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Magnetic core-shell nano-microsphere for adsorbing phenolic pollutants as well as preparation method and application

A technology of nano-microspheres and pollutants, applied in water pollutants, adsorption water/sewage treatment, chemical instruments and methods, etc., can solve the problem of destroying the compatibility of magnetic nanoparticles and polymers, affecting the adsorption operation of magnetic adsorbents, etc. problem, to achieve the effect of improving compatibility, improving recovery efficiency and good stability

Active Publication Date: 2021-05-14
SHANDONG ACAD OF ENVIRONMENTAL SCI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of the prior art, the present invention provides magnetic core-shell nano-microspheres, preparation methods and applications for adsorbing phenolic pollutants, which solve the problem of existing magnetic porous adsorption The preparation process of the agent only modifies the magnetic nanoparticles once. If the magnetic adsorbent is adsorbed in a high temperature environment, the compatibility between the magnetic nanoparticles and the polymer will be destroyed, thereby affecting the adsorption operation of the magnetic adsorbent.

Method used

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  • Magnetic core-shell nano-microsphere for adsorbing phenolic pollutants as well as preparation method and application
  • Magnetic core-shell nano-microsphere for adsorbing phenolic pollutants as well as preparation method and application
  • Magnetic core-shell nano-microsphere for adsorbing phenolic pollutants as well as preparation method and application

Examples

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Comparison scheme
Effect test

Embodiment 1

[0068] The preparation method of magnetic core-shell nano-microspheres for adsorbing phenolic pollutants provided in this example specifically includes the following steps:

[0069] S1 Preparation of nano-iron powder

[0070] S1-1 takes the green tea leaves to dry and pulverize, then adds deionized water for heating reaction, and obtains the green tea extract after filtering. Specifically, in this embodiment, the tea leaves are pulverized to 200 mesh, and the weight ratio of green tea leaves to deionized water is 2: 30, the heating temperature is 60°C, the heating reaction time is 0.5h, and then the reaction solution is filtered to obtain the green tea extract;

[0071] S1-2 Add reaction additives to the green tea extract, that is, add C, Si, Mo, S and P in powder state, then mix with the aqueous solution of ferrous nitrate, stir and react at 20°C to obtain the reaction product;

[0072] Wherein, calculated in parts by weight, the weight of C, Si, Mo, S and P satisfies the fo...

Embodiment 2

[0085] The preparation method of magnetic core-shell nano-microspheres for adsorbing phenolic pollutants provided in this example specifically includes the following steps:

[0086] S1 Preparation of nano-iron powder

[0087] S1-1 takes the green tea leaves to dry and pulverize, then adds deionized water for heating reaction, and obtains the green tea extract after filtration. Specifically, in this embodiment, the tea leaves are pulverized to 300 mesh, and the weight ratio of green tea leaves to deionized water is 1: 10. The heating temperature is 70°C, the heating reaction time is 1h, and then the reaction solution is filtered to obtain the green tea extract;

[0088] S1-2 Add reaction additives to the green tea extract, that is, add C, Si, Mo, S and P in powder state, then mix with the aqueous solution of ferrous nitrate, stir and react at 20°C to obtain the reaction product;

[0089] Wherein, calculated in parts by weight, the weight of C, Si, Mo, S and P satisfies the fol...

Embodiment 3

[0102] The preparation method of magnetic core-shell nano-microspheres for adsorbing phenolic pollutants provided in this example specifically includes the following steps:

[0103] S1 Preparation of nano-iron powder

[0104]S1-1 takes the green tea leaves to dry and pulverize, then adds deionized water for heating reaction, and obtains the green tea extract after filtration. Specifically, in this embodiment, the tea leaves are pulverized to 500 mesh, and the weight ratio of green tea leaves to deionized water is 3: 20. The heating temperature is 65°C, the heating reaction time is 1.5h, and then the reaction solution is filtered to obtain the green tea extract;

[0105] S1-2 Add reaction additives to the green tea extract, that is, add C, Si, Mo, S and P in powder state, then mix with the aqueous solution of ferrous nitrate, stir and react at 20°C to obtain the reaction product;

[0106] Wherein, calculated in parts by weight, the weight of C, Si, Mo, S and P satisfies the fo...

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Abstract

The invention provides a magnetic core-shell nano-microsphere for adsorbing phenolic pollutants, a preparation method and application. The method comprises the following steps: preparing a nanoscale adsorption carrier; carrying out first modification on the nanoscale adsorption carrier to obtain a first modified adsorption carrier; performing secondary modification on the first modified adsorption carrier to obtain a second modified adsorption carrier; and carrying out polymerization reaction on the second modified adsorption carrier to obtain the magnetic core-shell nano-microsphere. The invention solves the problem that the adsorption operation of a magnetic adsorbent is influenced because the compatibility of magnetic nanoparticles and a polymer is destroyed if the magnetic adsorbent is subjected to adsorption operation in a high-temperature environment because only one-time modification is carried out on the magnetic nanoparticles in an existing preparation process of the magnetic porous adsorbent.

Description

technical field [0001] The invention belongs to the technical field of adsorption of phenolic pollutants, and in particular relates to magnetic core-shell nanometer microspheres for adsorbing phenolic pollutants, a preparation method and an application. Background technique [0002] Phenol and its derivatives are important chemical raw materials widely used in industries such as oil refining, papermaking, rubber, pesticide or pharmaceutical synthesis, and are relatively common highly toxic and refractory organic compounds. Phenolic pollutants are highly toxic and have certain toxic effects on living cells. When the concentration of phenolic pollutants in the water body is greater than 5mg / L, it may pose a threat to fish life or even die. When phenolic substances come into contact with the skin and mucous membranes, absorb them and invade the body through oral administration, they will cause damage, necrosis, and even systemic poisoning to human cells. The whole world attac...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/30B01J20/02B01J20/06C02F1/28C02F101/34
CPCB01J20/28009B01J20/28021B01J20/28007B01J20/3085B01J20/02B01J20/06C02F1/281C02F2101/345Y02W10/37
Inventor 于军李强康兴生马涛马广翔
Owner SHANDONG ACAD OF ENVIRONMENTAL SCI CO LTD
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