Method for preparing rare earth doped NaBiF4 nanoparticles by ultrasonic solution method and application thereof

A rare earth doping, nanoparticle technology, applied in chemical instruments and methods, inorganic chemistry, luminescent materials, etc., to achieve the effect of shortening the time of synthesis process, solving cost, and rapid synthesis process

Pending Publication Date: 2021-02-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the characteristics of industrial batch production, mass production of NaBiF 4 Nano-based materials will inevitably use ethylene glycol in large quantities, resulting in double pressure on resources and the environment

Method used

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  • Method for preparing rare earth doped NaBiF4 nanoparticles by ultrasonic solution method and application thereof
  • Method for preparing rare earth doped NaBiF4 nanoparticles by ultrasonic solution method and application thereof
  • Method for preparing rare earth doped NaBiF4 nanoparticles by ultrasonic solution method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Dissolve bismuth nitrate and sodium nitrate in ethanol at a molar ratio of 1:2 to form a transparent solution; prepare an ethanol solution of ammonium fluoride, and the amount of ammonium fluoride is 6 times that of bismuth nitrate. At a room temperature of 4 degrees Celsius, the ethanol solution of ammonium fluoride was quickly mixed with the solutions of bismuth nitrate and sodium nitrate. Under the ultrasonic power of 200W, the color of the mixed solution instantly changed to milky white; after a reaction time of 60s, milky white was obtained. mixed solution. Use a centrifuge for solid-liquid separation at a centrifugation rate of 8000 rpm to obtain a white powder; dry the white powder at a temperature of 60 degrees Celsius to obtain pure NaBiF 4 Nano powder.

[0072] Such as figure 1 As shown, the obtained powder was scanned between 10 and 80 degrees by X-ray diffractometer, and all the diffraction peaks and NaBiF 4 The standard card (PDF: 00-041-0796) is complet...

Embodiment 2

[0074] Dissolve bismuth acetate and sodium nitrate in ethanol at a molar ratio of 1:4 to form a transparent solution; prepare an ethanol solution of ammonium fluoride, and the amount of ammonium fluoride is 16 times that of bismuth nitrate. At a room temperature of 30 degrees Celsius, the ethanol solution of ammonium fluoride was quickly mixed with the solutions of bismuth nitrate and sodium nitrate. Under the ultrasonic power of 400W, the color of the mixed solution instantly changed to milky white; after a reaction time of 30s, milky white was obtained. mixed solution. Solid-liquid separation is carried out by static precipitation, and the white powder can be obtained by pouring off the ethanol solution in the upper layer; the white powder can be dried at a temperature of 70 degrees Celsius to obtain pure NaBiF 4 Nano powder.

[0075] figure 2 Given the obtained powder using X-ray diffraction pattern, all diffraction peaks and NaBiF 4 The standard card (PDF: 00-041-0796)...

Embodiment 3

[0077] Dissolve bismuth nitrate and sodium nitrate in isopropanol at a molar ratio of 1:6 to form a transparent solution; add rare earth nitrate solution, wherein the amount of samarium nitrate is 0.1% of bismuth nitrate; prepare ammonium fluoride In isopropanol solution, the amount of ammonium fluoride is 20 times that of bismuth nitrate. At a room temperature of 40 degrees Celsius, the isopropanol solution of ammonium fluoride was quickly mixed with the solutions of bismuth nitrate and sodium nitrate. Under the ultrasonic power of 100W, the color of the mixed solution instantly changed to milky white; after a reaction time of 300s, obtained A milky white mixed solution was formed. Use a centrifuge for solid-liquid separation at a centrifugation rate of 12,000 rpm to obtain a white powder; dry the white powder at a temperature of 50 degrees Celsius to obtain Sm-doped NaBiF 4 Nano powder.

[0078] image 3 Given the obtained powder using X-ray diffraction pattern, all diffr...

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Abstract

The invention discloses a method for preparing rare earth doped NaBiF4 nanoparticles by an ultrasonic solution method and application thereof. The method comprises the following steps: dissolving a bismuth source and a sodium source in a solvent to prepare a solution A; adding nitrate containing rare earth into the solution A, and then dispersing inorganic salt of fluoride into a solvent to prepare a solution B; and mixing the solution B and the solution A to prepare a mixed solution, mixing the solution B and the solution A to form a milk white mixed solution under the action of ultrasonic phonation, and completing the growth of the nanocrystals through rapid nucleation and subsequent kinetic competition process of the nanocrystals; then carrying out solid-liquid separation to obtain white powder C, and drying the powder C to obtain NaBiF4-based nano powder with a hexagonal phase structure. The method is simple and feasible in process and good in repeatability, the whole reaction system does not pollute the environment, and the provided process route not only has good application prospects and economic benefits, but also has important practical value.

Description

technical field [0001] The invention belongs to sodium bismuth fluoride (NaBiF) doped with inorganic rare earth 4 )-based nanoparticle powder preparation technology field, in particular to a kind of ultrasonic solution method for preparing rare earth doped NaBiF 4 Nanoparticle methods and their applications. Background technique [0002] Nanomaterials with upconversion function are the functional materials that have attracted much attention in the past decade. It converts lower-energy photons (such as near-infrared) into higher-energy photons (such as visible light). [0003] The matrix material of the conversion material is the main component of the up conversion material. The requirement for it is to have a lower phonon energy. Typical matrix material is NaREF 4 (RE=Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu). Over the past two decades, NaREF 4 Based compounds have been extensively researched and explored, and doping with other rare earths can rea...

Claims

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Application Information

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IPC IPC(8): C01G29/00C09K11/67
CPCC01G29/006C09K11/7705C09K11/7773C09K11/7791C09K11/772C01P2002/72C01P2004/04C01P2006/60
Inventor 葛万银李婧徐美美
Owner SHAANXI UNIV OF SCI & TECH
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