Method for preparing europium-doped yttrium fluoride nano fiber/polymer composite nano fiber

A technology of composite nanofibers, nanofibers, applied in the direction of fiber processing, fiber chemical characteristics, filament/wire forming, etc.

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

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  • Method for preparing europium-doped yttrium fluoride nano fiber/polymer composite nano fiber
  • Method for preparing europium-doped yttrium fluoride nano fiber/polymer composite nano fiber
  • Method for preparing europium-doped yttrium fluoride nano fiber/polymer composite nano fiber

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Embodiment

[0031] Embodiment: Take a certain amount of yttrium nitrate and europium nitrate, the molar ratio of the two is 19:1, that is, the molar percentage of europium ions is 5%, dissolve them in an appropriate amount of DMF solvent, and then weigh a certain amount of PVP to add into the above solution, magnetically stirred at room temperature for 2 hours, and allowed to 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 20 ~25℃, relative humidity 50%~60%, get PVP / [Y(NO 3 ) 3 +Eu(NO 3 ) 3 ] Composite nanofibers. The PVP / [Y(NO 3 ) 3 +Eu(NO 3 ) 3...

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Abstract

The invention relates to a method for preparing europium-doped yttrium fluoride nano fiber/polymer composite nano fiber, belonging to the technical field of nano material preparation. In the prior art, rare earth fluoride nano fiber and nanoribbon, rare earth fluoride nano particle/polymer composite nano fiber are prepared. The method comprises the following three steps of: (1) preparing Y2O3:5%Eu<3+> nano fiber: preparing PVP/[Y(NO3)3+Eu(NO3)3] composite nano fiber by using the electrostatic spinning technology, and carrying out thermal treatment to obtain the Y2O3:5%Eu<3+> nano fiber; (2) preparing YF3:5%Eu<3+> nano fiber: fluoridizing the Y2O3:5%Eu<3+> nano fiber by using the double crucible method to obtain the YF3:5%Eu<3+> nano fiber; and (3) preparing YF3:5%Eu<3+> nano fiber/PVP composite nano fiber: mixing the YF3:5%Eu<3+> nano fiber with PVP and DMF to obtain a spinning solution, and preparing the YF3:5%Eu3<3+> nano fiber/PVP composite nano fiber by using the electrostatic spinning technology. The diameter of the YF3:5%Eu<3+>nano fiber/PVP composite nano fiber is 276-362 nm, and the length is greater than 1 mm. The method is simple and feasible and has broad application prospect.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a preparation method of europium-doped yttrium fluoride nanofiber / polymer composite nanofiber. 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 pr...

Claims

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Application Information

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IPC IPC(8): D01F8/10D01F8/18D01F9/10D01F11/00D01D5/00
Inventor 董相廷侯远王进贤刘桂霞于文生徐佳
Owner CHANGCHUN UNIV OF SCI & TECH
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