A kind of extraction agent functionalized magnetic nano-adsorption material and its preparation method and application

A magnetic nano and adsorption material technology, applied in chemical instruments and methods, selective adsorption, inorganic chemistry, etc., can solve the problems of containing side reactions and the reaction is not easy to carry out, achieve less side reactions, overcome the difficulties of surface modification, improve The effect of preparation efficiency

Active Publication Date: 2021-12-03
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For the deficiencies in the prior art, the object of the present invention is to provide a kind of extractant functionalized magnetic nano-adsorption material and preparation method and application, this magnetic nano-adsorption material aims at providing fast, efficient magnetic particle surface modification method, to overcome Many steps are required for chemical grafting modification, which not only contains side reactions, but also the reaction is not easy to carry out. At the same time, there are specific requirements for the functional groups of both grafting parties, so the scope of application is very limited; the magnetic nano-adsorption material is based on magnetic Nanoparticles are used as the matrix. Using the good coating performance of polyvinylpyrrolidone, the extractant can be fixed on the surface of magnetic nanoparticles by simple chemical methods, so that the magnetic nanoadsorption material has both adsorption capacity and magnetism. It can be used for When adsorbing and separating rare earth ions, it can effectively improve the solid-liquid separation efficiency after adsorption equilibrium

Method used

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  • A kind of extraction agent functionalized magnetic nano-adsorption material and its preparation method and application
  • A kind of extraction agent functionalized magnetic nano-adsorption material and its preparation method and application

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Embodiment 1

[0038] This specific embodiment is to prepare the extractant functionalized magnetic nano-adsorption material, and the specific process is:

[0039] (1) Accurately weigh 5g of nano-iron ferric oxide, place it in 50ml of hydrochloric acid solution with pH=4, stir it ultrasonically for 10 minutes, discard the supernatant after standing for 15 minutes, and dry at 105°C to obtain activated nano-ferric oxide Ferric oxide.

[0040] (2) Accurately weigh 0.3g of polyvinylpyrrolidone (PVP) and dissolve it in 4ml of ethanol solution, then add 0.2g of 2-ethylhexylphosphonic acid mono(2-ethylhexyl) ester (P507), 0.5 g of the above-mentioned activated ferric iron tetroxide was stirred thoroughly and ultrasonically treated to obtain a mixed system.

[0041] (3) Put the mixed system in (2) above in a polytetrafluoroethylene-lined reactor, and react at a constant temperature of 180°C for 300 minutes.

[0042] (4) Put the mixed system in (3) above into a beaker, dry it at 85° C., wash it sever...

Embodiment 2

[0046] This specific embodiment is also for preparing extractant functionalized magnetic nano-adsorption material, and the specific process is:

[0047] (1) Accurately weigh 5g of nano-iron ferric oxide, place it in 50ml of nitric acid solution with pH=5, stir it ultrasonically for 10 minutes, discard the supernatant after standing for 15 minutes, and dry at 105°C to obtain activated nano-ferric oxide Ferric oxide.

[0048] (2) Accurately weigh 0.3g of polyvinylpyrrolidone (PVP) and dissolve it in 4ml of ethanol solution, then add 0.1g of 2-ethylhexylphosphonic acid mono(2-ethylhexyl) ester (P507), 0.1g of bis(2,4,4'-trimethylpentyl)phosphonic acid (C272), 0.5g of the above-mentioned activated ferric oxide.

[0049] (3) Put the mixed system in (2) above in a polytetrafluoroethylene-lined reactor, and react at a constant temperature of 120°C for 250 minutes.

[0050] (4) Put the mixed system in (3) above into a beaker, dry it at 105° C., wash it several times with deionized w...

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Abstract

The invention discloses an extraction agent functionalized magnetic nano-adsorption material and its preparation method and application. The adsorption material uses magnetic nano-particles as a matrix, utilizes the good coating performance of polyvinylpyrrolidone, and extracts the extraction agent through a simple chemical method. Fixed on the surface of magnetic nanoparticles, so that the adsorption material has adsorption capacity and also has magnetism. When the adsorption material is used for adsorption and separation of rare earth ions, the solid-liquid separation efficiency after adsorption equilibrium can be effectively improved; in addition, the present invention The preparation method of the above-mentioned adsorption material also overcomes the disadvantage of difficult surface modification of the magnetic adsorption material. With the help of the film-forming property of polyvinylpyrrolidone, different types of extraction agents can be quickly and efficiently coated on the surface of the magnetic nanoparticles, which improves the surface of the magnetic nano-particles. The preparation efficiency of the adsorption material expands the optional range of the coated extractant and enriches the use of the adsorption material.

Description

technical field [0001] The invention belongs to the field of adsorption and separation of materials and rare earth ions, in particular to an extractant-functionalized magnetic nano-adsorption material, a preparation method and an application. Background technique [0002] With the development of science and technology, the application research of solid adsorption materials in the hydrometallurgical industry is also deepening. Compared with the traditional solvation extraction, the solid-liquid adsorption technology can directly contact the adsorption materials with the aqueous phase material liquid, avoiding the The use of a large amount of volatile organic solvents is more in line with the concept of green and sustainable development. Solid adsorption materials often have the characteristics of large specific surface area and good dispersibility, so that the extractant molecules and metal ions can be more fully contacted, thereby improving the adsorption efficiency. Nanoma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D15/08
CPCB01D15/08B01J20/06B01J20/265B01J20/28009
Inventor 何学文邱森杨康伟张林翔
Owner JIANGXI UNIV OF SCI & TECH
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