Cerium-europium-terbium codoped nanocrystal fluorescent powder and preparation method thereof

A co-doping, nanocrystalline technology, applied in nano-optics, nanotechnology, nanotechnology and other directions, can solve the problems of affecting the luminescence properties of europium-containing red powder, long preparation time, high corrosion, etc., to overcome the long preparation time and heat. Good stability and low corrosive effect

Active Publication Date: 2017-01-25
四川省有色冶金研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a cerium-europium-terbium co-doped nanocrystalline phosphor and a preparation method thereof, which can effectively solve the problems of long preparation time, high energy consumption, high corrosiveness and the influence of the presence of cerium on the content of Luminescent Properties of Europium Red Powder

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  • Cerium-europium-terbium codoped nanocrystal fluorescent powder and preparation method thereof
  • Cerium-europium-terbium codoped nanocrystal fluorescent powder and preparation method thereof
  • Cerium-europium-terbium codoped nanocrystal fluorescent powder and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A kind of cerium europium terbium co-doped nanocrystalline fluorescent powder, its chemical formula is Ce 0.2 Eu 0.8 f 3 .

[0036] The preparation method of the above-mentioned cerium, europium and terbium co-doped nanocrystalline phosphor comprises the following steps:

[0037] (1) Press Ce 3+ and Eu 3+ The molar ratio is 0.2:0.8, and the rare earth raw material Ce(NO 3 ) 3 ·6H 2 O and Eu(NO 3 ) 3 ·6H 2 O, mix, add ionic liquid [Bmim]NO 3 , and stirred at 60°C for 30min to obtain a mixed solution; in which each rare earth raw material and ionic liquid [Bmim]NO 3 The molar ratio is 1:3;

[0038] (2) Inject the mixed solution obtained in step (1) into the ionic liquid [Bmim]PF with a micro-injector 6 , ultrasonically dispersed at 100°C and 20Hz for 1 h; the injection flow rate of the mixture was 4 μL / s; the ionic liquid [Bmim]PF 6 The molar ratio with each rare earth raw material is 1:1;

[0039] (3) Cool the ultrasonic dispersion obtained in step (2) to ...

Embodiment 2

[0042] A kind of cerium europium terbium co-doped nanocrystalline fluorescent powder, its chemical formula is Ce 0.3 Eu 0.5 Tb 0.2 f 3 .

[0043] The preparation method of the above-mentioned cerium, europium and terbium co-doped nanocrystalline phosphor comprises the following steps:

[0044] (1) Press Ce 3+ 、Eu 3+ and Tb 3+ The molar ratio is 0.3:0.5:0.2, and the rare earth raw material Ce(NO 3 ) 3 ·6H 2 O, Eu(NO 3 ) 3 ·6H 2 O and Tb(NO 3 ) 3 ·6H 2 O, mix, add ionic liquid [Bmim]NO 3 , and stirred at 60°C for 30min to obtain a mixed solution; in which each rare earth raw material and ionic liquid [Bmim]NO 3 The molar ratio is 1:3;

[0045] (2) Inject the mixed solution obtained in step (1) into the ionic liquid [Bmim]PF with a micro-injector 6 , ultrasonically dispersed at 100°C and 20Hz for 1 h; the injection flow rate of the mixture was 4 μL / s; the ionic liquid [Bmim]PF 6 The molar ratio with each rare earth raw material is 1:1.

[0046] (3) Cool the ul...

Embodiment 3

[0049] A kind of cerium europium terbium co-doped nanocrystalline fluorescent powder, its chemical formula is Ce 0.3 Eu 0.2 Tb 0.5 f 3 .

[0050] The preparation method of the above-mentioned cerium, europium and terbium co-doped nanocrystalline phosphor comprises the following steps:

[0051] (1) Press Ce 3+ 、Eu 3+ and Tb 3+ The molar ratio is 0.3:0.2:0.5, and the rare earth raw material Ce(NO 3 ) 3 ·6H 2 O, Eu(NO 3 ) 3 ·6H 2 O and Tb(NO 3 ) 3 ·6H 2 O, mix, add ionic liquid [Bmim]NO 3 , and stirred at 60°C for 30min to obtain a mixed solution; in which each rare earth raw material and ionic liquid [Bmim]NO 3 The molar ratio is 1:3;

[0052] (2) Inject the mixed solution obtained in step (1) into the ionic liquid [Bmim]PF with a micro-injector 6 , ultrasonically dispersed at 100°C and 20Hz for 1 h; the injection flow rate of the mixture was 4 μL / s; the ionic liquid [Bmim]PF 6 The molar ratio with each rare earth raw material is 1:1;

[0053] (3) Cool the ul...

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Abstract

The invention discloses cerium-europium-terbium codoped nanocrystal fluorescent powder which has a chemical general formula of CexEunTb1-x-nF3 (x+n is greater than 0 and less than or equal to 1), wherein x represents a molar concentration of Ce3+, and n represents a molar concentration of Eu3+. A preparation method of the powder comprises the following steps: (1) weighing Ce(NO3)3.6H2O, Eu(NO3)3.6H2O and Tb(NO3)3.6H2O, adding [Bmim]NO3, stirring for 30-45min at 55-65 DEG C to prepare mixed liquid, (2) adding the mixed liquid into [Bmim]PF6, performing ultrasonic dispersion for 1-3h at 10-30Hz, and (3) cooling ultrasonic dispersion liquid to the room temperature, sucking liquid on a lower layer after liquid layering, washing with acetone, and then performing centrifugation and drying. The preparation method is simple, low in energy consumption and low in corrosion, and the prepared nanocrystal fluorescent powder has a good luminescent property.

Description

technical field [0001] The invention relates to the technical field of rare earth luminescent materials, in particular to a cerium, europium and terbium co-doped nanocrystalline fluorescent powder and a preparation method thereof. Background technique [0002] At present, a variety of methods for the synthesis of rare earth-doped nanoparticles have been developed, including high-temperature solid-phase method, hydrothermal / hot-melt method, sol-gel method, microwave method, ultrasonic method, etc. The synthesis of rare earth luminescent materials by solid-state reaction method is the earliest and most widely used traditional method, and it is also the only method to achieve industrial production. The main process is to weigh the raw materials that meet the purity requirements according to a certain proportion, and add a certain amount of flux Mix well and grind evenly, and then burn under certain temperature and atmosphere time conditions. Although the high-temperature solid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85B82Y20/00B82Y30/00B82Y40/00
CPCB82Y20/00B82Y30/00B82Y40/00C09K11/7772C09K11/779
Inventor 赵映付刚刘倩琛贾元波伍建军李波万宁
Owner 四川省有色冶金研究院有限公司
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