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Preparation method and application of a pyrethroid pesticide magnetic molecularly imprinted polymer

A technology of magnetic molecular imprinting and polymers, applied in alkali metal compounds, chemical instruments and methods, water pollutants, etc., can solve the problems of poor treatment effect, poor selectivity, high treatment cost, etc., and achieve enhanced adsorption effect and continuous degree Low, good adsorption effect

Active Publication Date: 2018-04-10
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the poor selectivity to pollutants in the treatment method of pyrethroid pesticide wastewater in the prior art, the high treatment cost of conventional adsorption treatment method, and the technical deficiency of poor treatment effect, the present invention provides a kind of pyrethroid pesticide magnetic molecule Preparation method of imprinted polymer and application thereof, the method comprising polyethylene glycol-coated Fe 3 o 4 Preparation of magnetic liquid, preparation of monodisperse magnetic polymer microspheres, preparation of complex reaction solution between template molecules and sulfonic acid functional groups, and preparation of sulfonic acid functionalized magnetic molecularly imprinted polymers of cypermethrin in four steps, the prepared Magnetic molecularly imprinted polymer particles have strong specificity and specificity for pyrethroid pesticides, and are very suitable for the treatment of pyrethroid pesticide wastewater

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1 Preparation method of a magnetic molecularly imprinted polymer of pyrethroid pesticides

[0029] A method for preparing a pyrethroid pesticide magnetic molecularly imprinted polymer, which specifically includes the following steps:

[0030] 1) PEG-coated Fe 3 o 4 Preparation of magnetic liquid: Accurately weigh FeCl with a molar ratio of 2:1 3 ·6H 2 O and FeCl 2 4H 2 O, dissolved in 100mL deionized water, mechanically stirred for 10min to mix evenly, then added to excess polyethylene glycol 4000 solution, under the protection of nitrogen, quickly added concentrated ammonia water dropwise to pH = 9, in a 60°C water bath and vigorously stirred Under the conditions of reaction for 45min, the temperature was naturally lowered to room temperature, and then the reaction product was centrifuged, washed several times with deionized water to pH = 7 and washed with AgNO 3 Titrate the filtrate without white precipitate, and ultrasonically disperse the product into...

Embodiment 2

[0035] Example 2 Preparation method of a magnetic molecularly imprinted polymer of pyrethroid pesticides

[0036] A method for preparing a pyrethroid pesticide magnetic molecularly imprinted polymer, which specifically includes the following steps:

[0037] 1) PEG-coated Fe 3 o 4 Preparation of magnetic liquid: Accurately weigh FeCl with a molar ratio of 2:1 3 ·6H 2 O and FeCl 2 4H 2 O, dissolved in 100mL deionized water, mechanically stirred for 10min to mix well, then added to excess polyethylene glycol 4000 solution, under nitrogen protection, quickly added concentrated ammonia water dropwise to pH = 9, in 80°C water bath and vigorous stirring Under the conditions of reaction for 45min, the temperature was naturally lowered to room temperature, and then the reaction product was centrifuged, washed several times with deionized water to pH = 7 and washed with AgNO 3 Titrate the filtrate without white precipitate, and ultrasonically disperse the product into a certain a...

Embodiment 3

[0042] Example 3 Preparation method of a magnetic molecularly imprinted polymer for pyrethroid pesticides

[0043] A method for preparing a pyrethroid pesticide magnetic molecularly imprinted polymer, which specifically includes the following steps:

[0044] 1) PEG-coated Fe 3 o 4 Preparation of magnetic liquid: Accurately weigh FeCl with a molar ratio of 2:1 3 ·6H 2 O and FeCl 2 4H 2 O, dissolved in 100mL deionized water, mechanically stirred for 10min to mix well, then added to excess polyethylene glycol 4000 solution, under the protection of nitrogen, quickly added concentrated ammonia water dropwise to pH = 9, in a 70°C water bath and vigorously stirred Under the conditions of reaction for 45min, the temperature was naturally lowered to room temperature, and then the reaction product was centrifuged, washed several times with deionized water to pH = 7 and washed with AgNO 3 Titrate the filtrate without white precipitate, and ultrasonically disperse the product into ...

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PUM

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Abstract

The invention relates to a preparation method and application of a pyrethroid pesticide magnetic molecularly imprinted polymer, which belongs to the technical field of polymer material preparation. In order to overcome the technical deficiencies of poor selectivity of pollutants in the treatment of pyrethroid pesticide wastewater, high treatment cost and poor treatment effect in the prior art, the present invention provides a method for preparing a pyrethroid pesticide magnetic molecularly imprinted polymer and its Application, the method includes the preparation of polyethylene glycol-coated Fe3O4 magnetic liquid, the preparation of monodisperse magnetic polymer microspheres, the preparation of the composite reaction solution of template molecules and sulfonic acid functional groups, and the sulfonic acid functionalized magnetic properties of cypermethrin. The preparation of the molecularly imprinted polymer involves four steps, and the prepared magnetic molecularly imprinted polymer particles have strong specificity and specificity for pyrethroid pesticides, and are very suitable for the treatment of pyrethroid pesticide wastewater.

Description

technical field [0001] The invention relates to a preparation method and application of a pyrethroid pesticide magnetic molecularly imprinted polymer, which belongs to the technical field of polymer material preparation. Background technique [0002] Pyrethroid pesticides have been more and more widely used in the world due to their high insecticidal activity, high selectivity, and the advantages of maintaining high-yield and high-quality agriculture. However, their mass production and use have affected groundwater. , Surface water has caused varying degrees of pollution. It is of far-reaching significance to remove the residual pyrethroid pesticides in the environment and minimize their negative effects. [0003] At present, the treatment technologies for pyrethroid pesticide wastewater mainly include biodegradation, chemical oxidation and physical adsorption. (1) Biodegradation method, although it can be used for the removal of pyrethroid pesticides in theory, due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F220/56C08F220/58C08F220/60C08F212/12C08F222/38C08F222/14C08F2/44C08F2/18C08F8/36C08J9/26C08K9/10C08K3/22B01J20/26B01J20/28C02F1/28C02F101/30
CPCB01J20/06C02F1/281C02F1/285C02F1/288C08F2/18C08F2/44C08F8/36C08F212/12C08F220/06C08F220/56C08F220/58C08F220/60C08J9/26C08K3/22C08K9/10B01J20/268B01J20/28009C02F2101/306C08J2201/0424C08K2201/01C08K2003/2275C08F220/603C08F220/585C08F222/385C08F222/102
Inventor 刘国霞贾冬梅王丽张新曹允洁
Owner BINZHOU UNIV
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