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Method for preparing Yb and Tm doped sodium yttrium tetrafluorohydrazine

A technology of sodium tetrafluoroyttrium, 20min, applied in the new field of preparation of sodium tetrafluoroyttrium, can solve the problems of poor fluorescence intensity of tetrafluoroyttrium sodium, easy agglomeration of products, complicated preparation of coprecipitation method, etc., and achieve easy popularization and use, fluorescence High strength, good water solubility

Inactive Publication Date: 2019-04-26
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the high-temperature pyrolysis method is strict to the experimental conditions (requiring an oxygen-free and anhydrous environment) and harsh (long reaction time and high temperature), toxic by-products appear, and the product is hydrophobic; The fluorescence intensity of sodium yttrium fluoride is poor, the preparation process requires high temperature treatment, and the dispersion is poor; the preparation of coprecipitation method is complicated, high temperature treatment is required, and the product is easy to agglomerate

Method used

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  • Method for preparing Yb and Tm doped sodium yttrium tetrafluorohydrazine
  • Method for preparing Yb and Tm doped sodium yttrium tetrafluorohydrazine
  • Method for preparing Yb and Tm doped sodium yttrium tetrafluorohydrazine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation steps in this example are as follows:

[0026] 1) Dissolve 30ml of N-methylpyrrolidone solution in 20ml of deionized water, stir and mix for 10min and set aside;

[0027] 2) Take 1.1mmol RCl 3 ·6H 2 O was dissolved in 5ml deionized water, in which YCl 3 ·6H 2 O is 0.2307g, YbCl 3 ·6H 2 O is 0.1263g, TmCl 3 ·6H 2 O is 0.0021g (the molar ratio of Y, Yb and Tm is 70:30:0.5, add this solution into the liquid obtained in 1), stir and mix for 30min and set aside;

[0028] 3) Weigh 554mg of NaF and dissolve it in 5ml of deionized water, then add to the mixture in 2) and stir for 30min;

[0029] 4) Pour the mixed liquid obtained in 3) into a reaction kettle, and put it into a temperature environment of 140° C. for heat treatment for 12 hours;

[0030] 5) After the temperature of the reactor was lowered to room temperature, the obtained sample was washed by centrifugation, deionized water and absolute ethanol three times. It was further dried in an oven...

Embodiment 2

[0032] The preparation steps in this example are as follows:

[0033] 1) Dissolve 30ml of N-methylpyrrolidone solution in 20ml of deionized water, stir and mix for 10min and set aside;

[0034] 2) Take 1.1mmol RCl 3 ·6H 2 O was dissolved in 5ml deionized water, in which YCl 3 ·6H 2 O is 0.2307g, YbCl 3 ·6H 2 O is 0.1263g, TmCl 3 ·6H 2 O is 0.0021g (the molar ratio of Y, Yb and Tm is 70:30:0.5, add this solution into the liquid obtained in 1), mix and set aside;

[0035] 3) Weigh 554mg of NaF and dissolve it in 5ml of deionized water, then add to the mixture in 2) and stir for 30min;

[0036] 4) Pour the mixed liquid obtained in 3) into a reaction kettle, and put it into a temperature environment of 160° C. for heat treatment for 12 hours;

[0037] 5) After the temperature of the reaction kettle dropped to room temperature, the reaction kettle was taken out, collected by centrifugation, washed with deionized water and absolute ethanol for 3 times, and then dried in a 6...

Embodiment 3

[0039] The preparation steps in this example are as follows:

[0040] 1) Dissolve 30ml of N-methylpyrrolidone solution in 20ml of deionized water, stir and mix for 10min and set aside;

[0041] 2) Take 1.1mmol RCl 3 ·6H 2 O was dissolved in 5ml deionized water, in which YCl 3 ·6H 2 O is 0.2307g, YbCl 3 ·6H 2 O is 0.1263g, TmCl 3 ·6H 2 O is 0.0021g (the molar ratio of Y, Yb and Tm is 70:30:0.5, add this solution into the liquid obtained in 1), stir and mix for 30min and set aside;

[0042] 3) Weigh 554mg of NaF and dissolve it in 5ml of deionized water, then add to the mixture in 2) and stir for 30min;

[0043] 4) Pour the mixed liquid obtained in 3) into a reaction kettle, and put it into a temperature environment of 180° C. for heat treatment for 12 hours;

[0044] 5) After the temperature of the reaction kettle dropped to room temperature, the reaction kettle was taken out, collected by centrifugation, washed with deionized water and absolute ethanol for 3 times, an...

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Abstract

The invention relates to a method for preparing Yb and Tm doped sodium yttrium tetrafluorohydrazine and belongs to the technical field of fluorescent nano material preparation. A hydrothermal method is adopted for preparation. The method is basically characterized by comprising the following steps: taking deionized water and N-methyl pyrrolidone as solvents, and ytterbium chloride hexahydrate, thulium chloride hexahydrate and yttrium chloride hexahydrate as raw materials, mixing and stirring, adding sodium fluoride, putting the mixed liquid into a reaction kettle, carrying out thermal treatment for 12 hours at 140-180 DEG C, naturally cooling to the room temperature, centrifuging, collecting a sample, and washing with deionized water and absolute ethyl alcohol three times to obtain a hexagonal and cubic mixed phase or pure hexagonal phase-phase sodium yttrium tetrafluorohydrazine upconversion fluorescence material. Under excitation of laser of 980nm, the material has a very good fluorescence property, and has a main emission peak at 362nm, 451nm and 475nm. The method is simple to operate and good in energy conservation, greenness and environment protection, and the prepared productis high in fluorescence strength, wide in application range and easy to popularize and produce.

Description

technical field [0001] The invention belongs to the field of preparation of fluorescent nanometer materials, and relates to a new preparation method of tetrafluoroyttrium sodium doped with Yb and Tm. Background technique [0002] Up-conversion fluorescent materials are a kind of luminescent materials with anti-Stokes luminescence mechanism, which can absorb two or more long-wavelength, low-energy photons and convert them into short-wavelength, high-energy photons. At present, up-conversion luminescent materials are widely used in many fields such as solar cells, solid-state lasers, bioluminescent labels and transparent anti-counterfeiting labels. The matrix materials are mainly oxides, sulfides, halides, sulfur oxides and oxyhalides. Among them, NaYF 4 It is the most ideal up-conversion luminescent host material. Under different conditions, the prepared NaYF 4 Has two crystal structures. Therefore, in material preparation, NaYF 4 The choice of phase composition is of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85
CPCC09K11/7773Y02P20/10
Inventor 冯朋朋施佳利陈青陈彦达田萧茹韩蓉汪奇鹏
Owner ANHUI UNIV OF SCI & TECH
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