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Preparation method for terbium doped yttrium trifluoride green luminescence hollow nano-fibers

A hollow nano, yttrium trifluoride technology, used in chemical instruments and methods, luminescent materials, fiber processing, etc.

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

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Problems solved by technology

At present, there is no combination of coaxial electrospinning technology and fluorination technology to prepare YF 3 :Tb 3+ Report on Green Luminescent Hollow Nanofibers

Method used

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  • Preparation method for terbium doped yttrium trifluoride green luminescence hollow nano-fibers
  • Preparation method for terbium doped yttrium trifluoride green luminescence hollow nano-fibers
  • Preparation method for terbium doped yttrium trifluoride green luminescence hollow nano-fibers

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Experimental program
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Embodiment

[0024] Embodiment: take a certain amount of yttrium oxide Y 2 o 3 and terbium oxide 4 o 7 , where Y 3+ and Tb 3+ The molar ratio of the terbium ion is 95:5, that is, the molar percentage of terbium ion is 5%, and the nitrate HNO 3 Dissolved and evaporated to give Y(NO 3 ) 3 and Tb(NO 3 ) 3 Mix the crystals, add N, N-dimethylformamide DMF solvent and polyvinylpyrrolidone PVP with a molecular weight of 1300000, stir magnetically at room temperature for 4 hours, and let stand for 2 hours to form a shell spinning solution. The mass percentages of the components in the formula are: 9% nitrate content, 9% PVP content, and 82% solvent DMF content. Dissolve PVP with a molecular weight of 90,000 in ethanol, stir magnetically at room temperature for 4 hours, and let it stand for 2 hours to form The core layer spinning solution, the mass percentage of each component in the core layer spinning solution is: PVP content 9%, solvent ethanol content 91%; coaxial electrospinning techn...

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Abstract

The present invention relates to a preparation method for terbium doped yttrium trifluoride green luminescence hollow nano-fibers, and belongs to the technical field of nano-material preparation. The preparation method of the present invention comprises the following four steps: (1) preparing a spinning solution; (2) adopting a coaxial electrospinning technology to prepare PVP / [PVP+Y(NO3)3+Tb(NO3)3] composite coaxial fibers; (3) preparing Y2O3:5%Tb<3+> hollow nano-fibers, wherein a heat treatment is performed on the composite coaxial fibers to prepare the Y2O3:5%Tb<3+> hollow nano-fibers; and (4) preparing YF3:5%Tb<3+> green luminescence hollow nano-fibers, wherein a dual crucible method is adopted, and ammonium bifluoride is adopted to carry out a fluorination treatment on the Y2O3:5%Tb<3+> hollow nano-fibers to obtain the YF3:5%Tb<3+> green luminescence hollow nano-fibers, and the YF3:5%Tb<3+> green luminescence hollow nano-fibers have characteristics of good crystallinity, a diameter of 118.1-157.7 nm, and a length more than 30 mum. The preparation method of the present invention has characteristics of simplenss, easy performing, mass production, and broad application prospects.

Description

technical field [0001] The invention relates to the field of preparation and research of nanometer materials, in particular to a method for preparing green luminescent hollow nanofibers doped with terbium yttrium trifluoride. 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. Hollow nanofibers will have wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D01F11/00D01F8/10D01D5/00D01D5/34D01D5/24D01D1/02C09K11/85
Inventor 董相廷于文生李丹王进贤刘桂霞浦利
Owner CHANGCHUN UNIV OF SCI & TECH