Porous ionic/molecular imprinted polymer preparation method

A technology of molecular imprinting and ion imprinting, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of single adsorption target and narrow application range

Inactive Publication Date: 2016-11-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of single adsorption target and narrow application range in the preparation of

Method used

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  • Porous ionic/molecular imprinted polymer preparation method
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  • Porous ionic/molecular imprinted polymer preparation method

Examples

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Embodiment 1

[0032] (1) Preparation of silica nanoparticles (SPs)

[0033] First, 90 mL of ethanol, 3.14 mL of water, and 3.14 mL of concentrated ammonia were added into a 250 mL round bottom flask under magnetic stirring. After stirring for 5 minutes, 3.14 mL of tetraethyl silicate (TEOS) was added dropwise thereto, and the mixture was o The reaction was continued for 0.5 h at C, and the stirring speed was maintained at 700 rpm. Subsequently, the reaction product was recovered by high-speed centrifugation, washed with methanol at least three times, and then washed at 50 o C under vacuum for 12 h.

[0034] (2) Preparation of ion-imprinted polymer nanoparticles (IIPs)

[0035] First, 0.154 g copper chloride (CuCl 2 ) was dissolved in 16 mL of methanol and stirred by a magnet, then 0.69 mL of N-aminoethyl-3-aminopropyltrimethoxysilane (DAMO) was added, and the mixed solution was continuously stirred and heated at 40 o C under reflux for 0.5 h, and then add 30 mL of silicon dioxide metha...

Embodiment 2

[0043] (1) Preparation of silica nanoparticles (SPs)

[0044] First, 90 mL of ethanol, 10 mL of water, and 3.14 mL of concentrated ammonia were added into a 250 mL round bottom flask under magnetic stirring. After stirring for 10 minutes, 6.0 mL of tetraethyl silicate (TEOS) was added dropwise, and the mixture was o The reaction was continued for 1.0 h at C, and the stirring speed was maintained at 700 rpm. Subsequently, the reaction product was recovered by high-speed centrifugation, washed with methanol at least three times, and then washed at 60 o C under vacuum for 12 h.

[0045] (2) Preparation of ion-imprinted polymer nanoparticles (IIPs)

[0046] First, 0.154 g copper chloride (CuCl 2 ) was dissolved in 16 mL of methanol and stirred by a magnet, then 0.8 mL of N-aminoethyl-3-aminopropyltrimethoxysilane (DAMO) was added, and the mixed solution was continuously stirred and heated at 45 o C under reflux for 1.0 h, and then add 34 mL of silicon dioxide in methanol disp...

Embodiment 3

[0050] (1) Preparation of silica nanoparticles (SPs)

[0051] First, 90 mL of ethanol, 12.56 mL of water, and 3.14 mL of concentrated ammonia were added into a 250 mL round bottom flask under magnetic stirring. After stirring for 15 minutes, 9.42 mL of tetraethyl silicate (TEOS) was added dropwise, and the mixture was o The reaction was continued for 2.0 h at C, and a stirring speed of 700 rpm was maintained. Subsequently, the reaction product was recovered by high-speed centrifugation, washed with methanol at least three times, and then washed at 70 o C under vacuum for 12 h.

[0052] (2) Preparation of ion-imprinted polymer nanoparticles (IIPs)

[0053] First, 0.154 g copper chloride (CuCl 2 ) was dissolved in 16 mL of methanol and stirred by a magnet, then 0.847 mL of N-aminoethyl-3-aminopropyltrimethoxysilane (DAMO) was added, and the mixed solution was continuously stirred and heated at 50 o C under reflux for 1.5 h, and then add 40 mL of silicon dioxide in methanol ...

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Abstract

The invention belongs to the technical field of preparation of environment function materials and relates to a porous ionic/molecular imprinted polymer preparation method. The method includes: preparing solid silicon balls, forming ionic imprinted polymer layers on surfaces of the solid silicon balls to serve as stable particles, and preparing ionic/molecular imprinted polymers (I-MIPs) of Pickering high-internal-phase emulsion by ATRP (atom transfer radical polymerization) molecular imprinting; performing a series of treatments to obtain an adsorbent, and applying the adsorbent to selective recognition and separation of LC (lambda cyhalothrin) in a water solution; the prepared molecular/ionic dual-recognition molecular imprinted material has high thermal stability and adsorption capacity and has a porous structure and an evident LC molecule and copper ion recognition performance.

Description

technical field [0001] The invention relates to a preparation method of a porous ion / molecular imprinted polymer, in particular to a two-step method for preparing an ion / molecular double-site imprinted polymeric porous imprinted adsorbent, which belongs to the technical field of environmental functional material preparation. Background technique [0002] Adsorption is the simplest and most effective method to remove residual organic pesticides and heavy metal ions in the environment, but the selectivity needs to be improved in practical application. Molecular or ion imprinting technology is a technique used to prepare molecular or ion imprinted polymers (Molecular Imprinted Polymers / Ion Imprinted Polymers, MIPs / IIPs), which can selectively remove target substances quickly and effectively, And can be reused. By traditional methods, such as bulk polymerization, MIPs prepared by dissolving functional monomers, template molecules, cross-linking agents, and initiators in an iner...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C08F212/08C08F212/36C08F220/06C08F220/56C08F2/32C08J9/26C02F101/36C02F101/20
CPCB01J20/268C02F1/285C02F2101/20C02F2101/36C08F2/32C08F212/08C08J9/26C08F212/36C08F220/06C08F220/56
Inventor 朱恒佳潘建明黄伟刘树成刘金鑫姚俊彤张文莉
Owner JIANGSU UNIV
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