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Magnetic macromolecular adsorption material, preparation method and application

An adsorption material and polymer technology, applied in chemical instruments and methods, magnetic field/electric field water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve problems such as being unable to adapt to the broad spectrum adsorption of organic substances

Active Publication Date: 2018-05-08
NANJING UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the limitations of the adsorption of the magnetic materials prepared in the prior art and the inability to adapt to the defects of broad-spectrum adsorption of organic matter in water bodies, the present invention aims to provide a high magnetic material with good particle size uniformity, strong magnetism and strong adsorption. molecular adsorption material

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  • Magnetic macromolecular adsorption material, preparation method and application
  • Magnetic macromolecular adsorption material, preparation method and application
  • Magnetic macromolecular adsorption material, preparation method and application

Examples

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Embodiment 1

[0039] In this embodiment, the steps for preparing the magnetic polymer adsorption material are as follows:

[0040] (1), preparation of magnetic Fe 3 o 4 @oleic acid nanoparticles: Add 1g of ferrous chloride and 2g of ferric chloride, 100mL of water into a 250mL flask, stir and mix evenly, protect with nitrogen, then add 4mol / L sodium hydroxide solution at 60°C 20mL, oleic acid 0.75g, at this moment, the quality of described oleic acid is magnetic Fe 3 o 4 0.5 times that of nanoparticles. After reacting for 10 hours, adjust the pH value of the solution to 3, wash the product with water and ethanol for 5 times, and obtain the magnetic Fe after drying. 3 o 4 @oleic acid nanoparticles.

[0041] (2), preparation of oil phase solution: 2g magnetic Fe 3 o 4 @Oleic acid nanoparticles were dissolved in 30mL of toluene solution, respectively added 3g N-vinylpyrrolidone, 3g divinylbenzene, 0.05g AIBN, and mixed in an ice bath to obtain an oil phase solution. The mass of N-vinyl...

Embodiment 2

[0057] In this embodiment, the steps for preparing the magnetic polymer adsorption material are as follows:

[0058] (1), preparation of magnetic Fe 3 o 4 @oleic acid nanoparticles: Add 2.6g ferrous chloride and 6.4 ferric chloride, 200mL water into a 500mL flask, stir and mix evenly, protect with nitrogen, then add 2mol / L potassium hydroxide at 100°C Solution 40mL, oleic acid 4g, the quality of described oleic acid is magnetic Fe 3 o 4 2 times that of nanoparticles; after 6 hours of reaction, the pH value of the solution was adjusted to 3. The product was washed 5 times with water and methanol and dried to obtain the magnetic Fe 3 o 4 @oleic acid nanoparticles.

[0059] (2), preparation of oil phase solution: 1g magnetic Fe 3 o 4 @Oleic acid nanoparticles were dissolved in 10mL of cyclohexanol solution, 2g of N-vinylpyrrolidone, 1.5g of divinylbenzene, and 0.07g of AIBN were added respectively, and mixed evenly in an ice bath to obtain an oil phase solution. The mass...

Embodiment 3

[0063] In this embodiment, the steps for preparing the magnetic polymer adsorption material are as follows:

[0064] (1), preparation of magnetic Fe 3 o 4 @oleic acid nanoparticles: Add 1g of ferrous chloride and 7g of ferric chloride, 100mL of water into a 250mL flask, stir and mix evenly, protect with nitrogen, then add 20mL of saturated ammonia solution and 3g of oleic acid at a temperature of 70°C , the quality of the oleic acid is magnetic Fe 3 o 4 1.7 times that of nanoparticles; the pH value of the solution was adjusted to 3 after reacting for 0.5 hours. The product was washed with water and methanol for 5 times and dried to obtain the magnetic Fe 3 o 4 @oleic acid nanoparticles.

[0065] (2), preparation of oil phase solution: 2g magnetic Fe 3 o 4@Oleic acid nanoparticles were dissolved in 30mL of DMF solution, 3g of N-vinylpyrrolidone, 2g of divinylbenzene, and 0.1g of BPO were added respectively, and mixed in an ice bath to obtain an oil phase solution. The ...

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Abstract

The invention discloses a magnetic macromolecular adsorption material, a preparation method and application, and belongs to the field of the magnetic macromolecular materials. The preparation method of the magnetic macromolecular adsorption material includes the following steps that 1, magnetic nanoparticles are prepared; 2, the magnetic nanoparticles are dissolved in a pore-foaming agent, N-vinylpyrrolidone, divinylbenzene and an initiating agent are added separately and mixed with the magnetic nanoparticles to be uniform; 3, an emulsifying agent and a dispersing agent are added into a watersolution, part of an oil-phase solution prepared in the step 2 is added at 60 DEG C or below, the rest of the oil-phase solution is added when temperature is increased to 60 DEG C or above, stirring is conducted to carry out reaction, then, precipitation, filtration, washing and drying are conducted, and finally, the magnetic macromolecular adsorption material is obtained. The particle diameter ofthe magnetic macromolecular adsorption material is 2-100 micrometers, the magnetization intensity is 5-19.5 emu / g, the specific surface area is 210-950 m<2> / g, and the particle diameter of the magnetic macromolecular adsorption material can be applied to adsorbing inorganic and organic substances in solutions, controlling the inorganic and organic substances to be released and separating different substances.

Description

technical field [0001] The invention belongs to the field of polymer material preparation method and application thereof, and in particular relates to a magnetic polymer adsorption material, its preparation method and application. Background technique [0002] In recent years, magnetic polymer materials have shown great application potential in the pretreatment and adsorption removal of environmental pollutants due to their high adsorption capacity and good separation performance. At present, the magnetic polymer adsorption materials used in the environmental field are mainly divided into two categories, one is ion exchange type, and the other is ultra-high cross-linked materials with high specific surface area. [0003] After searching, the related application has been published in the prior art; Chinese Patent No. CN201010017687.1, the application whose publication date is 2012.07.04 discloses a preparation method of magnetic acrylic acid series strong base anion exchange ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30
CPCB01J20/26B01J20/28009B01J20/3085B01J20/28064B01J20/28021B01J20/06B01J20/28061B01J20/261B01J20/3064B01J20/3071B01J20/22B01J20/28004C02F2305/08C02F1/488C02F2101/305C02F2303/16C02F1/288C02F1/285C02F1/281C02F1/48C02F2101/10C02F2101/30
Inventor 周庆姚志建李爱民焦伟双陈冬李启蒙孙杰
Owner NANJING UNIV
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