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Preparation method of ion chelating agent containing polydopamine and obtained product

A technology of ion chelating agent and polydopamine, which is applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of little synthesis significance and a large amount of waste solvents, and achieve simple separation and operation Easy operation, convenient adsorption operation, high environmental protection effect

Pending Publication Date: 2021-06-04
SHANDONG TIANYU WALL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reaction will produce a large amount of waste solvent, which is of little significance for practical synthesis

Method used

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  • Preparation method of ion chelating agent containing polydopamine and obtained product
  • Preparation method of ion chelating agent containing polydopamine and obtained product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Disperse 1 g of ferric oxide microspheres with a particle size of 500 nm in 100 mL of deionized water, add 0.5 g of ascorbic acid, and heat to reflux for 3 h. After the reaction, the product was separated with a strong magnet, washed three times with 20 mL of deionized water, and dried in vacuum to obtain ascorbic acid-modified Fe 3 o 4 @AA microspheres.

[0032] 2. Add 1g of the above-prepared Fe 3 o 4 @AA microspheres were uniformly dispersed in 1000 mL deionized water, 0.5 g dopamine was added, ultrasonically dispersed for 1 h, and 1000 mL PBS buffer solution (pH 7.4) was added to react for 3 h. After the reaction, the product was separated with a high-strength magnet, washed alternately with deionized water and ethanol three times (20 mL / time), and vacuum-dried to obtain Fe 3 o 4 @AAPDA microspheres.

[0033] 3. Add 1g Fe 3 o 4 @AAPDA microspheres were dispersed in 10 mL of 1 mol / L NaOH aqueous solution, and 1 g of carbon disulfide was slowly added dropwi...

Embodiment 2

[0035] 1. Evenly disperse 2 g of ferric oxide microspheres with a particle size of 100 nm in 150 mL of deionized water, add 1.5 g of ascorbic acid, and heat to reflux for 5 h. After the reaction, the product was separated with a strong magnet, washed three times with 20 mL of deionized water, and dried in vacuum to obtain ascorbic acid-modified Fe 3 o 4 @AA.

[0036] 2. Add 1 g of the above-prepared Fe 3 o 4 @AA microspheres were uniformly dispersed in 1100 mL deionized water, 1 g dopamine was added, ultrasonically dispersed for 1 h, and 1100 mL PBS buffer solution (pH 7.4) was added to react for 3 h. After the reaction, the product was separated with a high-strength magnet, washed alternately with deionized water and ethanol three times (20 mL / time), and vacuum-dried to obtain Fe 3 o 4 @AAPDA microspheres.

[0037] 3. Add 1g Fe 3 o 4 @AAPDA microspheres were dispersed in 5 mL of 2 mol / L NaOH aqueous solution, and 1 g of carbon disulfide was slowly added dropwise. Afte...

Embodiment 3

[0039] 1. Disperse 1 g of ferric oxide microspheres with a particle size of 50 nm in 100 mL of deionized water, add 1 g of ascorbic acid, and heat to reflux for 4 h. After the reaction, the product was separated with a strong magnet, washed three times with 20 mL of deionized water, and dried in vacuum to obtain ascorbic acid-modified Fe 3 o 4 @AA microspheres.

[0040] 2. Add 1g of the above-prepared Fe 3 o 4 @AA microspheres were uniformly dispersed in 1500 mL deionized water, 1 g dopamine was added, ultrasonically dispersed for 1 h, and 1500 mL PBS buffer solution (pH 7.4) was added to react for 3 h. After the reaction, the product was separated with a high-strength magnet, washed alternately with deionized water and ethanol three times (20 mL / time), and vacuum-dried to obtain Fe 3 o 4 @AAPDA microspheres.

[0041] 3. Add 1g Fe 3 o 4 @AAPDA microspheres were dispersed in 8 mL of 1 mol / L NaOH aqueous solution, and 1 g of carbon disulfide was slowly added dropwise. Af...

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Abstract

The invention discloses a preparation method of an ion chelating agent containing polydopamine and an obtained product. The method comprises the following steps: taking magnetic ferroferric oxide microspheres as a core material, and forming a polymer core-shell structure through surface modification and dopamine monomer polymerization; and introducing dithiocarbamate with strong heavy metal ion adsorption and chelation performance into the magnetic core-shell microsphere polymer. The obtained ion chelating agent has magnetism and strong adsorption action chelating sites, is high in adsorption capacity, good in acid / alkali resistance, convenient to operate and good in heavy metal ion separation effect, can achieve rapid treatment in the field of heavy metal ion pollution, and has huge application potential.

Description

technical field [0001] The present invention relates to a preparation method and the obtained product of an ion chelating agent containing polydopamine, and also relates to the application of the ion chelating agent containing polydopamine in removing heavy metal ions in sewage. Background technique [0002] Heavy metal wastewater mainly comes from ore processing, building materials processing, electroplating, machinery manufacturing, metal and steel smelting, and some chemical production industries. It generally contains copper, lead, nickel, mercury, etc., and it is particularly important to remove heavy metals. [0003] At present, there are three main types of heavy metal wastewater treatment methods in the world: the first type is the removal of heavy metal ions in wastewater through chemical reactions, including neutralization precipitation method, sulfide precipitation method, ferrite co-precipitation method, chemical reduction method, electrochemical method, etc. Red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C08G73/06C02F101/20
CPCB01J20/262B01J20/06B01J20/223B01J20/28009C02F1/285C08G73/0672C02F2101/20
Inventor 韩庆贺张雷王喜徐远宏
Owner SHANDONG TIANYU WALL MATERIAL
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