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Europium-doped Y7O6F9 nano fiber and preparation method thereof

A technology of Y7O6F9 and nanofibers, which is applied in the fields of nanotechnology, fiber treatment, fiber chemical characteristics, etc.

Inactive Publication Date: 2011-04-27
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Y is not seen yet 7 o 6 f 9 :Eu 3+ report on nanofibers

Method used

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  • Europium-doped Y7O6F9 nano fiber and preparation method thereof
  • Europium-doped Y7O6F9 nano fiber and preparation method thereof
  • Europium-doped Y7O6F9 nano fiber and preparation method thereof

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Embodiment

[0021] Embodiment: take by weighing 1g Y 2 o 3 and 0.0820g Eu 2 o 3 , the molar ratio of the two is 19:1, that is, the molar percentage of europium ions is 5%, evaporated after dissolving with dilute nitric acid, and obtains Y(NO 3 ) 3 and Eu(NO 3 ) 3 Mix the crystals, add 23.6205g DMF solvent, and then add 2.5925g PVP to the above solution, magnetically stir at room temperature for 4 hours, and let stand for 2 hours to form a spinning solution. The mass percentages of the components of the spinning solution are: rare earth nitrate content 9%, PVP content 9%, solvent DMF content 82%. Add the prepared spinning solution into the liquid storage tube of the spinning device for electrospinning, the nozzle diameter is 0.7mm, the angle between the nozzle and the horizontal plane is adjusted to 15°, a DC voltage of 13kV is applied, the curing distance is 15cm, and the room temperature is 18 ~30℃, relative humidity 50%~70%, get PVP / [Y(NO 3 ) 3 +Eu(NO 3 ) 3 ] Composite nanofi...

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Abstract

The invention relates to a europium-doped Y7O6F9 nano fiber and a preparation method thereof, belonging to the technical field of the preparation of nano materials. A rare earth fluoride / rare earth oxyfluoride composite nano fiber is prepared by the traditional electrostatic spinning technology. The preparation method provided by the invention comprises the following three steps: (1) preparation of a Y2O3:5%Eu<3+> nano fiber: preparing a PVP / [Y(NO3)3+Eu(NO3)3] composite nano fiber by adopting the electrostatic spinning technology, and then, carrying out heat treatment to obtain the Y2O3:5%Eu<3+> nano fiber; (2) preparation of a YF3:5%Eu<3+> nano fiber: fluorinating the Y2O3:5%Eu<3+> nano fiber by a double-crucible method to obtain the YF3:5%Eu<3+> nano fiber, wherein the fluorinating reagent is ammonium bifluoride; and (3) preparation of a Y7O6F9:5%Eu<3+> nano fiber: placing the YF3:5%Eu<3+> nano fiber in a muffle furnace, heating at 580 DEG C under the air atmosphere for 9 hours to obtain the Y7O6F9:5%Eu<3+> nano fiber, wherein the diameter is 181-241 nm, and the length is greater than 300 mu m. The europium-doped Y7O6F9 nano fiber is a novel important red nano fluorescent material having wide application prospects.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to europium-doped Y 7 o 6 f 9 Nanofibers and methods for their preparation. Background technique [0002] Nanofiber refers to a linear material with two dimensions in the nanoscale on the three-dimensional space scale of the material, usually the radial dimension is on the order of nanometers, and the length is relatively large. Since the radial scale of nanofibers is as small as nanometers, it shows a series of characteristics, the most prominent is the large specific surface area, which increases its surface energy and activity, and then produces small size effects, surface or interface effects, and quantum size effects. , macroscopic quantum tunneling effect, etc., and therefore exhibit a series of chemical and physical (heat, light, sound, electricity, magnetism, etc.) aspects of specificity. In the prior art, there are many methods for preparing nanofibers,...

Claims

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Application Information

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IPC IPC(8): D01F9/10D01F11/00D01D5/00B82Y40/00
Inventor 董相廷王进贤侯远刘桂霞于文生赵恩贵
Owner CHANGCHUN UNIV OF SCI & TECH
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