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NH4Yb2F7-based nanoparticles and preparation method and application thereof

A technology of nanoparticles and clarified solution, applied in the fields of nanotechnology, nano-optics, nanotechnology, etc., can solve problems such as lack of realization, shorten the time of synthesis process, solve hidden dangers of biological safety and environmental pollution, and speed up the synthesis process. Effect

Pending Publication Date: 2020-08-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, there is a lack of realization of NH 4 Yb 2 f 7 Ultra-fast, green synthetic routes to compounds and UCL

Method used

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  • NH4Yb2F7-based nanoparticles and preparation method and application thereof
  • NH4Yb2F7-based nanoparticles and preparation method and application thereof
  • NH4Yb2F7-based nanoparticles and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Dissolve 1 mmol of ytterbium nitrate in 20 mL of distilled water, and form a transparent solution by magnetic stirring; then dissolve 8 mmol of ammonium fluoride in the transparent solution; at room temperature of 25 degrees, after one minute of reaction time, a milky white mixture is obtained. solution. Use a centrifuge for solid-liquid separation at a centrifugal rate of 5000 rpm to obtain a white powder; dry the white powder at 50°C to obtain NH 4 Yb 2 f 7 Nano powder.

[0046] Such as figure 1 As shown, the obtained NH 4 Yb 2 f 7 The powder is scanned by X-ray diffractometer between 10 and 50 degrees, all diffraction peaks and NH 4 Yb 2 f 7 The standard card (PDF: 00-043-0845) is completely consistent, without any miscellaneous peaks, proving that the obtained powder is NH 4 Yb 2 f 7 pure phase. Among them, the standard card (PDF: 000-043-0845) is a pure hexagonal phase structure, and the lattice constant is processed as a=b after refinement and fitting...

Embodiment 2

[0049] Dissolve ytterbium nitrate and thulium nitrate in 20ml of deionized water at a molar ratio of 0.9:0.1, and form a transparent solution by magnetic stirring; then dissolve 9 mmol of ammonium fluoride in the transparent solution; react at room temperature 40 degrees for one minute After time, a milky white mixed solution was obtained. Use a centrifuge for solid-liquid separation at a centrifugal rate of 8000 rpm to obtain a white powder; dry the white powder at 70°C to obtain Tm-doped NH 4 Yb 2 f 7 Nano powder.

[0050] Such as image 3 As shown, the obtained NH 4 wxya 7 The powder is scanned by X-ray diffractometer between 10 and 50 degrees, all diffraction peaks and NH 4 Yb 2 f 7 The standard card (PDF: 00-043-0845) is completely consistent without any miscellaneous peaks, which proves that the obtained powder is NH 4 Yb 2 f 7 phase structure and doping with 10% Tm did not change the NH 4 wxya 7 Structure.

Embodiment 3

[0052] Dissolve ytterbium nitrate and thulium nitrate in 20ml of water at a molar ratio of 0.8:0.2, and form a transparent solution by magnetic stirring; then dissolve 20mmol of ammonium fluoride in the transparent solution; After a reaction time, a milky white mixed solution was obtained. Use a centrifuge for solid-liquid separation at a centrifugation rate of 9000 rpm to obtain a white powder; dry the white powder at 80°C to obtain Tm-doped NH 4 Yb 2 f 7 Nano powder.

[0053] Such as Figure 4 As shown, the obtained NH 4 Yb 2 f 7 The powder is scanned by X-ray diffractometer between 10 and 50 degrees, all diffraction peaks and NH 4 Yb 2 f 7 The standard card (PDF: 00-043-0845) is completely consistent, without any miscellaneous peaks, proving that the obtained powder is NH 4 Yb 2 f 7 phase and 20% Tm doping did not change the NH 4 Yb 2 f 7 Structure.

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Abstract

The invention discloses NH4Yb2F7-based nanoparticles and a preparation method and application thereof. Rare earth nitrate is dissolved in a solvent to prepare a clear solution A, and fluorine ammoniumsalt is dispersed in the clear solution A to prepare a milk white mixed solution B; solid-liquid separation is performed on the milk white mixed solution B to obtain white powder C; and the powder Cis dried to obtain the spherical NH4Yb2F7-based nano powder. The method is simple and feasible in process and good in repeatability, the whole reaction system does not pollute the environment, and theprovided process route not only has good application prospects and economic benefits, but also has important practical value.

Description

technical field [0001] The present invention belongs to inorganic ternary NH 4 Yb 2 f 7 The technical field of compound nanopowder preparation, specifically relates to a kind of NH 4 Yb 2 f 7 Nanoparticles and their preparation methods and applications. Background technique [0002] Up-conversion (UC) luminescent materials have attracted extensive attention due to their unique properties of converting infrared wavelengths invisible to naked eyes into visible light wavelengths. UC materials have the advantages of weak autofluorescence and high penetration depth of biological organisms, and have potential application prospects in the fields of biological imaging and detection. Therefore, many synthetic methods have been proposed to realize upconversion nanoparticles. Especially the ultra-fast synthetic routes developed in recent years. The disadvantage is that the ethylene glycol (EG) solvent used in the study is a potential threat to the environment, because EG has ce...

Claims

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Application Information

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IPC IPC(8): C01F17/36C01F17/10C09K11/85B82Y20/00B82Y40/00
CPCC01F17/36C01F17/10C09K11/7772B82Y20/00B82Y40/00C01P2004/32C01P2006/60C01P2002/72C01P2004/03C01P2002/85
Inventor 李祥王芸葛万银
Owner SHAANXI UNIV OF SCI & TECH
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