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Organically-coated magnetic nano adsorber and preparation method and application thereof

A magnetic nanometer and magnetic nanoparticle technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, inorganic chemistry, etc., can solve the problems of no magnetic adsorbent, etc., and achieve the improvement of adsorption capacity, selectivity, and enrichment multiple Large, good stability effect

Inactive Publication Date: 2015-04-22
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the synthesis of polyethylene glycol methacrylate and 4-vinylpyridine copolymerized magnetic adsorbent by dispersion polymerization

Method used

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  • Organically-coated magnetic nano adsorber and preparation method and application thereof
  • Organically-coated magnetic nano adsorber and preparation method and application thereof
  • Organically-coated magnetic nano adsorber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of Organically Encapsulated Magnetic Nanosorbents

[0025] (1) Preparation of magnetic core: quickly and accurately weigh 2.0 g FeCl 3 ·6H 2 O was dissolved in 60 mL of ethylene glycol, and 5.0 g of anhydrous sodium acetate was added and mixed in a beaker. Stir the mixed solution with a magnetic stirrer, move it into a water bath environment at 50°C, and continue to stir vigorously for 20 minutes until the solute is completely dissolved to form a uniform orange solution. Seal the solution in a 100 mL polytetrafluoroethylene reactor and lock it with a stainless steel jacket. Tight, placed in a 190 ° C reaction furnace to heat the reaction for 6 hours. After taking it out, cool it to room temperature in the air, remove the reaction product, and wash it several times with absolute ethanol and deionized water respectively to remove residual substances. Dry in a vacuum oven at 50 °C for 24 h to obtain magnetic nanoparticles.

[0026] (2) Organically encapsula...

Embodiment 2

[0028] Preparation of Organically Encapsulated Magnetic Nanosorbents

[0029] (1) Preparation of magnetic core: quickly and accurately weigh 2.5 g FeCl 3 ·6H 2 O was dissolved in 70 mL of ethylene glycol, and 6.0 g of anhydrous sodium acetate was added and mixed in a beaker. The mixed solution was stirred with a magnetic stirrer, and moved into a 60°C water bath environment, and continued to stir vigorously for 30 min until the solute was completely dissolved to form a uniform orange solution. The solution was sealed in a 100 mL polytetrafluoroethylene reaction kettle with a stainless steel jacket Lock it tightly and place it in a reaction furnace at 210°C for 10 h. After taking it out, cool it to room temperature in the air, remove the reaction product, and wash it several times with absolute ethanol and deionized water respectively to remove residual substances. Dry in a vacuum oven at 50 °C for 24 h to obtain magnetic nanoparticles.

[0030] (2) Organically encapsulated...

Embodiment 3

[0032] Preparation of Organically Encapsulated Magnetic Nanosorbents

[0033] (1) Preparation of magnetic core: quickly and accurately weigh 2.2g FeCl 3 ·6H 2 O was dissolved in 65 mL of ethylene glycol, and 5.5 g of anhydrous sodium acetate was added to the beaker and mixed. The mixed solution was stirred with a magnetic stirrer, and moved into a water bath environment at 55°C, and continued to stir vigorously for 25 minutes until the solute was completely dissolved to form a uniform orange solution. Seal the solution in a 100 mL polytetrafluoroethylene reaction kettle and lock it with a stainless steel jacket Tight, placed in a 200 ° C reaction furnace to heat the reaction for 8 hours. After taking it out, cool it to room temperature in the air, remove the reaction product, and wash it several times with absolute ethanol and deionized water respectively to remove residual substances. Dry in a vacuum oven at 50 °C for 24 h to obtain magnetic nanoparticles.

[0034] (2) Or...

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PUM

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Abstract

The invention discloses an organically-coated magnetic nano adsorber and a preparation method and application thereof, and belongs to the field of adsorbing material preparation. The dispersion polymerization method is adopted, polyethylene glycol metacrylic acid ester and 4-vinyl pyridine are used as monomers, ferriferous oxide is used as a magnetic nucleus, a functional group is introduced under the effect of the cross-linking agent, pentaerythritol triacrylate, and a solid-phase extracted material is obtained through synthesis. The particle size distribution of the adsorber is uniform, the crystal crystallinity is good, and the adsorber has good adsorptive property and is firm in bonding, stable in property, good in reproducibility, large in enrichment multiple, capable of being applied within a wide pH range, and suitable for enrichment preprocessing of tract Cu (II) in an environmental water sample.

Description

technical field [0001] The invention belongs to the field of adsorption material preparation, and in particular relates to an organic-wrapped magnetic nano-adsorbent and its preparation method and application. Background technique [0002] With the development of industry, a large amount of industrial wastewater containing heavy metal ions is produced. However, a large amount of sewage is directly discharged into the water without necessary treatment, which will cause great harm to the ecological environment. At present, the detection methods of metallic copper include flame atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry and graphite furnace atomic absorption spectrometry. FAAS has been widely used due to the advantages of simple operation, fast analysis speed and wide application range in analysis. However, in practice, the concentration of metal cadmium in environmental samples is extremely low and its composition is complex, so i...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C08F290/06C08F226/06C02F1/28
CPCB01J20/26B01J20/28009C02F1/285C02F2101/20C08F290/062C08F226/06
Inventor 吕海霞王晓明谢增鸿
Owner FUZHOU UNIVERSITY
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