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Temperature-sensitive magnetic sulfadimidine molecular imprinted adsorbent as well as preparation method and application thereof

A technology of sulfamethazine and molecular imprinting, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as complex components, achieve high adsorption capacity, good magnetic and thermal stability, The effect of good magnetic and thermal response properties

Inactive Publication Date: 2012-11-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composition of environmental water is complex, and it is particularly important to selectively identify and separate target antibiotic residues.

Method used

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  • Temperature-sensitive magnetic sulfadimidine molecular imprinted adsorbent as well as preparation method and application thereof
  • Temperature-sensitive magnetic sulfadimidine molecular imprinted adsorbent as well as preparation method and application thereof
  • Temperature-sensitive magnetic sulfadimidine molecular imprinted adsorbent as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0022] (1) Vinyl modified magnetic composite material (MPS-γ-Fe 2 o 3 / SiO 2 ) preparation

[0023] 300 mg γ-Fe 2 o 3 Nanoparticles were dispersed in a mixed solution of 50 ml isopropanol and 4.0 ml distilled water to obtain reaction solution 1. After the reaction solution 1 was ultrasonically dispersed for 15 min, 5.0 ml of ammonia water and 2.0 ml of tetraethyl orthosilicate (TEOS) were added therein to obtain the reaction solution 2. The reaction solution 2 was mechanically stirred at 25°C and 300 rpm for 12 h, and then 2.5 ml of 3-(methacryloyloxy)propyltrimethoxysilane (MPS) was added to it to obtain the reaction solution 3, which was in Mechanical stirring at 25°C and 300 rpm for 24 h, the product MPS-γ-Fe 2 o 3 / SiO 2 Collect with Nd-Fe-B permanent magnet, wash with absolute ethanol and distilled water three times, and dry in vacuum at 60°C for 12 h.

[0024] (2) Preparation of thermosensitive magnetic molecularly imprinted polymers (TMMIPs)

[0025] Disperse ...

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Abstract

The invention discloses a temperature-sensitive magnetic sulfadimidine molecular imprinted adsorbent as well as a preparation method and application thereof, belonging to the technical field of preparation of environment functional materials. A gamma-Fe2O3 / SiO2 magnetic composite material is prepared by using a sol-gel method and is subjected to vinyl modification by using 3-(methylacryloyloxy) trimethoxypropylsilane; with a vinyl-modified magnetic composite material (MPS (Modified Polystyrene)-gamma-Fe2O3 / SiO2) as a substrate material, sulfadimidine as a template molecule, acrylamide as a functional monomer, N-isopropylacrylamide as a temperature-sensitive monomer, ethylene glycol-bis(methylacrylic acid) ester as a cross-linking agent and 2,2'-azobisisobutyronitrile as an initiator, a temperature-sensitive magnetic molecular imprinted polymer is prepared by using a free group polymerization process and is applied to selective recognition and separation of the sulfadimidine in an aqueous solution; and the obtained polymer has the advantages of remarkable heat and magnet stability, sensitive magnet and heat inducting effect, higher adsorption capacity, reversible adsorption / release function along with the temperature and remarkable recognition performance of a sulfadimidine molecule.

Description

Technical field [0001] The present invention is the field of environmental functional materials preparation technology, involving a temperature -sensitive magnetic sulfrazamine miraculine molecular imprinting adsorbent and its preparation methods and applications. Background technique [0002] Molecular printing technology is an effective way to prepare polymer materials for a specific molecule to recognize. The prepared polymer materials are called molecular marks polymer (MIPS).MIPS prepared by traditional ontology has the essence of highly cross -linking. Temphrates are not easy to remove from the polymer, which causes the MIPS to identify dynamic performance and saturated adsorption capacity of MIPS.Surface molecular printing technology has better solved the above -mentioned serious defects of the existence of traditional molecular seal technology by building molecular identification sites on the surface of matrix materials.Due to the larger surface area, cheap cost, and exce...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
Inventor 潘建明徐龙城戴江栋孟敏佳闫永胜
Owner JIANGSU UNIV
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