Magnetic up-conversion luminescence dual-functional coaxial composite nanofiber and preparation method thereof

A technology of composite nanofibers and nanofibers, which is applied in the fields of fiber treatment, spinning solution preparation, fiber chemical characteristics, etc.

Inactive Publication Date: 2013-07-31
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, no coaxial electrospinning technology has been used to prepare [Fe 3 o 4 /PVP][NaYF 4 :Yb 3+

Method used

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  • Magnetic up-conversion luminescence dual-functional coaxial composite nanofiber and preparation method thereof
  • Magnetic up-conversion luminescence dual-functional coaxial composite nanofiber and preparation method thereof
  • Magnetic up-conversion luminescence dual-functional coaxial composite nanofiber and preparation method thereof

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Embodiment Construction

[0032] The selected yttrium oxide Y of the present invention 2 o 3 , ytterbium oxide Yb 2 o 3 and erbium oxide Er 2 o 3 The purity is 99.99%, N,N-dimethylformamide DMF, chloroform CHCl 3 , ferric chloride hexahydrate, ferrous sulfate heptahydrate, ammonium nitrate, polyethylene glycol with a molecular weight of 20,000, argon, hydrochloric acid, ethylene glycol, oleic acid, sodium fluoride, with a molecular weight of 30,000 and 90,000 Polyvinylpyrrolidone PVP, absolute ethanol, ammonia NH 3 ·H 2 O is commercially available analytically pure product; the deionized water laboratory is self-made; the glass instruments and equipment used are the instruments and equipment commonly used in the laboratory.

[0033] Embodiment 5.4060g FeCl 3 ·6H 2 O, 2.7800g FeSO 4 ·7H 2 O, 4.04 g NH 4 NO 3 Dissolve 1.9g of polyethylene glycol with a molecular weight of 20,000 in 100mL of deionized water, heat to 50°C and pass through argon for 30 minutes, then slowly add ammonia water dro...

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Abstract

The invention relates to magnetic up-conversion luminescence dual-functional coaxial composite nanofiber and a preparation method thereof, and belongs to the technical field of nano material preparation. The preparation method comprises four steps as follows: 1), an Fe3O4 nanocrystalline material is prepared with a precipitation method; 2), an NaYF4: Yb3+, Er3+ nanocrystalline material is prepared with the precipitation method; 3), a spinning solution is prepared; and 4), an [Fe3O4/PVP]@[NaYF4: Yb3+, Er3+/PVP] magnetic up-conversion luminescence dual-functional coaxial composite nanofiber is prepared by using a coaxial electrospinning technique, the average diameter of the coaxial composite nanofiber is 390 nm, the core layer diameter is 130 nm, the casing thickness is 130 nm, and the length is larger than 100 mu m. The coaxial composite nanofiber which has magneto-optical dual functions and novel structure can have an important application prospect. The method is simple and feasible, batch production can be achieved, and a wide application prospect is provided.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a magnetic upconversion luminescence dual-function coaxial composite nanofiber and a preparation method thereof. Background technique [0002] The preparation and properties of one-dimensional nanostructured materials are one of the frontier hotspots in the field of material science research. Coaxial composite nanofibers have attracted great attention in recent years due to their unique properties, rich scientific connotations, broad application prospects, and important strategic positions in future nanostructured devices. [0003] The up-conversion luminescence process refers to the process in which materials absorb lower-energy photons and emit higher-energy photons. This special property of up-conversion materials makes them widely used in laser technology, optical fiber communication technology, fiber amplifiers, display technology and anti-counterfeiting. w...

Claims

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Application Information

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IPC IPC(8): D01D5/34D01D5/00D01D1/02D01F8/00
Inventor 董相廷马千里于文生王进贤刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH
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