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Method for preparing Er-Yb co-blended yttrium fluoride up-conversion luminescence hollow nanofibers

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

Inactive Publication Date: 2013-03-13
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 uniaxial electrospinning technology and fluorination technology to prepare YF 3 :Er 3+ , Yb 3+ Report on Upconversion Luminescent Hollow Nanofibers

Method used

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  • Method for preparing Er-Yb co-blended yttrium fluoride up-conversion luminescence hollow nanofibers
  • Method for preparing Er-Yb co-blended yttrium fluoride up-conversion luminescence hollow nanofibers
  • Method for preparing Er-Yb co-blended yttrium fluoride up-conversion luminescence hollow nanofibers

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Embodiment Construction

[0024] The selected yttrium oxide Y of the present invention 2 o 3 , erbium oxide Er 2 o 3 and ytterbium oxide Yb 2 o 3 The purity is 99.99%, polyvinylpyrrolidone PVP, molecular weight 10000, N,N-dimethylformamide DMF, carbon rod, ammonium bifluoride NH 4 HF 2 and nitrate HNO 3 All are commercially available analytically pure products; the glass instruments, crucibles and equipment used are commonly used instruments and equipment in laboratories. Embodiment: take a certain amount of yttrium oxide Y 2 o 3 , erbium oxide Er 2 o 3 and ytterbium oxide Yb 2 o 3 , where Y 3+ 、Er 3+ and Yb 3+ The molar ratio is 79:1:20, that is, doped erbium ions Er 3+ and ytterbium ion Yb 3+ The mole percentages are 1% and 20%, respectively, with HNO 3 Dissolved and evaporated to give Y(NO 3 ) 3 , Er(NO 3 ) 3 and Yb(NO 3 ) 3 Mix the crystals, add DMF and PVP, stir magnetically at room temperature for 4 hours, and let stand for 2 hours to form a spinning solution. The mass per...

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Abstract

The invention relates to a method for preparing Er-Yb co-regenerated yttrium fluoride up-conversion luminescence hollow nanofibers, belong to the technical field of nano-material preparation. The invention comprises four steps: (1) preparing a spinning liquid; (2) preparing a PVP / [Y(NO3)3+Er(NO3)3+Yb(NO3)3] original composite fiber by using a uniaxial electrospinning technology; (3) preparing Y2O3:Er<3+>, Yb<3+> hollow nanofibers by heating the composite fiber; and (4) preparing YF3:Er<3+>, Yb<3+> hollow nanofibers by using a double crucible method. The YF3:Er<3+>, Yb<3+> hollow nanofibers have a good crystallinity, a diameter of 148 + / - 20 nm, and a length of more than 30 [mu]m. The hollow nanofibers are important green fluorescent materials. The preparation method provided by the invention is simple, can be mass-produced, and has broad application prospects.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation research, in particular to a method for preparing erbium-ytterbium double-doped yttrium trifluoride up-conversion luminescent hollow nanofibers. 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 ha...

Claims

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Application Information

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