCl 2 ·8H 2 O, (NH 4 ) 2 HPO 4 、H 3 BO 3 Add water and citric acid to be mixed with the mixture solution A that mass percentage concentration is 22wt%; In MnCO 3 Add the nitric acid of 3mol / L to and make it dissolve completely, then add distilled water and be mixed with the clarification solution B that mass percent concentration is 22wt%;

[0026] (4) Mix solution A and solution B prepared in step (3) evenly, adjust the pH value of the solution to 2 wi...

Embodiment 2

[0030] A blue-green long-lasting luminescent material whose chemical expression is Mn 0.005 Zr 0.9975 P 2 o 7 , the preparation method comprises the following steps:

[0031] (1) Firstly, accurately weigh the raw material ZrOCl according to the stoichiometric ratio 2 ·8H 2 O, (NH 4 ) 2 HPO 4 and MnCO 3 ;

[0032] (2) Then weigh H 3 BO 3 and citric acid, H 3 BO 3 The molar ratio of citric acid to luminescent material is 0.2:1, and the molar ratio of citric acid to luminescent material is 0.8:1;

[0033] (3) put ZrOCl 2 ·8H 2 O, (NH 4 ) 2 HPO 4 、H 3 BO 3 Adding water with citric acid is mixed with the mixture solution A that mass percentage concentration is 15wt%; In MnCO 3 Add the nitric acid of 3mol / L to and make it dissolve completely, then add distilled water and be mixed with the clarification solution B that mass percent concentration is 15wt%;

[0034] (4) Mix solution A and solution B prepared in step (3) evenly, adjust the pH value of the solution ...

Embodiment 3

[0038] A blue-green long-lasting luminescent material whose chemical expression is Mn 0.12 Zr 0.94 P 2 o 7 , the preparation method comprises the following steps:

[0039] (1) Firstly, accurately weigh the raw material ZrOCl according to the stoichiometric ratio 2 ·8H 2 O, (NH 4 ) 2 HPO 4 and MnCO 3 ;

[0040] (2) Then weigh H 3 BO 3 and citric acid, H 3 BO 3 The molar ratio of citric acid to luminescent material is 1.2:1, and the molar ratio of citric acid to luminescent material is 3.5:1;

[0041] (3) put ZrOCl 2 ·8H 2 O, (NH 4 ) 2 HPO 4 、H 3 BO 3 Adding water with citric acid is mixed with the mixture solution A that mass percent concentration is 30wt%; In MnCO 3 Add the nitric acid of 3mol / L and make it dissolve completely, then add distilled water and be mixed with the clarification solution B that mass percent concentration is 30wt%;

[0042] (4) Mix solution A and solution B prepared in step (3) evenly, adjust the pH value of the solution to 2 with...

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Abstract

The invention discloses a blue-green long-afterglow luminescent material and a preparation method thereof. The chemical expression of the material is MnxZr1-0.5xP2O7, wherein x is equal to 0.005-0.12, raw materials of the luminescent material include ZrOC12.8H2O, (NH4)2HPO4, MnCO3, H3BO3, citric acid and polyethylene glycol 4000. The luminescent center of the prepared luminescent material is Zr<4+> and Mn<2+>, wherein the blue luminescent part comes from Zr<4+>, and the green luminescent part comes from Mn<2+>. After irradiation for 15 min under lamplight, a light source is removed, and it can be observed in darkness that the material can emit blue-green light continuously for 10 h or longer. Moreover, the material is low in synthesis cost and high in chemical stability.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and in particular relates to a blue-green long-lasting luminescent material and a preparation method thereof. Background technique [0002] Long afterglow materials are photoluminescent materials, which can store the energy of external light radiation, and slowly release the stored energy in the form of visible light under the disturbance of temperature. It has a wide range of uses in many fields such as instrument display, anti-counterfeiting technology, architectural decoration, and arts and crafts coatings. Long-lasting luminescent materials are mainly composed of matrix, activator (luminescent center) and auxiliary activator. Existing patented technologies and literature reports all use rare earth ions or some transition metal ions as luminescent centers, such as Eu 2+ 、Eu 3+ , Tb 3+ 、Nd 3+ , Mn 2+ 、Cu + wait. For example, the invention patent "A Red Long Afterglow Luminescent Mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/70
CPCC09K11/70
Inventor 郑子山林秋惠王华根陈国良
Owner MINNAN NORMAL UNIV
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