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Preparation method and application for magnetic molecularly imprinted polymers for selectively separating carbamazepine

A magnetic molecular imprinting and polymer technology, which is applied in the preparation of test samples, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of cumbersome dynamic separation operation, limited application range, and difficult separation, and achieve simplified samples Processing process, expanding the scope of application, good selectivity effect

Active Publication Date: 2012-12-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-molecularly imprinted materials have a large specific surface area and have significant advantages in adsorption capacity. However, due to their small size, it is difficult to separate them in actual samples. The dynamic separation process is cumbersome and complicated, which limits their application range. Magnetic molecular imprinting technology provides effective solution

Method used

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  • Preparation method and application for magnetic molecularly imprinted polymers for selectively separating carbamazepine
  • Preparation method and application for magnetic molecularly imprinted polymers for selectively separating carbamazepine
  • Preparation method and application for magnetic molecularly imprinted polymers for selectively separating carbamazepine

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Embodiment 1

[0040] The synthesis method of the magnetic molecularly imprinted polymer selectively adsorbing carbamazepine of the present invention is as follows:

[0041] (1) Synthesis of magnetic chitosan nanoparticles: fully dissolve 0.5 g chitosan in 50 mL 3% (v / v) acetic acid aqueous solution, and add 0.2 g Fe 3 o 4 , Ultrasonic dispersion for 30min. After stirring mechanically for 5 min in a constant temperature water bath at 20-30 °C, add 40 mL of liquid paraffin and 0.5 mL of Span 80 in sequence, and use 25% (v / v) NH 3 ·H 2 O aqueous solution was used to adjust the pH of the solution to 8, and finally 1ml of 25% (v / v) glutaraldehyde solution was added, and the temperature was raised to 50°C for 2 hours. After the reaction, the synthesized magnetic chitosan nanoparticles (chitosan-Fe 3 o 4 ), separated by a permanent magnet, washed repeatedly with absolute ethanol and deionized water for 10 times, and then vacuum-dried at 40°C for later use.

[0042] (2) Pre-assembly solution:...

Embodiment 2

[0056] The synthesis method of the magnetic molecularly imprinted polymer selectively adsorbing carbamazepine of the present invention is as follows:

[0057] (1) Synthesis of magnetic chitosan nanoparticles: fully dissolve 0.5g chitosan in 100mL 3% (v / v) acetic acid solution, and add 0.5g Fe 3 o 4 , Ultrasonic dispersion for 30min. After stirring mechanically for 5 min in a constant temperature water bath at 20-30 °C, add 10 mL of liquid paraffin and 0.5 mL of Span 80 in sequence, and use 25% (v / v) NH 3 ·H 2 O aqueous solution was used to adjust the pH of the solution to 9, and finally 3ml of 25% (v / v) glutaraldehyde solution was added, and the temperature was raised to 60°C for 2 hours. After the reaction, the synthesized magnetic chitosan nanoparticles were separated with a permanent magnet, washed repeatedly with absolute ethanol and deionized water for 15 times, and vacuum-dried at 40°C for future use.

[0058] (2) Pre-assembly solution: Weigh 75.6 (0.32 mmol) carbama...

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Abstract

The invention relates to a preparation method and an application for magnetic molecular imprinting polymers for selectively separating carbamazepine and belongs to the technical fields of environmental material preparation and pollution regulation. Nanometer ferroferric oxide modified on a surface of chitosan serves as a magnetic medium, molecular imprinting material polymerization is carried out on the surface of the nanometer ferroferric oxide by using a sediment polymerization method, and a magnetic molecular imprinting adsorption agent is obtained after template molecular carbamazepine is eluted. Obtained molecular imprinting composite materials are stable in physicochemical property, have high adsorption capacity and specific identification characteristics on the carbamazepine, have superparamagnetism, can be rapidly separated under an outside magnetic field effect, therefore, interference of a complex substrate in an actual sample is avoided, and sample treatment processes are greatly simplified. The preparation method is simple, reliable and low in cost and has a wide application prospect in analysis, detection and pollution treatment of a complex environment sample.

Description

technical field [0001] The invention relates to a preparation method and application of a magnetic molecular imprinted polymer for selectively separating carbamazepine. Background technique [0002] Pharmaceuticals and personal care products (PPCPs) are a new class of pollutants. The current situation of extensive use of PPCPs and their special physical and chemical properties have brought certain potential risks to the ecological environment and human health. With the development of modern detection technology, people have detected PPCPs in a variety of environmental samples. At present, more than 50 PPCPs substances have been found in the influent and effluent water of sewage plants, surface water, groundwater and drinking water, with concentrations as high as μg L -1 The research on the behavior, risk and removal mechanism of PPCPs in environmental media has increasingly become the focus of environmental researchers and the public. [0003] Carbamazepine (CBZ), scientif...

Claims

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Application Information

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IPC IPC(8): C08F212/36C08F220/06C08F2/44C08K9/10C08K3/22C08J9/26B01J20/26B01J20/28B01J20/30G01N1/34G01N1/40
Inventor 张亚雷代朝猛张娟高振威周雪飞刘曙光
Owner TONGJI UNIV
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