Preparation method of dysprosium zirconate terbium-doped green luminescent material

A luminescent material, dysprosium zirconate technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of high synthesis temperature, less research, single preparation method, etc., and achieves good crystallinity, mild reaction conditions, and simple preparation process. Effect

Inactive Publication Date: 2010-03-17
ZHEJIANG SCI-TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, it has been paid attention to as a matrix of photoluminescent materials, but there are few related studies.
[0003] The existing research reports on rare earth dysprosium zirconate materials mainly focus on thermal barrier coatings and photocatalysis, and its preparation method is relatively simple, mainly coprecipitation-calcination method [Zhou Hongming, Yi Danqing, Dy 2 Zr 2 o 7 Preparation and thermophysical properties of ceramic powder, Journal of Aeronautical Materials, 2008, 28(1): 65-69], high-temperature solid-state sintering method [Q.Xu, W.Pan, Preparation and thermophysical properties of Dy 2 Zr 2 o 7 ceramic for thermal barrier coatings, Materials

Method used

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  • Preparation method of dysprosium zirconate terbium-doped green luminescent material
  • Preparation method of dysprosium zirconate terbium-doped green luminescent material

Examples

Experimental program
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Embodiment 1

[0016] Get 1.3695 grams of dysprosium nitrate (Dy(NO 3 ) 3 ·6H 2 O), 0.0566 grams of terbium nitrate (Tb(NO 3 ) 3 ·6H 2 O) be dissolved in 40 milliliters of deionized water, the molar concentrations of dysprosium nitrate and terbium nitrate are respectively 0.0750 mol / liter and 0.0031 mol / liter, and stir for 15 minutes; get zirconium oxychloride (ZrOCl 2 ·8H 2 O) 1.0069 grams were dissolved in 40 milliliters of deionized water, the molar concentration of zirconium oxychloride was 0.0781 mol / liter, and stirred for 15 minutes. The zirconium oxychloride solution was dropped dropwise into the above mixed solution of dysprosium nitrate and terbium nitrate, and stirred for 15 minutes. 1 mol / L sodium hydroxide solution was added dropwise to the above mixed solution to adjust the pH value of the solution to 8.0, and the stirring was continued for 0.5 hour. Put the above prepared solution into a polytetrafluoroethylene-lined autoclave with a filling degree of 80% and a liner vol...

Embodiment 2

[0018] Get 2.2825 grams of dysprosium nitrate (Dy(NO 3 ) 3 ·6H 2 O), 0.1192 grams of terbium nitrate (Tb(NO 3 ) 3 ·6H 2 O) be dissolved in 40 milliliters of deionized water, the molar concentrations of dysprosium nitrate and terbium nitrate are respectively 0.125 mol / liter and 0.0066 mol / liter, and stir for 20 minutes; take zirconium oxychloride (ZrOCl 2 ·8H 2 O) 1.6959 grams were dissolved in 40 milliliters of deionized water, the molar concentration of zirconium oxychloride was 0.1316 mol / liter, and stirred for 15 minutes. The zirconium oxychloride solution was dropped dropwise into the above mixed solution of dysprosium nitrate and terbium nitrate, and stirred for 20 minutes. 1 mol / L sodium hydroxide solution was added dropwise to the above mixed solution to adjust the pH value of the solution to 8.5, and the stirring was continued for 0.5 hour. Put the above prepared solution into a polytetrafluoroethylene-lined autoclave with a filling degree of 80% and a liner vol...

Embodiment 3

[0020] Get 4.565 grams of dysprosium nitrate (Dy(NO 3 ) 3 ·6H 2 O), 0.2891 grams of terbium nitrate (Tb(NO 3 ) 3 ·6H 2 O) be dissolved in 40 milliliters of deionized water, the molar concentrations of dysprosium nitrate and terbium nitrate are respectively 0.25 mol / liter and 0.016 mol / liter, and stir for 20 minutes; take zirconium oxychloride (ZrOCl 2 ·8H 2 O) 3.4279 grams were dissolved in 40 milliliters of deionized water, the molar concentration of zirconium oxychloride was 0.266 mol / liter, and stirred for 15 minutes. The zirconium oxychloride solution was dropped dropwise into the above mixed solution of dysprosium nitrate and terbium nitrate, and stirred for 20 minutes. 1 mol / L sodium hydroxide solution was added dropwise to the above mixed solution to adjust the pH value of the solution to 9.0, and the stirring was continued for 0.5 hour. Put the above prepared solution into a polytetrafluoroethylene-lined autoclave with a filling degree of 80% and a liner volume ...

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Abstract

The invention discloses a preparation method of a dysprosium zirconate terbium-doped green luminescent material. The preparation method comprises the following steps: dissolving dysprosium nitrate andterbium nitrate into deionized water according to mol ratio; dissolving zirconium oxychloride into deionized water, stirring, controlling the mol weight of the zirconium oxychloride to be equal to that of total rare earth kations, dipping the zirconium oxychloride drop by drop into the solution, and stirring; adding sodium hydroxide solution drop by drop to obtain white precipitate, and controlling the pH value of the solution to be 8 to 10; putting the solution into a high-pressure kettle with the filling degree of 80 percent, and treating for 5 to 20 hours at the temperature from 180 DEG Cto 220 DEG C; and finally centrifuging and drying the well-treated solution to obtain the dysprosium zirconate terbium-doped green luminescent material. The invention adopts a hydrothermal method to realize the synthesis of the dysprosium zirconate terbium-doped green luminescent material, and has good product crystallinity, simple process and mild conditions.

Description

technical field [0001] The invention relates to a preparation method of dysprosium zirconate doped terbium green luminescent material. Background technique [0002] Rare earth zirconates (Re 2 Zr 2 o 7 ) has many functions and a wide range of uses. For example, it is used as a thermal barrier coating. Due to its low thermal conductivity and high chemical stability, it has attracted much attention. In addition, as a photocatalyst, it has high catalytic activity and is also used Research extensively. The properties of rare earth zirconates are mainly manifested in: high melting point, high ion conductivity, high chemical stability, high catalytic activity, etc. In recent years, it has been paid attention to as a matrix of photoluminescent materials, but there are few related studies. [0003] The existing research reports on rare earth dysprosium zirconate materials mainly focus on thermal barrier coatings and photocatalysis, and its preparation method is relatively simpl...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 高林辉祝洪良安越王耐艳陈建军金达莱王龙成杜平凡
Owner ZHEJIANG SCI-TECH UNIV
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