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Neodymium doped strontium fluorophosphate nano-microspheres and preparation method thereof

A technology of strontium fluorophosphate and nano-microspheres, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as the difficulty in obtaining large-volume or composite dielectric scalable laser oscillators, and facilitate scale expansion The effects of chemicalization, easy availability of raw materials, and large output

Inactive Publication Date: 2018-06-12
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this laser-grade anisotropic single crystal is grown using a melt-grown method, which is difficult to obtain bulky or composite media to ensure energy scalability and laser oscillator functionality.

Method used

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  • Neodymium doped strontium fluorophosphate nano-microspheres and preparation method thereof
  • Neodymium doped strontium fluorophosphate nano-microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A neodymium-doped strontium fluorophosphate spherical particle, its preparation method includes the following steps:

[0022] 1) Weigh 10.26g Sr(NO 3 ) 2 And 0.66g Nd(NO 3 ) 3 ·6H 2 O raw material, add deionized water to prepare a cation mixture with a cation concentration of 0.05mol / L; weigh 0.52g NH 4 F and 4.56g (NH 4 ) 2 HPO 4 Raw materials, add deionized water to prepare an anion solution with an anion concentration of 0.05 mol / L;

[0023] 2) Pour the anion solution into the dissolved Sr at a speed of 600mL / min 2+ And Nd 3+ The mixed solution is obtained from the cation solution of the mixed solution, the molar ratio of the elements in the mixed solution Sr:P:F=5:3:1, stir with a magnetic stirrer for 20min at a stirring rate of 500r / min to fully react, and the resulting product is allowed to stand for 20min Get the product

[0024] 3) The product obtained in step 2) is subjected to ultrasonic cleaning and centrifugal separation (4 times, 10 min / time) to obtain Nd 3+ :Sr 5...

Embodiment 2

[0029] A neodymium-doped strontium fluorophosphate spherical particle, its preparation method includes the following steps:

[0030] 1) Weigh 10.05g Sr(NO 3 ) 2 And 1.096g Nd(NO 3 ) 3 ·6H 2 O raw material, add deionized water to prepare a cation mixed solution with a cation concentration of 0.1mol / L; weigh 0.43g NH 4 F and 4.58g (NH 4 ) 2 HPO 4 Raw materials, add deionized water to prepare an anion solution with an anion concentration of 0.1 mol / L;

[0031] 2) Pour the anion solution into the dissolved Sr at a speed of 600mL / min 2+ And Nd 3+ The mixed solution is obtained in the cation solution of the mixed solution, the molar ratio of the elements in the mixed solution Sr:P:F=5:3:1, stir with a magnetic stirrer for 20min at a stirring rate of 500r / min to fully react, and the resulting product is allowed to stand for 30min Get product

[0032] 3) The product obtained in step 2) is subjected to ultrasonic cleaning and centrifugal separation (4 times, 10 min / time) to obtain Nd 3+ :Sr 5...

Embodiment 3

[0036] A neodymium-doped strontium fluorophosphate spherical particle, its preparation method includes the following steps:

[0037] 1) Weigh 10.37g Sr(NO 3 ) 2 And 0.438g Nd(NO 3 ) 3 ·6H 2 O raw material, add deionized water to prepare a cation mixed solution with a cation concentration of 0.05mol / L; weigh 0.45g NH 4 F and 4.5g (NH 4 ) 2 HPO 4 Raw materials, add deionized water to prepare an anion solution with an anion concentration of 0.05 mol / L;

[0038] 2) Pour the anion solution into the dissolved Sr at a speed of 400mL / min 2+ And Nd 3+ The mixed solution is obtained in the cation solution of the mixed solution, the molar ratio of the elements in the mixed solution Sr:P:F=5:3:1, stir with a magnetic stirrer for 20min at a stirring rate of 500r / min to fully react, and the resulting product is allowed to stand for 30min Get product

[0039] 3) The product obtained in step 2) is subjected to ultrasonic cleaning and centrifugal separation (4 times, 10 min / time) to obtain Nd 3+ :Sr ...

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Abstract

The invention relates to neodymium doped strontium fluorophosphate nano-microspheres and a preparation method thereof. The average particle size of the neodymium doped strontium fluorophosphate nano-microspheres is 30-50 nanometers, and the neodymium doped strontium fluorophosphate nano-microspheres are even in particle size distribution. The preparation method includes the steps of firstly, dissolving Sr(NO3)2 and Nd(NO3)3 6H2O into deionized water to obtain a cation solution; secondly, dissolving NH4F and (NH4)2HPO4 into deionized water to obtain an anion solution; thirdly, adding the anionsolution into the cation solution, evenly stirring, standing, performing ultrasonic cleaning and centrifugal separation to obtain precipitates, drying the precipitates, and grinding to obtain the neodymium doped strontium fluorophosphate nano-microspheres. The preparation method has the advantages that the products are prepared through a precipitation method, nucleus growth rate is controlled by optimized process conditions such as reactant concentration and mixing rate, and the neodymium doped strontium fluorophosphate nano-microspheres which are good in dispersity and have near-spherical morphology.

Description

Technical field [0001] The invention belongs to the technical field of inorganic powder materials, and specifically relates to a neodymium-doped strontium fluorophosphate nanosphere and a preparation method thereof. Background technique [0002] The Lawrence Livermore National Laboratory (LLNL) of the United States once doped rare earth fluorapatite materials [0003] (RE:M 10 (PO 4 ) 6 F 2 , M=Ca, Sr, space group is P 6 3 / m ) Conducted research and studies have shown that due to the large absorption, emission cross-section, and long fluorescence lifetime of this type of material, it exhibits excellent optical properties in high-power laser operation at room temperature (Reference SAPayne, LKSmith, LDDeLoach, et al. Laser,optical,and Thermo-mechanical properties of Yb-doped fluorapatite[J].IEEE J.Select.Top.QuantumElectron,1994,30(1):170-179), at the same time ytterbium doped strontium fluorophosphate (Yb :SFAP) single crystal has achieved an energy output of 100J (references RMYa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/455B82Y30/00C04B35/447C09K11/73
CPCC01B25/455B82Y30/00C01P2002/72C01P2004/03C01P2004/32C01P2004/64C04B35/447C09K11/7757
Inventor 宋京红王同信梅炳初
Owner WUHAN UNIV OF TECH
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