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Preparation method for erbium and ytterbium double-doped up-conversion luminescence nano-fiber

A nanofiber, lithium tetrafluoro yttrium technology, applied in the direction of fiber processing, fiber chemical characteristics, rayon chemical post-processing, etc.

Inactive Publication Date: 2012-09-12
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 electrospinning technology and fluorination technology to prepare LiYF 4 :Er 3+ , Yb 3+ Report on Upconversion Luminescent Nanofibers

Method used

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  • Preparation method for erbium and ytterbium double-doped up-conversion luminescence nano-fiber
  • Preparation method for erbium and ytterbium double-doped up-conversion luminescence nano-fiber
  • Preparation method for erbium and ytterbium double-doped up-conversion luminescence nano-fiber

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Embodiment

[0025] Embodiment: take a certain amount of lithium hydroxide monohydrate LiOH·H 2 O, yttrium oxide Y 2 o 3 , erbium oxide Er 2 o 3 and ytterbium oxide Yb 2 o 3 , where Li + , Y 3+ , Er 3+ and Yb 3+ The molar ratio is 100:79:1:20, that is, the erbium ion Er 3+ and ytterbium ion Yb 3+ The mole percentages are 1% and 20% with HNO 3 Dissolved and then evaporated to give LiNO 3 , Y(NO 3 ) 3 , Er(NO 3 ) 3 and Yb(NO 3 ) 3 Mix the crystals, add an appropriate amount of N,N-dimethylformamide DMF solvent and polyvinylpyrrolidone PVP, stir magnetically at room temperature for 6 hours, and let it stand for 4 hours to form a spinning solution. The mass of each component of the spinning solution is The percentages are: 5% nitrate content, 13% PVP content, and 82% solvent DMF content; the prepared spinning solution is added to the liquid storage pipe of the spinning device for electrospinning, and the inner diameter of the nozzle is 0.7mm. The angle between the horizontal...

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Abstract

The invention relates to a preparation method for an erbium and ytterbium double-doped up-conversion luminescence nano-fiber and belongs to the field of nano-material preparation, comprising the steps of (1) preparing a spinning solution; (2) preparing a PVP / metal nitrate composite fiber using a static spinning technique; (3) preparing a mixed oxide nano-fiber; and (4) preparing a LiYF4:Er3+, Yb3+ up-conversion luminescence nano-fiber. Fluorination of the mixed oxide nano-fiber with ammonium bifluoride by a double-crucible method is performed, and the LiYF4:Er3+, Yb3+ up-conversion luminescence nano-fiber having a diameter of 202.7+ / -21.7nm and a length greater than 50 [mu]m with good crystallinity is obtained. The up-conversion luminescence nano-fiber is a nano luminescent material having significant application value. The preparation method is simple to operate and suitable for mass production, having a broad application prospect.

Description

technical field [0001] The invention relates to the research field of preparation of nanometer materials, in particular to a method for preparing erbium-ytterbium double-doped tetrafluoroyttrium-lithium up-conversion luminescent 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. In the prior ar...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F11/00D01D5/00
Inventor 董相廷于飞于文生王进贤刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH
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