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Neodymium-doped lutetium lithium fluoride nanomaterial as well as preparation method and application thereof

A technology of neodymium lutetium fluoride lithium and nanomaterials, which is applied in the field of nanomaterial preparation, can solve the problems of irregular size, large consumption of raw materials, and unfavorable promotion, etc., and achieve large-scale industrial production and easy large-scale industrial production , the effect of solving the solubility problem

Inactive Publication Date: 2018-11-16
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid-phase method is easy to operate and the process is simple, but it has the following disadvantages: (1) large consumption of raw materials; (2) uneven doping of rare earth; (3) irregular shape of the finished product; (4) irregular size and irregular growth. uniform
This improved method puts forward higher requirements on the experimental conditions, and consumes a lot of energy at the same time, which does not conform to the concept of resource conservation.
In addition, the way of adding and dissolving materials through the whole process of argon protection greatly increases the cost of production, which is not conducive to the promotion of industrialization
However, the problem of co-solubility of rare earth nitrate salts and fluoride salts doped with ions in oleic acid solvent cannot be well solved by exploring the method of feeding in succession.

Method used

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  • Neodymium-doped lutetium lithium fluoride nanomaterial as well as preparation method and application thereof
  • Neodymium-doped lutetium lithium fluoride nanomaterial as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Follow LiLu m Nd n f 4 The molar ratio of each atom in the chemical formula weighs the following materials in corresponding molar quantities: 1mmol lithium hydroxide, 0.99mmol lutetium stearate, 4mmol ammonium fluoride and 0.01mmol neodymium nitrate, wherein m=0.99; n=0.01. Add 50ml of methanol and 50ml of water in a beaker at a volume ratio of 1:1 as a solvent, then add 4mmol of ammonium fluoride and 0.01mmol of neodymium nitrate as a solute, and simultaneously heat, heat, and magnetically stir at 50°C to form fluorine Methanol and aqueous solution of ammonium fluoride and neodymium nitrate; then dissolve 1mmol lithium hydroxide in 10ml of deionized water, and then drop into the methanol and aqueous solution of ammonium fluoride and neodymium nitrate at a titration rate of 1ml / min, with constant stirring , the stirring time is 3h, and the separation system I is formed. According to the volume ratio of 1:3, add 10ml oleic acid and 30ml octadecene in the beaker as a s...

Embodiment 2

[0074] Follow LiLu m Nd n f 4 The molar ratio of each atom in the chemical formula weighs the following materials in corresponding molar quantities: 1mmol lithium hydroxide, 0.98mmol lutetium stearate, 4mmol ammonium fluoride and 0.02mmol neodymium nitrate, wherein m=0.98; n=0.02. Add 50ml of methanol and 50ml of water in a beaker at a volume ratio of 1:1 as a solvent, then add 4mmol of ammonium fluoride and 0.02mmol of neodymium nitrate as a solute, and simultaneously heat, heat, and magnetically stir at a temperature of 55°C to form fluorine Methanol and aqueous solution of ammonium fluoride and neodymium nitrate; then 1mmol lithium hydroxide was dissolved in 10ml deionized water, and then dropped into the methanol and aqueous solution of ammonium fluoride and neodymium nitrate at a titration rate of 1.5ml / min, accompanied by non-stop Stir for 2.5 hours to form a separation system I. According to the volume ratio of 1:3, add 10ml oleic acid and 30ml octadecene as a solven...

Embodiment 3

[0076] Follow LiLu m Nd n f 4The molar ratio of each atom in the chemical formula weighs the following materials in corresponding molar quantities: 1mmol lithium hydroxide, 0.97mmol lutetium stearate, 4mmol ammonium fluoride and 0.03mmol neodymium nitrate, wherein m=0.97; n=0.03. Add 50ml of methanol and 50ml of water in a beaker at a volume ratio of 1:1 as a solvent, then add 4mmol of ammonium fluoride and 0.03mmol of neodymium nitrate as a solute, and simultaneously heat, heat, and magnetically stir at 60°C to form fluorine Methanol and aqueous solution of ammonium fluoride and neodymium nitrate; then dissolve 1mmol lithium hydroxide in 10ml of deionized water, and then drop into the methanol and aqueous solution of ammonium fluoride and neodymium nitrate at a titration rate of 2ml / min, with continuous stirring , the stirring time is 2h, and the separation system I is formed. According to the volume ratio of 1:3, add 10ml oleic acid and 30ml octadecene as a solvent in a b...

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Abstract

The invention discloses a neodymium-doped lutetium lithium fluoride nanomaterial as well as a preparation method and an application thereof. The chemical formula of the material is represented as theformula (I): LiLumNdnF4, wherein m is larger than 0 and smaller than 1, n is larger than 0 and smaller than 1, and the sum of m and n is 1. The use equipment is simple, the preparation process is simple and easy, the preparation cost is low, the production speed is high, prepared powder is good in uniformity and relatively high in purity, the operability is high, industrial production is facilitated, and the material has good industrial popularization value.

Description

technical field [0001] The application relates to a neodymium-doped lithium lutetium fluoride nanomaterial and its preparation method and application, belonging to the technical field of nanomaterial preparation. Background technique [0002] Upconversion luminescence is an anti-Stokes process in which a short wavelength photon is emitted by absorbing two or more long wavelengths. At present, researchers have discovered the phenomenon of upconversion luminescence on rare earth elements, transition metal compounds and organic dyes. Fluoride, oxide, sulfur-containing compound, oxyfluoride and halide materials doped with rare earth ions are currently the most widely used up-conversion luminescent materials. Rare earth-doped upconversion luminescent materials have great application value in information storage, solar cells, optoelectronic devices, and fluorescent biomarkers. [0003] The matrix of the up-conversion luminescent material needs to have the following excellent cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85B82Y40/00B82Y20/00
CPCB82Y20/00B82Y40/00C09K11/7773
Inventor 邱智华吴少凡王帅华孙宝平
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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