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Nanocrystal, preparation method and application thereof

A nanocrystal, monoclinic crystal phase technology, applied in the field of materials, achieves the effects of simple preparation scheme, simple preparation process, environmental protection and easy collection

Pending Publication Date: 2022-01-07
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no monoclinic rare earth-doped gadolinium oxide nanomaterial prepared by liquid-phase laser method. Therefore, it is necessary to develop a method for preparing monoclinic rare-earth-doped gadolinium oxide nanocrystals by liquid-phase laser method.

Method used

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  • Nanocrystal, preparation method and application thereof
  • Nanocrystal, preparation method and application thereof
  • Nanocrystal, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The nanocrystal preparation steps of this example are as follows:

[0067] 1) Select gadolinium oxide with a purity of 99.99% and amorphous erbium oxide powder with a purity of 99.99% as raw materials, the total molar amount of gadolinium oxide and erbium oxide is 0.01mol, and the molar ratio of gadolinium oxide and erbium oxide is 99.5:0.5 to prepare raw materials . The prepared raw materials were placed in a mortar, and 3 mL of absolute ethanol was added to grind until dry, and the dried powder was continued to be ground for 60 minutes, and then 1.5 mL of 1788 polyvinyl alcohol glue with a mass fraction of 10% was added (the solvent was dehydrated Ionized water) is fully mixed with gadolinium oxide and erbium oxide powder, and the mixed material is baked at 50° C. for 8 minutes in a blast drying oven, and then continues to be ground into powder;

[0068] 2) Pour the powder into a tableting mold with a tablet diameter of 15mm, then use a tablet machine to press the po...

Embodiment 2

[0071] The difference between the preparation steps of nanocrystals in this example and Example 1 is that the molar ratio of gadolinium oxide to erbium oxide is 98:2, and the rest of the steps are identical.

Embodiment 3

[0073] The difference between the preparation steps of nanocrystals in this example and Example 1 is that the molar ratio of gadolinium oxide to erbium oxide is 95:5, and the rest of the steps are identical.

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Abstract

The invention discloses a nanocrystal, a preparation method and application thereof. The nanocrystal is a monoclinic crystal phase erbium oxide doped gadolinium oxide nanocrystal. The nanocrystal provided by the invention is a monoclinic crystal phase erbium oxide doped gadolinium oxide nanocrystal, and has the advantages of small particle size and controllable erbium ion doping. The monoclinic crystal phase erbium oxide doped gadolinium oxide nanocrystal is prepared by combining a solid-phase sintering method with a liquid-phase laser ablation technology, wherein the method is simple in preparation process and environmentally friendly. The nanocrystal has low cytotoxicity and an excellent up-down conversion dual-mode fluorescence function, can be applied to the fields of biological imaging and LED illumination, and is an excellent fluorescent material.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a nanocrystal and its preparation method and application. Background technique [0002] Gadolinium oxide is a widely used metal oxide material, because of its low phonon energy and stable physical and chemical properties, it is suitable for use as a luminescent host for fluorescent materials. In addition, gadolinium ions are easily doped by other rare earth ions, and the fluorescence properties can be adjusted by flexibly controlling the dopant ions. Therefore, rare earth doped gadolinium oxide multifunctional materials have attracted extensive attention from researchers. [0003] Thanks to the unique electronic structure and physical and chemical properties of rare earth ions, rare earth luminescent materials have received extensive attention in recent years. At present, rare earth luminescent materials have been used in lighting, display, medical imaging, defense and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78B82Y20/00B82Y40/00H01L33/50
CPCC09K11/7769B82Y20/00B82Y40/00H01L33/502
Inventor 陈弟虎邓华威
Owner SUN YAT SEN UNIV
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