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Eu doped YPO4 microballoon and preparation method thereof

A microsphere, eu2o3 technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of poor crystallinity, poor crystal grain dispersion, and complex process in chemical precipitation method, and achieve controllable structure, easy control, and process. simple effect

Inactive Publication Date: 2013-06-05
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods still have some deficiencies in terms of material composition, structure and performance control, such as poor crystallinity of chemical precipitation method, complex sol-gel method process, and obtained Eu 3+ doped YPO 4 Most of the nanopowders are irregular particles, and the grain dispersion is not good and easy to agglomerate
At present, there is no YPO with good crystallization and good dispersion 4 :Related reports on Eu microspheres

Method used

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  • Eu doped YPO4 microballoon and preparation method thereof
  • Eu doped YPO4 microballoon and preparation method thereof
  • Eu doped YPO4 microballoon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Take 0.5 ml of 1 mol L -1 YCl 3 solution, and then add EuCl 3 The solution is fully mixed (Eu10%, mass ratio);

[0025] (2) Under stirring conditions, add 1 mmol potassium sodium tartrate and 1 mmol trisodium phosphate in turn, and stir for 10 min to dissolve completely to ensure that the reactants are evenly mixed;

[0026] (3) Use 1mol under stirring condition . L -1 Adjust the pH value of the mixed solution to pH=2 with dilute hydrochloric acid;

[0027] (4) Transfer the above mixed solution to a stainless steel reaction kettle with polytetrafluoroethylene lining, seal it, react at 180 °C for 24 h, and cool it to room temperature naturally;

[0028] (5) The obtained precipitate was centrifuged (4000 r / min) for 5 min, and the precipitate was repeatedly washed with water and ethanol, and then centrifuged. Put it in a drying oven at 60°C and dry it to get YPO 4 : Eu microspheres.

[0029]

Embodiment 2

[0031] (1) Take 0.5 ml of 1 mol L -1 YCl 3 solution, and then add EuCl 3 The solution is fully mixed (Eu 6%, mass ratio);

[0032] (2) Under stirring conditions, add 2 mmol potassium sodium tartrate and 2 mmol trisodium phosphate in turn, and stir for 10 min to dissolve completely to ensure that the reactants are mixed evenly;

[0033] (3) Use 1 mol under stirring condition . L -1 Adjust the pH of the mixed solution to 3 with dilute hydrochloric acid;

[0034] (4) Transfer the above mixed solution to a stainless steel reaction kettle with polytetrafluoroethylene lining, seal it, react at 200 °C for 24 h, and naturally cool to room temperature;

[0035] (5) The obtained precipitate was centrifuged (4000 r / min) for 5 min, and the precipitate was repeatedly washed with water and ethanol, and then centrifuged. Put it in a drying oven at 60°C and dry it to get YPO 4 : Eu microspheres.

[0036]

Embodiment 3

[0038] (1) Take 2 ml of 1 mol L -1 YCl 3 solution, and then add EuCl 3 The solution is fully mixed (Eu 3%, mass ratio);

[0039] (2) Under stirring conditions, add 2 mmol potassium sodium tartrate and 2 mmol trisodium phosphate in turn, and stir for 10 min to dissolve completely to ensure that the reactants are mixed evenly;

[0040] (3) Use 1 mol under stirring condition . L -1 The pH of the mixed solution adjusted by dilute hydrochloric acid=2;

[0041](4) Transfer the above mixed solution to a stainless steel reaction kettle with polytetrafluoroethylene lining, seal it, react at 160 °C for 12 h, and naturally cool to room temperature;

[0042] (5) The obtained precipitate was centrifuged (4000 r / min) for 5 min, and the precipitate was repeatedly washed with water and ethanol, and then centrifuged. Put it in a drying oven at 60°C and dry it to get YPO 4 : Eu microspheres.

[0043] figure 1 For utilizing the YPO prepared by the method described in the embodiment of t...

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Abstract

The invention provides an Eu doped YPO4 microballoon and a preparation method thereof. The method adopts a hydrothermal method. The Eu doped YPO4 microballoon is synthetized with one step through the reaction of YC13 and EuC13 as well as trisodium phosphate under the coordination of tartaric acid base. The preparation method comprises the following steps of mixing a certain amount of YC13 solution and EuC13 solution firstly, then sequentially adding solid sodium potassium tartrate tetrahydrate and the trisodium phosphate, stirring to dissolve completely, then regulating the pH value of the mixed solution to 2 with diluted hydrochloric acid, then transferring the mixed solution to a stainless steel reaction kettle with a polytetrafluoroethylene lining, sealing, reacting for 6-24 hours at 160-200 DEG C, then cooling naturally to room temperature, washing and drying so as to obtain the product. The composition of the product is regulated by regulating the mass ratio of the EuC13 and the YC13 as well as the mole ratio of the sodium potassium tartrate tetrahydrate and the trisodium phosphate. The Eu doped YPO4 microballoon is simple in technology, low in cost and high in yield, and is applicable to industrialized production, and the size, the composite and the appearance of the product are easy to control.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, and relates to a YPO 4 The preparation method of microspheres, specifically, involves a Eu-doped YPO 4 Preparation method of microsphere fluorescent material. Background technique [0002] Ion-doped rare-earth phosphate nanomaterials, as important inorganic luminescent materials, have always been an important part of phosphors. And Eu 3+ activated LnPO 4 It has potential application on flat panel display, therefore, it is of great significance to develop and study rare earth phosphate nano-luminescent materials. At present, studies have found that ion doping, surface composition and structure, crystal shape and structure all have an impact on the optical properties of rare earth phosphate nanomaterials. With the continuous development and improvement of nanomaterial preparation technology. Many nano-luminescent materials with different sizes, structures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/81
Inventor 王德宝宋彩霞张阳
Owner QINGDAO UNIV OF SCI & TECH
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