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Method for preparing yttrium oxide substrate nano-oxide fluorescent powder

A technology of nano-oxide and fluorescent powder, which is applied in the field of nano-fluorescent materials to achieve the effects of good dispersion, cheap raw materials, and low cost

Inactive Publication Date: 2010-12-29
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using polyamide-amine (PAMAM) dendrimers as templates to prepare nano-dysprosium ions and strontium ions-doped yttrium oxide (Y 2 o 3 : Dy 3+ , Y 2 o 3 : Sr 2+ , Y 2 o 3 : Dy 3+ :Sr 2+ etc.) have not yet been reported

Method used

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  • Method for preparing yttrium oxide substrate nano-oxide fluorescent powder
  • Method for preparing yttrium oxide substrate nano-oxide fluorescent powder
  • Method for preparing yttrium oxide substrate nano-oxide fluorescent powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 0.1915 g of yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O), 0.0009g dysprosium oxide (Dy 2 o 3 ) into a 100ml beaker, add 0.126ml of 36% concentrated hydrochloric acid, heat to dissolve, and then add 10ml of deionized water to make a mixed solution of rare earth ions. At this time, the molar ratio of rare earth ions is Y 3+ : Dy 3+ =1:0.01;

[0028] (2) Weigh 0.3554g G5.0 PAMAM (fifth-generation polyamide-amine dendrimer) and dissolve it in deionized water to obtain a PAMAM aqueous solution. Use 0.01 mol·L -1 dilute hydrochloric acid to adjust the pH value of the aqueous solution to 5.0;

[0029] (3) Weigh 5.325g ammonium oxalate ((NH 4 ) 2 C 2 o 4 ·H 2 O) Dissolve in 250ml deionized water to make a concentration of 0.15 mol L -1 ammonium oxalate solution;

[0030] (4) Slowly add the rare earth ion mixed solution pre-prepared in step (1) into the G5.0 PAMAM aqueous solution under rapid stirring, and fully react for 24 hours;

[0031] (5) Add 10...

Embodiment 2

[0035] (1) Weigh 0.1915 g of yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O), 0.0019g dysprosium oxide (Dy 2 o 3 ) into a 100ml beaker, add 0.126ml of 36% concentrated hydrochloric acid, heat to dissolve, and then add 10ml of deionized water to make a mixed solution of rare earth ions. At this time, the molar ratio of rare earth ions is Y 3+ : Dy 3+ =1:0.02;

[0036](2) Weigh 0.3554g G5.0 PAMAM (fifth-generation polyamide-amine dendrimer) and dissolve it in deionized water to obtain a PAMAM aqueous solution. Use 0.01 mol·L -1 dilute hydrochloric acid to adjust the pH to 5.0;

[0037] (3) Weigh 5.325g ammonium oxalate ((NH 4 ) 2 C 2 o 4 ·H 2 O) Dissolve in 250ml deionized water to make a solubility of 0.15 mol L -1 ammonium oxalate solution;

[0038] (4) Slowly add the rare earth ion mixed solution pre-prepared in step (1) into the PAMAM aqueous solution under rapid stirring, and fully react for 24 hours;

[0039] (5) Add ammonium oxalate solution dropwise to the...

Embodiment 3

[0043] (1) Weigh 0.1915 g of yttrium nitrate hexahydrate (Y(NO 3 ) 3 ·6H 2 O), 0.0028g of dysprosium oxide was placed in a 100ml beaker, 0.126ml of 36% concentrated hydrochloric acid was added to heat and dissolve, and then 10ml of deionized water was added to form a mixed solution of rare earth ions. The molar ratio of rare earth ions was Y 3+ : Dy 3+ =1︰0.03;

[0044] (2) Weigh 0.3554g G5.0 PAMAM (fifth-generation polyamide-amine dendrimer) and dissolve it in deionized water to obtain a PAMAM aqueous solution. Use 0.01 mol·L -1 dilute hydrochloric acid to adjust the pH to 5.0;

[0045] (3) Weigh 5.325g ammonium oxalate ((NH 4 ) 2 C 2 o 4 ·H 2 O) Dissolve in 250ml deionized water to make a solubility of 0.15 mol L -1 ammonium oxalate solution;

[0046] (4) Slowly add the rare earth ion mixed solution pre-prepared in step (1) into the G5.0 PAMAM aqueous solution under rapid stirring, and fully react for 24 hours;

[0047] (5) Add 10 ml of ammonium oxalate solution ...

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Abstract

The invention relates to a method for preparing rare earth ion-doped yttrium oxide nano fluorescent powder by taking polyamidoamine (PAMAM) as a template. The method comprises the following steps of: dissolving dysprosium oxide, yttrium nitrate and strontium nitrate in concentrated hydrochloric acid, heating and dissolving the mixture and adding deionized water into the dissolved product to obtain mixed solution of rare earth ions; dissolving the PAMAM in the deionized water to obtain aqueous solution of the PAMAM; dissolving ammonium oxalate in the deionized water to obtain solution of the ammonium oxalate; slowly adding the mixed solution of the rare earth ions into the aqueous solution of the PAMAM dropwise for reaction; adding the solution of the ammonium oxalate dropwise; centrifuging a precipitate and alternatively washing the precipitate with the deionized water and absolute ethyl alcohol to obtain gel; and putting the gel into a drying oven for drying and baking to obtain nano-scale dysprosium and strontium-codoped yttrium oxide (Y2O3:Dy3<+>:Sr2<+>) fluorescent powder. The method has the advantages of nano-scale particle size of a material, high dispersivity, capability of enhancing the fluorescence emission intensity of dysprosium ions, adjusting the (yellow / blue) Y / B value of characteristic fluorescence of the dysprosium ions and presenting approximate white-light emission by using the strontium ions, low baking temperature, simple preparation process, low raw material price and low cost.

Description

technical field [0001] The invention belongs to the technical field of nano fluorescent materials, in particular to a preparation method of rare earth ion-doped yttrium oxide nano fluorescent powder using PAMAM as a template. Background technique [0002] Rare earth fluorescent materials have the characteristics of narrow emission spectral band, high color purity, strong light absorption ability, and high conversion efficiency, and are widely used in lighting sources, information display and transmission, and solar photoelectric conversion. After the size of the rare earth fluorescent material is nanosized, it is expected to further improve the luminescence performance of the rare earth fluorescent material. [0003] Fluorescent materials activated by rare earth elements have good luminous properties, high efficiency, and low cost, and have good application prospects. Y 2 o 3 It is a good fluorescent matrix material, which has the characteristics of low phonon energy, goo...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 林深陈祖亮张晓凤杨柳艺
Owner FUJIAN NORMAL UNIV
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