Fluoride photo-thermal difunctional nano material and preparation method thereof

A nanomaterial, dual-function technology, applied in the nanometer metal fluoride preparation technology and photothermal field, to achieve excellent photoluminescence properties, excellent photothermal properties, and excellent luminescence effects

Active Publication Date: 2022-03-01
湖南工商大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there have been no reports of new materials of the rare earth lithium fluoride series with both photoluminescence and photothermal properties.

Method used

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  • Fluoride photo-thermal difunctional nano material and preparation method thereof
  • Fluoride photo-thermal difunctional nano material and preparation method thereof
  • Fluoride photo-thermal difunctional nano material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] S1: Add oleic acid, octadecene and octadecylamine into a three-necked flask at a volume ratio of 50:45:5, with a total volume of 20ml; then add 0.5% of the total mass of sodium oleate, and heat and stir to form a uniform solvent;

[0042] S2: Add 1 mmol lithium chloride, 0.7 mmol lanthanum chloride, 0.17 mmol ytterbium chloride, 0.03 mmol erbium chloride, 0.1 mmol aluminum chloride and 6 mmol ammonium fluoride into S1 to obtain In a solvent, the concentration of the aqueous solution of lithium chloride, lanthanum chloride, ytterbium chloride, erbium chloride, aluminum chloride and ammonium fluoride is 1mol / L;

[0043] S3: heat the solution obtained in S2 at 160°C for 40 minutes, evaporate and remove water, and obtain an emulsion;

[0044] S4: Vacuumize the emulsion obtained in S3, then raise the temperature at a rate of 30°C / min and pass it through 3.5m 3 / min of fast-flow argon, and then reduce to 0.8m after reaching a temperature of 325°C 3 / min slow-flow argon, and...

Embodiment 2

[0050] S1: Add oleic acid, octadecene and octadecylamine into a three-necked flask at a volume ratio of 50:45:5, with a total volume of 20ml; then add 0.5% of the total mass of sodium oleate, and heat and stir to form a uniform solvent;

[0051] S2: The aqueous solution of 1 mmol lithium chloride, 0.61 mmol lanthanum chloride, 0.17 mmol ytterbium chloride, 0.03 mmol erbium chloride, 0.19 mmol aluminum chloride and 6 mmol ammonium fluoride is dropped into S1 in sequence In the obtained solvent, wherein the concentration of the aqueous solution of lithium chloride, lanthanum chloride, ytterbium chloride, erbium chloride, aluminum chloride and ammonium fluoride is 1mol / L;

[0052] S3: heat the solution obtained in S2 at 160°C for 40 minutes, evaporate and remove water, and obtain an emulsion;

[0053] S4: Vacuumize the emulsion obtained in S3, then raise the temperature at a rate of 30°C / min and pass it through 3.5m 3 / min of fast-flow argon, and then reduce to 0.8m after reachi...

Embodiment 3

[0059] S1: Add oleic acid, octadecene and octadecylamine into a three-necked flask at a volume ratio of 50:45:5, with a total volume of 20ml; then add 0.5% of the total mass of sodium oleate, and heat and stir to form a uniform solvent;

[0060] S2: The aqueous solution of 1 mmol lithium chloride, 0.52 mmol lanthanum chloride, 0.17 mmol ytterbium chloride, 0.03 mmol erbium chloride, 0.28 mmol aluminum chloride and 6 mmol ammonium fluoride is dropped into S1 in sequence In the obtained solvent, wherein the concentration of the aqueous solution of lithium chloride, lanthanum chloride, ytterbium chloride, erbium chloride, aluminum chloride and ammonium fluoride is 1mol / L;

[0061] S3: heat the solution obtained in S2 at 160°C for 40 minutes, evaporate and remove water, and obtain an emulsion;

[0062] S4: Vacuum the emulsion obtained in S3, then raise the temperature at a rate of 30°C per minute and pass it through 3.5m 3 / min of fast-flow argon, and then reduce to 0.8m after re...

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Abstract

The invention relates to a fluoride photo-thermal bifunctional nano material and a preparation method thereof, and belongs to the technical field of inorganic non-metallic materials, the preparation process technology of nano metal fluoride and the photo-thermal technical field. The invention discloses a fluoride photo-thermal bifunctional nano material, the chemical expression of which is LiLa (1-x-y-z) AlxYbyErzF4, x is more than 0 and less than or equal to 0.28, y is equal to 0.17, z is equal to 0.03, x is the molar concentration of aluminum ions, y is the molar concentration of ytterbium, z is the molar concentration of erbium, and 1-x-y-z is the molar concentration of lanthanum; the photo-thermal dual-function nano material is a hexagonal phase nanosphere, and the grain size is 20-23 nm. The preparation method has the beneficial effects that the fluoride LiLa (1-x-y-z) AlxYbyErzF4 photo-thermal difunctional nanocrystal powder prepared by the preparation method is high in purity and good in uniformity, and has excellent luminescence and heating characteristics; the matrix phonon energy can be effectively regulated and controlled by controlling the proportion of lanthanum and aluminum ions, so that the heating efficiency is remarkably improved while the excellent luminescence characteristic is kept.

Description

technical field [0001] The invention relates to a fluoride photothermal dual-functional nano material and a preparation method thereof, which belong to the technical field of inorganic non-metallic materials, nanometer metal fluoride preparation technology and photothermal technology. Background technique [0002] Lithium rare earth fluoride (LiREF 4 , where RE is a rare earth) is a non-metallic material with very good optical properties, for example, Yb 3+ and Er 3+ Ion-doped LiYF 4 Crystals can emit red, yellow, green, blue, purple and other visible light under the excitation of infrared or ultraviolet light; due to their huge potential application value in the fields of biological imaging, colorful display and special light sources, many scientific research institutions and companies in the world are A lot of manpower and material resources have been invested in the in-depth study of the controllable synthesis of rare earth lithium fluoride and its up-conversion and do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85B82Y20/00B82Y30/00
CPCC09K11/7773B82Y20/00B82Y30/00
Inventor 刘云新邓子石吴笑峰
Owner 湖南工商大学
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