Method for preparing upconversion nanometer material taking NaLuF4 as base material

A nanomaterial and matrix technology, which is applied in the field of preparation of upconversion nanomaterials, can solve the problems of difficulty in obtaining, restricting the development of upconversion materials, and reducing the luminous efficiency of materials, and achieves improved luminous efficiency, good upconversion luminescence performance and morphology. controllable effect

Inactive Publication Date: 2013-05-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But usually pure β phase (hexagonal structure) NaYF 4 It is difficult to obtain, mostly α phase (cubic structure), and β phase coexists, which reduces the luminous efficiency of the material
In addition, most of the current focus is on NaYF 4 Carry out material synthesis research for the matrix, and the research on the upconversion characteristics of other homologous matrixes is rarely reported, which limits the further development of this kind of upconversion materials to a certain extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment relates to a NaLuF 4 A preparation method for an upconversion nanomaterial of a matrix, comprising the steps of:

[0025] Step 1, take 25ml of yttrium oxide, ytterbium oxide, and holmium oxide in a molar ratio of 20:18:2 and dissolve it in 2mol / L hydrochloric acid solution, add deionized water to prepare a rare earth chloride salt solution with a concentration of 0.05mol / L Add 2ml of 0.01mol / L ethylenediaminetetraacetic acid aqueous solution, stir evenly for 20min, add 5ml of 2.5mol / L sodium fluoride aqueous solution, stir for 30min to obtain A solution;

[0026] Step 2: Put the solution A into the reaction kettle, conduct a hydrothermal reaction at 170°C, and cool for 10 hours to obtain the solution B;

[0027] Step 3: Heating solution B, separating by precipitation, washing, and drying at 75°C for 10 hours to obtain the final product NaLuF 4 Substrate upconversion nanomaterials.

[0028] Implementation effect: the product obtained in this example is...

Embodiment 2

[0030] This embodiment relates to a NaLuF 4 A preparation method for an upconversion nanomaterial of a matrix, comprising the steps of:

[0031] Step 1, take 26ml of yttrium oxide, ytterbium oxide, and holmium oxide in a molar ratio of 25:18:2 and dissolve it in 3mol / L hydrochloric acid solution, add deionized water to prepare a rare earth chloride salt solution with a concentration of 0.1mol / L Add 3ml of 0.1mol / L ethylenediaminetetraacetic acid aqueous solution, stir evenly for 25min, add 6ml of 2.5mol / L sodium fluoride aqueous solution, stir for 35min to obtain A solution;

[0032] Step 2, put the solution A into the reactor, conduct a hydrothermal reaction at 175°C, and cool for 10 hours to obtain the solution B;

[0033] Step 3: Heating solution B, separating by precipitation, washing, and drying at 75°C for 12 hours to obtain the final product NaLuF 4 Substrate upconversion nanomaterials.

[0034] Implementation effect: the product obtained in this example is NaLuF 4 ...

Embodiment 3

[0036] This embodiment relates to a NaLuF 4 A preparation method for an upconversion nanomaterial of a matrix, comprising the steps of:

[0037] Step 1, take 30ml of yttrium oxide, ytterbium oxide, and holmium oxide in a molar ratio of 30:18:2 and dissolve it in 4mol / L hydrochloric acid solution, add deionized water to prepare a rare earth chloride salt solution with a concentration of 0.2mol / L Add 4ml of 0.3mol / L ethylenediaminetetraacetic acid aqueous solution, stir evenly for 20min, add 7ml of 3mol / L sodium fluoride aqueous solution, stir for 40min to obtain A solution;

[0038] Step 2: Put the solution A into the reaction kettle, conduct a hydrothermal reaction at 185°C, and cool for 13 hours to obtain the solution B;

[0039] Step 3: Heating solution B, separating by precipitation, washing, and drying at 80°C for 13 hours to obtain the final product NaLuF 4 Substrate upconversion nanomaterials.

[0040] Implementation effect: the product obtained in this example is NaL...

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Abstract

The invention provides a method for preparing an upconversion nanometer material taking NaLuF4 as a base material, which includes the following steps: Step I, adding rare-earth chloride solution into ethylene diamine tetraacetic acid solution, uniformly stirring, and adding the solution into sodium fluoride water solution, stirring to obtain a solution A; Step II, adding the solution A to a reaction still for hydrothermal reaction, and cooling to obtain a solution B; and Step III, heating the solution B, and obtaining the end product, the upconversion nanometer material taking the NaLuF4 as the base material, after precipitation separation, washing and stoving. According to the invention, hydrochloric acid serves as solvent of rare earth oxide, ethylene diamine tetraacetic acid serves as surface appearance control agent, and the upconversion nanometer material taking the NaLuF4 as the base material can be prepared after the hydrothermal reaction; the prepared upconversion nanometer material taking the NaLuF4 as the base material has the characteristics of controllable surface appearance, excellent dispersity, excellent up-conversion luminescence performance, and the like; and the method has simple equipment, is easy to operate, facilitates mass production and popularization, and has better application prospects.

Description

technical field [0001] The present invention relates to the preparation method of nano-luminescence material, specifically, relates to using NaLuF 4 A method for the preparation of matrix-based upconversion nanomaterials. Background technique [0002] The so-called up-conversion luminescence refers to the phenomenon of converting two or more low-energy photons into one high-energy photon. Since rare earth nano-up conversion luminescent materials have broad application prospects in the fields of up-conversion phosphors, biomolecular fluorescent probes, and high-resolution displays, nano-up conversion luminescent materials have become a new field of up-conversion luminescent materials and nanomaterials. Research hotspots. Compared with other fluorescent materials, up-conversion luminescent materials have the advantages of narrow emission spectrum, stable luminescent properties, no photobleaching phenomenon, and high fluorescence signal-to-noise ratio, so they have important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85
Inventor 程先华王传英李鹏飞疏达程海正雷子恒
Owner SHANGHAI JIAO TONG UNIV
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