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Preparation of difunctional monomer magnetic molecularly-imprinted polymer and application of polymer in adsorption on bisphenol A in wastewater

A magnetic molecular imprinting, bifunctional monomer technology, applied in the fields of adsorption water/sewage treatment, water pollutants, water/sewage treatment, etc., can solve the problems of small adsorption capacity and low selectivity

Inactive Publication Date: 2016-09-07
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current magnetic molecularly imprinted materials are composed of a single functional monomer molecule, which has a small adsorption capacity and low selectivity, and cannot meet the increasingly complex environmental monitoring requirements.

Method used

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  • Preparation of difunctional monomer magnetic molecularly-imprinted polymer and application of polymer in adsorption on bisphenol A in wastewater
  • Preparation of difunctional monomer magnetic molecularly-imprinted polymer and application of polymer in adsorption on bisphenol A in wastewater
  • Preparation of difunctional monomer magnetic molecularly-imprinted polymer and application of polymer in adsorption on bisphenol A in wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. ATP / Fe 3 O 4 Preparation of particles

[0047] Take 1.50g attapulgite (ATP) and disperse in 100mL secondary water; 4.4g FeCl 3 ·6H 2 O was dispersed in 100ml of secondary water, the two were mixed and ultrasonically dispersed for 30 minutes, and then magnetically stirred for 12 hours under the protection of nitrogen to obtain a suspension. Take 1.6 gFeCl 2 ·4H 2 O was added to the suspension, heated to 90℃ and added 6mL of ammonia water (25%, w:w), stirred rapidly for 1h, a black precipitate was formed, cooled to room temperature, washed with double distilled water to neutrality, and dried at 60℃ in vacuum 12h, get ATP / Fe 3 O 4 Particles, spare.

[0048] 2. Preparation of MMIPs (BPA) molecularly imprinted polymers

[0049] Add 1.0mmol of template molecule bisphenol A, 1.0mmol of monomer methacrylic acid, 1.0mmol of acrylamide and 90mL of porogen acetonitrile into a 250mL round-bottomed flask, and magnetically stir for 12h to make monomer and template molecule fully self-as...

Embodiment 2

[0052] 1. ATP-Fe 3 O 4 Preparation of particles: same as Example 1;

[0053] 2. Preparation of MMIPs (BPA) molecularly imprinted polymer: The addition amount of ethylene glycol dimethacrylate is 15 mmol, and the others are the same as in Example 1. The adsorption capacity of MMIPs(BPA) on BPA is 2988.7ug / g.

Embodiment 3

[0055] 1. ATP-Fe 3 O 4 Preparation of particles: same as Example 1;

[0056] 2. Preparation of MMIPs (BPA) molecularly imprinted polymers: the addition amount of ethylene glycol dimethacrylate is 20 mmol, and the others are the same as in Example 1. The adsorption capacity of MMIPs(BPA) on BPA is 2903.5ug / g.

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Abstract

The invention discloses a difunctional monomer magnetic molecularly-imprinted polymer. The difunctional monomer magnetic molecularly-imprinted polymer is prepared by taking ATP-Fe3O4 as a matrix, taking bisphenol A as a template and taking acrylamide and methacrylic acid as functional monomers under the action of a cross-linking agent and an initiating agent through a thermal polymerization method. Adsorption tests show that the prepared difunctional monomer magnetic molecularly-imprinted polymer shows the high selective recognition capacity on template molecule bisphenol A, has the high heat stability, has the specific adsorption effect on BPA in the wastewater, is used for detecting BPA in a water sample and has the advantages of the fast responsiveness, the predetermination property, the recognizability and the practicability, and therefore the difunctional monomer magnetic molecularly-imprinted polymer has the very good application prospect in detection and adsorption on bisphenol A (BPA) in the wastewater in wastewater treatment.

Description

Technical field [0001] The invention belongs to the technical field of detection and treatment of organic pollutants in wastewater, and relates to a method for preparing a surface molecularly imprinted polymer using methacrylic acid and acrylamide as functional monomers; the invention also relates to the polymer's ability to adsorb wastewater The application of bisphenol A. Background technique [0002] Bisphenol A, also called BPA, is used to synthesize materials such as polycarbonate (PC) and epoxy resin in industry. Since the 1960s, it has been used to make plastic (milk) bottles, sucker cups for children, and the inner coating of food and beverage (milk powder) cans. BPA is everywhere, from mineral water bottles, medical equipment to the inside of food packaging. Every year, 27 million tons of BPA-containing plastics are produced worldwide. But BPA can also cause endocrine disorders, threatening the health of fetuses and children. Obesity caused by cancer and metabolic di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/20C08F220/06C08F220/56C08K3/34C08K3/22C02F1/28C02F101/34
CPCC08F236/20C02F1/285C02F2101/345C08K3/22C08K3/346C08K2003/2275C08F220/06C08F220/56
Inventor 杨武包慧芳郭昊卢秀黄萍林丹安惠惠
Owner NORTHWEST NORMAL UNIVERSITY
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