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A kind of magnesium erbium ytterbium tridoped sodium niobate and its preparation method and application

A technology of sodium niobate and magnesium erbium ytterbium, which is applied in the field of magnesium erbium ytterbium tridoped sodium niobate and its preparation, can solve the problems of low luminous intensity and achieve the effect of simple preparation process and improved up-conversion luminous intensity

Active Publication Date: 2021-09-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of low up-conversion luminous intensity of up-conversion materials in the prior art, and to provide a preparation method of magnesium-erbium-ytterbium tri-doped sodium niobate

Method used

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  • A kind of magnesium erbium ytterbium tridoped sodium niobate and its preparation method and application
  • A kind of magnesium erbium ytterbium tridoped sodium niobate and its preparation method and application
  • A kind of magnesium erbium ytterbium tridoped sodium niobate and its preparation method and application

Examples

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Embodiment 1

[0033] This embodiment provides a magnesium-erbium-ytterbium-tridoped sodium niobate, which is prepared by the following preparation method.

[0034] 1. Weigh 0.2712mmol of ytterbium nitrate pentahydrate, 0.0904mmol of erbium nitrate pentahydrate and 0.01mol of magnesium chloride hexahydrate and dissolve them in 40ml of deionized water in sequence.

[0035] 2. Weigh 0.15mol sodium hydroxide and dissolve it in the mixed solution in step 1, add 40mL ethylene glycol and mix well.

[0036] 3. Slowly add 0.0049 mol of niobium pentoxide to the mixed solution in step 2, stir evenly, then move to the reaction kettle at 270°C for 24 hours.

[0037] 4. After the reaction, the mixed solution in the reactor was filtered, and the obtained solid powder was dried at 80° C. for 8 hours.

[0038] 5. Finally, the powder sample was calcined at 1050° C. for 2 hours.

[0039] figure 1 It is the XRD figure of the magnesium erbium ytterbium tri-doped sodium niobate prepared in the present embodim...

Embodiment 2

[0042] This embodiment provides a magnesium erbium ytterbium tridoped sodium niobate. Its preparation method is basically consistent with the method in Example 1, and the difference is that the total amount of ytterbium nitrate pentahydrate in step 1 is 0.2719mmol, and the total amount of erbium nitrate pentahydrate is 0.0755mmol; in step 3, the total amount of niobium pentoxide is 0.0049 mol. The performance of the magnesium erbium ytterbium tridoped sodium niobate prepared by this method is similar to that of Example 1.

Embodiment 3

[0044] This embodiment provides a magnesium erbium ytterbium tridoped sodium niobate. Its preparation method is basically consistent with the method in embodiment 1, and difference is: the total amount of ytterbium nitrate pentahydrate in step 1 is 0.154mmol, and the total amount of erbium nitrate pentahydrate is 0.0924mmol; In step 3, the total amount of niobium pentoxide is 0.0051mol.

[0045] The performance of the magnesium erbium ytterbium tridoped sodium niobate prepared by this method is similar to that of Example 1.

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Abstract

The invention relates to a magnesium-erbium-ytterbium-tridoped sodium niobate and a preparation method and application thereof. The preparation method includes the following steps: S1: dissolving erbium source, ytterbium source, niobium source, magnesium source and sodium source in a solvent to form a mixed solution; the solvent is a mixed solvent of water and ethylene glycol; S2: the The mixed solution was reacted at 260~270°C for 24~48h, filtered, and dried to obtain a solid powder; S3: Calcining the solid powder at 900~1050°C for 0.5~2h to obtain magnesium, erbium, ytterbium tridoped sodium niobate. The preparation method provided by the present invention is a solvothermal method, and its preparation process is simple; in the present invention, under 980nm laser excitation, in magnesium erbium ytterbium tridoped sodium niobate, erbium ion (Er 3+ ) is a rare earth luminescence center; erbium ions (Er 3+ ) is a rare earth luminescence center; ytterbium ion (Er 3+ ) is the sensitizing ion; metal magnesium ion (Mg 2+ ) for improving the upconversion luminescence efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical materials, and in particular relates to a magnesium-erbium-ytterbium-tridoped sodium niobate and a preparation method and application thereof. Background technique [0002] Up-conversion luminescent materials can convert near-infrared light into visible light, that is, convert long-wavelength light into short-wavelength light, which is opposite to the Stokes effect. Upconversion luminescent materials are used in lighting, biomedical imaging, display, photocatalysis and sensors, etc., but their development in various fields is hindered because of their low conversion efficiency. Studies have shown that the local environment and symmetry of the crystal field around rare earth ions can be changed by the doping of some ions with smaller radii, and the energy level lifetime of rare earth ions can be adjusted, thereby improving the upconversion fluorescence efficiency, in which the dopant ions act as ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
CPCC09K11/7766C09K11/7769
Inventor 唐巽泽钱艳楠张海燕
Owner GUANGDONG UNIV OF TECH
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