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Method used for high efficiency adsorbing of heavy metals with functionalized magnetic material rich in thio amino groups

A technology that is rich in thioamine groups and adsorbs heavy metals. It is applied in chemical instruments and methods, alkali metal compounds, and adsorption of water/sewage treatment. It can solve the problems of few adsorption sites, low density of amino functional groups, adsorption capacity and adsorption Low rate and other problems, to achieve the effect of simple method, increased functional group density, fast and efficient adsorption

Active Publication Date: 2017-02-15
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the density of amine functional groups on the surface of the mesoporous magnetic particles prepared by the "one-step method" is small, that is, there are few adsorption sites, and the main problems are the low adsorption capacity and adsorption rate.

Method used

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  • Method used for high efficiency adsorbing of heavy metals with functionalized magnetic material rich in thio amino groups
  • Method used for high efficiency adsorbing of heavy metals with functionalized magnetic material rich in thio amino groups
  • Method used for high efficiency adsorbing of heavy metals with functionalized magnetic material rich in thio amino groups

Examples

Experimental program
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Effect test

Embodiment 1

[0026] a. Preparation of functionalized magnetic materials rich in thioamine groups

[0027] 1) Preparation of amine-terminated hyperbranched polymer: Dissolve 20.63g of diethylenetriamine in 25mL of methanol, then dropwise add 17.22g of methyl acrylate, react at room temperature for 10h, distill out the methanol in the system under reduced pressure, and then The reaction was continued at 60°C for 1 hour under vacuum, and the temperature of the oil bath was raised to 100-150°C for 8.5 hours. Add methanol to dissolve, and the reaction mixture is precipitated by ether, washed by suction filtration, and dried in vacuo to obtain a light yellow sticky solid;

[0028] 2) Preparation of amine-functionalized mesoporous magnetic material: 2.0 g of anhydrous FeCl 3 Dissolve 4.0 g of sodium acetate in 60 mL of ethylene glycol, stir and sonicate for about 1 h, and then add 20 mL of ethanolamine to react for 2.5 h under reflux at 40°C. The resulting mixture was reacted in an autoclave at...

Embodiment 2

[0034] a. Preparation of functionalized magnetic materials rich in thioamine groups

[0035] 1) Preparation of amine-terminated hyperbranched polymer: Dissolve 12.02g of ethylenediamine in 25mL of methanol, then dropwise add 17.22g of methyl acrylate, react at room temperature for 10h, distill out the methanol in the system under reduced pressure, and then vacuum The reaction was continued at 60°C for 1h, and the temperature of the oil bath was raised to 125°C for 8.5h. Add methanol to dissolve, and the reaction mixture is precipitated by ether, washed by suction filtration, and dried in vacuo to obtain a light yellow sticky solid;

[0036] 2) Preparation of amine-functionalized mesoporous magnetic material: 2.0 g of anhydrous FeCl 3 Dissolve 4.0 g of sodium acetate in 60 mL of ethylene glycol, stir and sonicate for about 1 h, and then add 20 mL of ethylenediamine to react for 2.5 h under reflux at 40°C. The resulting mixture was reacted in an autoclave at 200°C for 10 hours...

Embodiment 3

[0042] a. Preparation of functionalized magnetic materials rich in thioamine groups

[0043] 1) Preparation of amine-terminated hyperbranched polymer: Dissolve 29.29g of tetraethylenepentamine in 25mL of methanol, then dropwise add 22.83g of ethyl acrylate, react at room temperature for 10h, distill out the methanol in the system under reduced pressure, and then The reaction was continued at 60°C for 1 h under vacuum, and the temperature of the oil bath was raised to 125°C for 8.5 h. Add methanol to dissolve, and the reaction mixture is precipitated by ether, washed by suction filtration, and dried in vacuo to obtain a light yellow sticky solid;

[0044] 2) Preparation of amine-functionalized mesoporous magnetic material: 2.0 g of anhydrous FeCl 3 Dissolve 4.0 g of sodium acetate in 60 mL of ethylene glycol, stir and sonicate for about 1 h, and then add 20 mL of diethylenetriamine under reflux at 40°C for 2.5 h. The resulting mixture was reacted in an autoclave at 200°C for ...

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Abstract

The invention provides a method used for high efficiency adsorbing of heavy metals with a functionalized magnetic material rich in thio amino groups, relates to preparation of a thio amino functional group modified hyperbranched polymer magnetic material, belongs to the field of functional material and heavy metal adsorption, and more specifically relates to removing of Pb2+, Cu2+, Cd2+, and Hg2+ in aqueous solutions with a hyperbranched polymer functionalized magnetic compound material with terminal amino groups modified with sulfur-containing chelation groups via static adsorption. The terminal amino group hyperbranched polymer contains a high molecular weight polymer with a network ball similar three-dimensional structure which is capable of increasing the density of surface functional groups. Compared with linear polymers, the polymer with the hyperbranched structures possesses following advantages: molecular chain entanglement is not easily caused, solubility is high, viscosity is low, the molecular structure is spherical, the interior of the polymer is provided with a large amounts of cavities, and the molecular surfaces possess a large number of reaction active sites, so that it is benefit for introduction of certain chelation groups, and the polymer is capable of increasing adsorbing efficiency in application in adsorption field. The polymer is capable of removing heavy metal ions such as Pb2+, Cu2+, Cd2+, and Hg2+ in aqueous solutions completely; the adsorbing materials are widely available; cost is low; operation is simple; removing effect is achieved quickly; and efficiency, selectivity, and adsorption capacity are high.

Description

technical field [0001] The invention relates to the technical field of functional materials and heavy metal adsorption treatment, in particular to a method for efficiently adsorbing heavy metals by functionalized magnetic materials rich in thioamine groups. Background technique [0002] With the rapid development of global industrialization, water pollution by heavy metals has become a serious environmental problem because of their adverse effects on ecosystems and human health. Heavy metals such as copper, chromium, cadmium, lead, zinc, mercury, nickel or arsenic released into the environment by industries such as mining, metal surface treatment, painting, printing, pesticides, and fertilizers have serious consequences for nature or human activities. When these heavy metals enter the water environment, they are highly toxic, carcinogenic and mutagenic at low concentrations, which will lead to the death of a large number of fish and shrimp in the water; and because they are ...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/26B01J20/28B01J20/30C02F101/20
CPCB01J20/265B01J20/28009C02F1/288C02F2101/20
Inventor 王会才刘明强孙强陶忠安张报昌
Owner TIANJIN POLYTECHNIC UNIV
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