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Method for preparing europium-doped yttrium lithium tetrafluoride (YLF) nanobelt

A technology of europium tetrafluoroyttrium lithium and nanobelts, which is applied in the field of preparing europium-doped yttrium tetrafluorolithium nanobelts

Inactive Publication Date: 2014-01-15
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 :Eu 3+ Report on Red Luminescent Nanoribbons

Method used

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  • Method for preparing europium-doped yttrium lithium tetrafluoride (YLF) nanobelt
  • Method for preparing europium-doped yttrium lithium tetrafluoride (YLF) nanobelt
  • Method for preparing europium-doped yttrium lithium tetrafluoride (YLF) nanobelt

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Embodiment

[0024] Embodiment: take a certain amount of lithium hydroxide monohydrate LiOH·H 2 O, yttrium oxide Y 2 o 3 and europium oxide Eu 2 o 3 , where Li + , Y 3+ and Eu 3+ The molar ratio of the europium ion is 100:95:5, that is, the molar percentage of europium ions is 5%. 3 Dissolved and then evaporated to give LiNO 3 , Y(NO 3 ) 3 and Eu(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 5 hours, and let stand for 3 hours to form a spinning solution. The mass of each component of the spinning solution is The percentages are: 10% nitrate content, 20% PVP content, and 70% solvent DMF content; add the prepared spinning solution into the liquid storage pipe of the spinning device for electrospinning, the inner diameter of the nozzle is 0.7mm, adjust the nozzle and The horizontal plane is vertical, a DC voltage of 6kV is applied, the curing distance is 18cm, the ro...

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Abstract

The invention relates to a method for preparing europium-doped yttrium lithium tetrafluoride (YLF) nanobelt, falling into the technical field of nanomaterial preparation. The method comprises the steps of preparing spinning solution; preparing PVP (polyvinyl pyrrolidone) / metal nitrate composite nanobelt by electrospinning method; preparing mixed oxide nanobelt; and preparing YLF:5%Eu<3+> nanobelt. The mixed oxide nanobelt is subjected to fluoride treatment with ammonium bifluoride by double-crucible method to obtain YLF:5%Eu<3+> red luminescent nanobelt, which has good crystallinity, width of 7.44+ / -1.27 micrometer, thickness of 180 nm and length of above 100 micrometer. The YLF:5%Eu<3+> nanobelt is a novel red luminescent nanomaterial with important application value. The method is simple and feasible, can realize mass production, and has wide 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 europium-doped tetrafluoroyttrium lithium nanobelts. Background technique [0002] The preparation and properties of inorganic nanoribbons are currently one of the frontier hotspots in materials science, condensed matter physics, chemistry and other disciplines. Nanoribbon is a kind of nanomaterial with ribbon structure synthesized by artificial method. Its cross section is a rectangular structure, its thickness is on the order of nanometers, its width can reach micron level, and its length can reach hundreds of microns, even several mm. Nanobelts have attracted great attention because of their novel structures different from tubes and wires, and their unique optical, electrical, and magnetic properties. [0003] Rare earth tetrafluoride is one of the current efficient rare earth ion-doped luminescent hosts due to its abundant 4f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D01F11/00D01D5/00D01D1/02B82Y40/00C09K11/85
Inventor 董相廷于飞王进贤于文生刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH