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Preparation method of europium oxide luminescent material

A technology of luminescent materials and europium oxide, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of harsh reaction conditions and cumbersome operation process, and achieve the effects of easy control of conditions, high reaction efficiency and convenient operation

Inactive Publication Date: 2011-02-09
苏振彪
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the operation process of the existing method for preparing luminescent materials is relatively cumbersome and the reaction conditions are relatively harsh, and to provide a method for preparing luminescent materials by rare earth doping with simple operation process and mild preparation conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 1.00 g of thorium nitrate tetrahydrate and 0.02 g of europium oxide in a beaker. Add 10ml of distilled water, add dropwise 0.03g of nitric acid, and stir to obtain a clear solution. In order to avoid sputtering during calcination in a muffle furnace, the water in the solution can be evaporated to dryness in an oven. Calcined at 500°C for 2h in a muffle furnace to obtain the final target product.

[0016] The final product was tested in a F4500 fluorometer, and 250nm was selected as the excitation wavelength to measure the Xingguang emission spectrum.

Embodiment 2

[0018] Weigh 1.00 g of thorium nitrate tetrahydrate and 0.08 g of europium oxide in a beaker. Add 200ml of distilled water, dropwise add 0.12g of nitric acid, and stir to obtain a clear solution. In order to avoid sputtering during calcination in a muffle furnace, the water in the solution can be evaporated to dryness in an oven. Calcined at 450°C for 3h in a muffle furnace.

Embodiment 3

[0020] Weigh 1.00g of thorium nitrate tetrahydrate and 0.05g of sodium oxide in a porcelain crucible. Add 300ml of distilled water, dropwise add 0.08g of nitric acid, and stir to obtain a clear solution. In order to avoid sputtering during calcination in a muffle furnace, the water in the solution can be evaporated to dryness in an oven. Calcined at 550°C for 3h in a muffle furnace.

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Abstract

The invention discloses a preparation method of europium oxide luminescent material, which relates to the preparation method of a rare earth luminescent material. In the preparation method, the mass ratio of thorium nitrate tetrahydrate to europium oxide powder is 1:0.01-0.02; the thorium nitrate tetrahydrate and the europium oxide powder are uniformly mixed together, and then the mixture is calcined in a container for 1 to 12 hours at the temperature of between 400 and 1,000 DEG C; and the mixture is cooled to obtain a target product. The preparation method has strong operability, the reaction process is convenient to operate, the condition is easy to control, and the reaction efficiency is high, so the preparation method is convenient for industrial production.

Description

technical field [0001] The invention relates to a preparation method of a rare earth luminescent material. Background technique [0002] Luminescence is the process by which energy is somehow absorbed inside an object and converted into light radiation. At present, all luminescent materials include organic and inorganic, mainly organic compounds, mainly solid materials, and most of them are powder polycrystalline, followed by single crystal and thin film. Among the solid materials, most of them are insulators or semiconductors with large band gaps. The luminescent properties of inorganic materials are related to the structural defects and impurity defects of the compounds. The luminescence caused by the former is called non-activated luminescence (natural luminescence); the latter is called excitation luminescence. The activator occupies some lattice positions in the luminescent material in the form of impurities, and the luminescent material that emits impurities as an ac...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 苏振彪
Owner 苏振彪
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