Preparation method of dysprosium zirconate terbium-doped green luminescent material

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...

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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 Letters, 2005, 59: 2804-2807] and sol-gel method [Y.P.Tong, Z.X.Yu, Rapid preparation and characterization of Dy 2 Zr 2 o 7 nanocrystals, Materials Research Bulletin, 2008, 43: 2736-2741], and the synthesis temperature of the existing synthesis methods is generally high, generally requiring 1000°C or even higher, the synthesis process is relatively complicated, and the hydrothermal method synthesized under relatively mild conditions almost no reports

In addition, there are very few reports on the study of dysprosium zirconate as a matrix of luminescent materials, and the synthesis of dysprosium zirconate doped with terbium green luminescent materials has not been reported yet.

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