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Method for preparing functional magnetic nano composite material

A magnetic nano-composite material technology, applied in chemical instruments and methods, alkali metal compounds, inorganic chemistry, etc., can solve the problems of serious agglomeration, easy oxidation of particles, and reduced reactivity, and achieve uniform particle size distribution and particle size distribution. Uniform, simple-to-equip effect

Inactive Publication Date: 2019-11-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For magnetic nano-Fe 3 o 4 Particles have strong polymerization characteristics and are easy to agglomerate, with the presence of na

Method used

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  • Method for preparing functional magnetic nano composite material
  • Method for preparing functional magnetic nano composite material
  • Method for preparing functional magnetic nano composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Under ultrasonic conditions (40KHz, 150W), to pass N 2 In the protected 250mL three-necked flask, FeSO was added in a molar ratio of 2:3. 4 ·7H 2 O 1.39g and FeCl 3 ·6H 2 Mix 2.03g of O with 100mL of oxygen-free deionized water, slowly drop into 1.0mol / L freshly prepared ammonia solution until the pH of the solution is 11, and stir for 1h in a water bath at 50°C. After the reaction was completed, it was washed with anaerobic deionized water (50mL×3), and vacuum-dried at 60°C for 12h to obtain magnetic nano-Fe 3 o 4 particles. Under ultrasonic condition (40KHz, 150W), take by weighing 0.5g (2.16mmol) the magnetic nanometer Fe that above-mentioned steps prepares 3 o 4 , 0.108g (1mmol) m-phenylenediamine monomer (mPD) and 0.188g (1mmol) 2,5-diaminobenzenesulfonic acid monomer (SP) were mixed in a 250mL three-neck flask, 100mL oxygen-free deionized water, and ultrasonically Disperse for 10min to obtain a solution; weigh 0.456g (2mmol) (NH 4 ) 2 S 2 o 8 Dissolve ...

Embodiment 2

[0059] Under ultrasonic conditions (40KHz, 150W), to pass N 2 In the protected 250mL three-necked flask, FeSO was added in a molar ratio of 2:3. 4 ·7H 2 O 1.39g and FeCl 3 ·6H 2 Mix 2.03g of O with 100mL of oxygen-free deionized water, slowly drop into 1.0mol / L freshly prepared ammonia solution until the pH of the solution is 11, and stir for 1h in a water bath at 50°C. After the reaction was completed, it was washed with anaerobic deionized water (50mL×3), and vacuum-dried at 60°C for 12h to obtain magnetic nano-Fe 3 o 4 particles. Under ultrasonic condition (40KHz, 150W), take by weighing 0.6g (2.59mmol) the magnetic nanometer Fe that above-mentioned steps prepares 3 o 4 , 0.108g (1mmol) m-phenylenediamine monomer (mPD) and 0.188g (1mmol) 2,5-diaminobenzenesulfonic acid monomer (SP) were mixed in a 250mL three-neck flask, 100mL oxygen-free deionized water, and ultrasonically Disperse for 10min to obtain a solution; weigh 0.456g (2mmol) (NH 4 ) 2 S 2 o 8 Dissolve ...

Embodiment 3

[0067] Under ultrasonic conditions (40KHz, 150W), to pass N 2 In the protected 250mL three-necked flask, FeSO was added in a molar ratio of 2:3. 4 ·7H 2 O 1.39g and FeCl 3 ·6H 2 Mix 2.03g of O with 100mL of oxygen-free deionized water, slowly drop into 1.0mol / L freshly prepared ammonia solution until the pH of the solution is 11, and stir for 1h in a water bath at 50°C. After the reaction was completed, it was washed with anaerobic deionized water (50mL×3), and vacuum-dried at 60°C for 12h to obtain magnetic nano-Fe 3 o 4 particles. Under ultrasonic condition (40KHz, 150W), take by weighing 0.5g (2.16mmol) the magnetic nanometer Fe that above-mentioned steps prepares 3 o 4 , 0.108g (1mmol) m-phenylenediamine monomer (mPD) and 0.188g (1mmol) 2,5-diaminobenzenesulfonic acid monomer (SP) were mixed in a 250mL three-neck flask, 100mL oxygen-free deionized water, and ultrasonically Disperse for 10min to obtain a solution; weigh 0.684g (3mmol) (NH 4 ) 2 S 2 o 8 Dissolve ...

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Abstract

The invention discloses a method for preparing a functional magnetic nano composite material. The method comprises the following steps: under conditions of ultrasonic radiation and continuous stirringand nitrogen introduction, slowly dropping a newly prepared ammonium hydroxide solution into a mixed solution of a soluble ferrous salt and a soluble iron salt so as to obtain magnetic nano Fe3O4 granules; and under ultrasonic radiation, mixing and dissolving the newly prepared magnetic nano Fe3O4 granules with a m-phenylenediamine monomer and a 2,5-diaminobenzene sulfonic acid monomer, performing uniform stirring, and synthesizing a functionalized magnetic nano composite material Fe3O4-mPD/SP (50:50) which has a small particle size, a large specific surface area and high reaction activity and is modified by amino groups, imino groups and sulfonic acid groups by using a chemical oxidation method at one step. The method is simple in equipment, convenient in operation and uniform in productparticle size distribution, the particle size range is about 20-100nm, and the functionalized magnetic nano composite material has a specific surface area of 80-150m<2>/g, and is free of a conspicuous nano granule oxidation phenomenon.

Description

[0001] (1) Technical field [0002] The invention relates to a functionalized magnetic nanocomposite Fe 3 o 4 - the preparation method of mPD / SP (50:50), in the composite material, the molar ratio of m-phenylenediamine monomer (mPD) and 2,5-diaminobenzenesulfonic acid monomer (SP) is 50:50 . [0003] (2) Background technology [0004] At present, the methods for removing heavy metal ions in water at home and abroad mainly include chemical precipitation, membrane separation, electrolysis, ion exchange, biological methods, and adsorption methods. Adsorption is widely used for its advantages of high efficiency, economy and simplicity. Traditional adsorbents such as activated carbon, zeolite, and molecular sieve are based on the large specific surface area and high surface energy of the adsorbent to remove heavy metals in water through physical adsorption (Wang Jingyu, Liu Jingyong, Pei Yuanyuan. Adsorbents are used in the treatment of heavy metals in industrial wastewater Appl...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/0229B01J20/22B01J20/28007B01J20/28009C02F1/288C02F2101/20
Inventor 赵德明杨鑫宇张建庭吴纯鑫
Owner ZHEJIANG UNIV OF TECH
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