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Preparation method of terbium-doped octafluoro yttrium barium green luminescent nano-fiber

A technology of terbium octafluoroyttrium barium and nanofibers, which is applied in the field of preparation of green luminescent nanofibers doped with terbium octafluoroyttrium barium

Inactive Publication Date: 2014-07-02
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no combination of electrospinning technology and fluorination technology to prepare terbium-octafluorine-doped yttrium-barium BaY 2 f 8 :Tb 3+ Report on Green Luminescent Nanofibers

Method used

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  • Preparation method of terbium-doped octafluoro yttrium barium green luminescent nano-fiber
  • Preparation method of terbium-doped octafluoro yttrium barium green luminescent nano-fiber
  • Preparation method of terbium-doped octafluoro yttrium barium green luminescent nano-fiber

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Embodiment

[0023] Embodiment: take a certain amount of barium nitrate Ba(NO 3 ) 2 , Yttrium oxide Y 2 o 3 and terbium oxide 4 o 7 , where Ba 2+ , Y 3+ and Tb 3+ The molar ratio of 50:95:5, that is, the molar percentage of terbium ions is 5%, the yttrium oxide Y 2 o 3 and terbium oxide 4 o 7 HNO 3 Dissolved and evaporated to give Y(NO 3 ) 3 and Tb(NO 3 ) 3 Mix crystals, add barium nitrate Ba(NO 3 ) 2 , N, N-dimethylformamide DMF solvent and polyvinylpyrrolidone PVP, magnetically stirred at room temperature for 4 hours, and left to stand for 2 hours to form a spinning solution. The mass percentage of each component of the spinning solution is: nitrate content 9%, PVP content 12%, solvent DMF content 79%; the prepared spinning solution is added to the liquid storage pipe of the spinning device for electrospinning, the inner diameter of the nozzle is 0.7mm, and the angle between the nozzle and the horizontal plane is adjusted to be 15 °, apply a DC voltage of 15kV, the curi...

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Abstract

The invention relates to a preparation method of terbium-doped octafluoro yttrium barium green luminescent nano-fiber, and belongs to the technical field of nano-grade material preparation. The method comprises four steps that: (1) a spinning liquid is prepared; (2) PVP / [Ba(NO3)2+Y(NO3)3+Tb(NO3)3] composite fiber is prepared with an electro-spinning technology; (3) mixed oxide nano-fiber is prepared, wherein the composite fiber is subjected to a heat treatment, such that the mixed oxide nano-fiber is prepared; and (4) BaY2F8:5% Tb<3+> green luminescent nano-fiber is prepared, wherein a double-crucible method is adopted, and the mixed oxide nano-fiber is subjected to a fluorination treatment by using ammonium bifluoride, such that the BaY2F8:5% Tb<3+> green luminescent nano-fiber is prepared. The nano-fiber has good crystallinity, a diameter of 113.9nm (plus or minus 8.7nm), and a length greater than 50mum. The method provided by the invention is simple and feasible, and can be used in batch productions. Therefore, the method has good application prospect.

Description

technical field [0001] The invention relates to the field of preparation and research of nanometer materials, in particular to a preparation method of green luminous nanofibers doped with terbium octafluoroyttrium barium. 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 m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F11/00D01F9/00D01D5/00C09K11/85
Inventor 于文生董相廷李丹杨国春王进贤刘桂霞浦利
Owner CHANGCHUN UNIV OF SCI & TECH