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Method for preparing nano luminescent powder made from yttrium europium vanadate

A technology of yttrium vanadate and fluorescent powder, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of less products, long reaction time, and affecting fluorescence luminous efficiency

Inactive Publication Date: 2005-01-12
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods generally require a relatively long reaction time and relatively complicated procedures, and it is difficult to control the particle size of the final product below 10 nanometers, which will seriously affect the luminous efficiency of its fluorescence
In addition, the amount of the obtained product is small, which is not suitable for mass production

Method used

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  • Method for preparing nano luminescent powder made from yttrium europium vanadate
  • Method for preparing nano luminescent powder made from yttrium europium vanadate
  • Method for preparing nano luminescent powder made from yttrium europium vanadate

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Embodiment Construction

[0016] 1. Add the solids of sodium metavanadate, yttrium nitrate and europium nitrate with a molar ratio of 1:0.95:0.05 into distilled water, mix and stir evenly, adjust the pH value to 4 with dilute nitric acid, and react under 260W microwave radiation for 10 minutes , The product was separated by centrifugation, washed with distilled water, and dried to obtain the product a.

[0017] 2. Add the solids of sodium metavanadate, yttrium nitrate and europium nitrate with a molar ratio of 1:0.95:0.05 into distilled water, mix and stir evenly, adjust the pH value to 6 with dilute nitric acid, and react under 260W microwave radiation for 10 minutes , The product was separated by centrifugation, washed with distilled water, and dried to obtain the product b.

[0018] 3. Add the solids of sodium metavanadate, yttrium nitrate and europium nitrate with a molar ratio of 1:0.95:0.05 into distilled water, mix and stir evenly. At this time, the pH value is 7, and react under 260W microwave ...

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Abstract

A method for preparing fluorescent nanopowder opf yttrium europium vanadate includes mixing sodium metavanadic acid with solids of yttrium nirate and europium nitrate in distilled water, agitating the material in distilled water to be solution; regulating pH value to 4-11, reacting on the solution for 5-10 min, under microwave radiation of 260W-560 W and obtaining the desired product through centrifugal separation, distilled water washing and drying.

Description

technical field [0001] The invention discloses a preparation method of nanometer yttrium europium vanadate fluorescent powder, which belongs to the field of luminescent materials. Background technique [0002] Yttrium vanadate belongs to the crystal structure of tetragonal zircon, and is an excellent matrix material, which can be doped with trivalent transition metal ions and rare earth metal ions. Because of its applications in polarizers, fluorescent and laser materials, and the needs of basic research, it has been receiving extensive attention in the fields of solid-state chemistry and material science. Since yttrium vanadate is a uniaxial birefringent crystal, it can be used as a polarizer; rare earth-doped yttrium vanadate single crystal can be used as an excellent solid-state laser material, and trivalent europium ion-doped yttrium vanadate powder is A highly efficient red light-emitting material, in the case of bulk yttrium europium vanadate, its fluorescence yield c...

Claims

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Application Information

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IPC IPC(8): C09K11/78
Inventor 汪浩徐海燕严辉
Owner BEIJING UNIV OF TECH
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