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Preparation method of europium-doped Y4Al2O9 red light-emitting nanobelt

A technology of red luminescence, y4al2o9, applied in the field of preparation of europium-doped Y4Al2O9 red luminescent nanobelt

Inactive Publication Date: 2012-07-25
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no preparation of Y by electrospinning technology. 4 al 2 o 9 :Eu 3+ Nanobelt reports

Method used

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  • Preparation method of europium-doped Y4Al2O9 red light-emitting nanobelt
  • Preparation method of europium-doped Y4Al2O9 red light-emitting nanobelt
  • Preparation method of europium-doped Y4Al2O9 red light-emitting nanobelt

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Embodiment

[0021] Embodiment: take a certain amount of yttrium oxide Y 2 o 3 and europium oxide Eu 2 o 3 , the molar ratio of the two is 95:5, that is, the molar percentage of europium ions is 5%, and dilute nitric acid HNO 3 Dissolved and evaporated to give Y(NO 3 ) 3 and Eu(NO 3 ) 3 Mix crystals, add aluminum nitrate nonahydrate Al(NO 3 ) 3 9H 2 O, make Y 3+ +Eu 3+ with Al 3+ The molar ratio is 2:1, then 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 3 hours to form a spinning solution. The mass percentages of the components of the liquid are: 10% nitrate content, 23% PVP content, and 67% solvent DMF content; the prepared spinning liquid is added to the liquid storage pipe of the spinning device for electrospinning, and the inner diameter of the nozzle is 0.7mm, adjust the nozzle to be vertical to the horizontal plane, apply a DC voltage of 10kV, cure dista...

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Abstract

The invention relates to a preparation method of an europium-doped Y4Al2O9 red light-emitting nanobelt, belonging to the technical field of nanometer material preparation. Y4Al2O9:Eu<3+> micro-particles or nano-particles are prepared in the prior art. According to the preparation method disclosed by the invention, an Y4Al2O9:5%Eu<3+> nanobelt is prepared by adopting an electro-spinning technology. The preparation method comprises the three steps of: (1) preparation of a spinning solution, to be specific, weighing Y2O3 and Eu2O3, dissolving the Y2O3 and the Eu2O3 by using diluted HNO3 and then vaporizing to obtain Y(NO3)3 and Eu(NO3)3 mixed crystals, adding Al(NO3)3.9H2O, a DMF solvent and PVP (Polyvinylpyrrolidone) to obtain the spinning solution; (2) preparing an original PVP / [Y(NO3)+Eu(NO3)3+Al(NO3)3] composite nanobelt by adopting an electro-spinning technique; and (3) preparation of a Y4Al2O9:5%Eu<3+> nanobelt, to be specific, performing a heat treatment on the original PVP / [Y(NO3)+Eu(NO3)3+Al(NO3)3] composite nanobelt to obtain the Y4Al2O9:5%Eu<3+> nanobelt which is good in crystallinity, 0.4-1.1 mum in width, 89 nm in thickness and more than 50 mum in length. The Y4Al2O9:Eu<3+> nanobelt is an important novel red nanometer light-emitting material and can play an important role in the fields, such as light emission and display, anti-counterfeiting, biological markers and nanometer devices. The preparation method disclosed by the invention has the advantages of being simple and practical, being capable of producing in batches and having wide application prospect.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a europium-doped Y 4 al 2 o 9 Preparation method of red luminescent nanobelt. 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] Europium-doped Yttrium Aluminate Y 4 al 2 o 9 :Eu 3+ It is an important red fluorescent material. Currently, Y 4 al ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01F11/00D01D5/00D01D1/02B82Y40/00C09K11/80
Inventor 董相廷秦菲王进贤于文生刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH