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A kind of preparation method of magnetic fluorescent composite material

A composite material and fluorescent technology, which is applied in the direction of luminescent materials, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problems of unsatisfactory magnetic and fluorescent properties of nanoparticles, and achieve good optical properties. Catalytic degradation, high yield, and good fluorescence performance

Active Publication Date: 2018-09-21
LIAONING UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also fluorescent magnetic nanoparticles prepared by growing or assembling different nanocrystals. The magnetic and fluorescent properties of the nanoparticles prepared by this method are not ideal, and this method requires only the proper ratio of magnetic and fluorescent materials to achieve the best performance. Magnetic and fluorescent effects

Method used

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  • A kind of preparation method of magnetic fluorescent composite material
  • A kind of preparation method of magnetic fluorescent composite material
  • A kind of preparation method of magnetic fluorescent composite material

Examples

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Embodiment 1

[0035] (1) The preparation method is as follows:

[0036] 1. Weigh 4.06g FeCl 3 ·6H 2 O and 2.78 g FeCl 2 4H 2 O dissolved in deionized water, N 2 Protect, heat up to 80°C with mechanical stirring, add 5 mL of acetone dissolved in oleic acid (oleic acid: acetone = 0.1 g: 5 mL), then add concentrated ammonia water dropwise, adjust the pH to 10-12, react for 30 minutes, and cool to room temperature. In the product, the hydrochloric acid solution of 2mol / L is added dropwise to obtain precipitate, and precipitate is washed with acetone, and then precipitate is redispersed in the dilute ammonia solution 35mL that contains a small amount of oleic acid (oleic acid: 9% ammoniacal liquor=1.0g: 35mL ), at N 2 Under protection, stir and heat to 80°C, and continue the reaction for 30min to obtain Fe 3 o 4 ferrofluid, the resulting Fe 3 o 4 Ferrofluid in N 2 Store under protection for later use.

[0037] 2. Add 5mL methyl methacrylate (MMA) and 100mL deionized water into a four-...

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Abstract

The invention relates to a preparation method of a magnetic fluorescent composite material. First, through a coprecipitation method, oleic acid-modified Fe3O4 magnetic fluid is prepared; then, with methyl methacrylate being a monomer, Fe3O4@PMMA emulsion is prepared as a seed solution through a soap-free emulsion polymerization method; then, with N-vinyl pyrrolidone and styrene being monomers and divinyl benzene being a crosslinking agent, an Fe3O4@PMMA@P(St-NVP) magnetic microsphere with a core-shell structure is prepared through an emulsion polymerization method; finally, the magnetic fluorescent composite material Fe3O4@PMMA@P(St-NVP)@ZnS is prepared under complexing action and through a thermal decomposition method of thiourea. The obtained magnetic fluorescent composite material can be used for photocatalytic degradation on methylene blue. The steps of the method are easy and convenient to implement, operation is easy, and the obtained magnetic fluorescent composite particles has no fluorescence quenching.

Description

technical field [0001] The invention relates to a preparation method of a magnetic fluorescent composite material. Background technique [0002] Magnetic fluorescent material is a kind of functional material that has been used for a long time and is very extensive. It is used in various fields such as biomedicine, magnetic conduction and materials with its excellent performance. At present, there are many methods for preparing magnetic fluorescent composite particles, such as using chemical bonding to connect quantum dots and magnetic nanoparticles to form magnetic fluorescent composite nanoparticles. The group is activated to finally prepare composite nanoparticles with controllable particle size and less attenuation of magnetization and fluorescence intensity. There are also fluorescent magnetic nanoparticles prepared by growing or assembling different nanocrystals. The magnetic and fluorescent properties of the nanoparticles prepared by this method are not ideal, and thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08K3/30C08K3/22C08F265/06C08F226/10C08F212/08C08F212/36C08F120/14C08F2/44C08F2/22C09K11/02C09K11/56B01J31/28
CPCB01J31/28B01J35/004B01J35/026C08F2/22C08F2/44C08F120/14C08F265/06C08K3/22C08K3/30C08K2003/2275C08K2003/3036C08L2207/53C09K11/025C09K11/565C08F212/08C08L51/003
Inventor 关宏宇王登科王杰张向东葛春华
Owner LIAONING UNIVERSITY
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