Erbium doped yttrium trifluoride upconversion luminescence hollow nanometer fiber preparation method

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

Inactive Publication Date: 2013-02-27
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+ Report on Upconversion Luminescent Hollow Nanofibers

Method used

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  • Erbium doped yttrium trifluoride upconversion luminescence hollow nanometer fiber preparation method
  • Erbium doped yttrium trifluoride upconversion luminescence hollow nanometer fiber preparation method
  • Erbium doped yttrium trifluoride upconversion luminescence hollow nanometer fiber preparation method

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Experimental program
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Embodiment

[0026] Embodiment: take a certain amount of yttrium oxide Y 2 o 3 and erbium oxide Er 2 o 3 , where Y 3+ and Er 3+ The molar ratio of erbium ions is 95:5, that is, the molar percentage of erbium ions is 5%. 3 Dissolved and evaporated to give Y(NO 3 ) 3 and Er(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 percentages of each component in the spinning solution are: nitrate content 12%, PVP content 39%, solvent The DMF content is 49%; the uniaxial electrospinning technology is adopted, and the spinneret adopts a truncated 10# stainless steel injection needle with an outer diameter of 1.0mm and an inner diameter of 0.7mm, and the prepared spinning solution is placed in the spinning device In the liquid storage pipe, the vertical spraying method is adopted, the spinneret is perpendicular to the horizontal plane, the DC voltage is adjusted to 16kV, the curing dis...

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Abstract

The present invention relates to an erbium doped yttrium trifluoride upconversion luminescence hollow nanometer fiber preparation method, and belongs to the technical field of nanometer material preparation. The preparation method comprises the following four steps: (1) preparing a spinning solution; (2) adopting a uniaxial electrospinning technology to prepare PVP/[Y(NO3)3+Er(NO3)3] original composite fibers; (3) preparing Y2O3:Er<3+> hollow nanometer fibers, wherein the Y2O3:Er<3+> hollow nanometer fibers are obtained by carrying out a heat treatment on the original composite fibers; and (4) preparing YF3:Er<3+> hollow nanometer fibers, wherein a dual crucible method is adopted, ammonium bifluoride is adopted to carry out a fluorination treatment on the Y2O3:Er<3+> hollow nanometer fibers to obtain the YF3:Er<3+> hollow nanometer fibers, and the YF3:Er<3+> hollow nanometer fibers have excellent crystallinity, a diameter of 149-195 nm and a length of more than 30 mum. The hollow nanometer fibers are an important upconversion luminescence material. In addition, the preparation method has characteristics of simpleness, 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 erbium-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 have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01F11/00D01D5/00C09K11/85B82Y40/00
Inventor 董相廷李丹于文生王进贤刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH
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