Magnetic chitosan composite microsphere surface imprinted adsorbent and preparation method thereof

A technology of composite microspheres and surface imprinting, which is applied in the direction of solid adsorbent liquid separation, selective adsorption, separation methods, etc., can solve the problems of difficult detection of chloramphenicol residues, etc., and achieve obvious chloramphenicol molecular recognition performance and fast adsorption kinetics The effect of scientific nature and simple process

Inactive Publication Date: 2015-05-06
JIANGSU UNIV
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Problems solved by technology

[0005] In order to solve the problem that the residue of chloramphenicol in the environment is not easy to detect, the present invention provides a magnetic chitosan with selective recognition performan

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  • Magnetic chitosan composite microsphere surface imprinted adsorbent and preparation method thereof
  • Magnetic chitosan composite microsphere surface imprinted adsorbent and preparation method thereof
  • Magnetic chitosan composite microsphere surface imprinted adsorbent and preparation method thereof

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Embodiment Construction

[0033] The present invention will be further described below with reference to the drawings and specific embodiments, but the protection scope of the present invention is not limited to this.

[0034] The magnetic chitosan composite microsphere surface imprinting adsorbent of the present invention comprises nano-scale magnetic particles, chitosan physically coated on the surface of the magnetic particles, and a mixture of ethylene glycol bis(methacrylic acid) ester A chloramphenicol adsorbent attached to the chitosan surface. The present invention utilizes the magnetic properties of nano-scale magnetic particles, and the magnetic chitosan composite microsphere surface imprinting adsorbent of the present invention has a good separation effect on chloramphenicol in the environment; therefore, the nano-scale magnetic particles are Nano Fe 3 O 4 , Γ-Fe 2 O 3 , MnFe 2 O 4 One of them. The chloramphenicol adsorbent is an adsorbent with recognition and adsorption effects for chloramphe...

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Abstract

The invention provides a magnetic chitosan composite microsphere surface imprinted adsorbent and a preparation method thereof; the imprinted adsorbent contains nanoscale magnetic particles and chitosan physically coating the surface of the magnetic particles; firstly, magnetic chitosan composite microspheres are prepared by an emulsion crosslinking polymerization reaction, the nanoscale magnetic particles are wrapped inside the magnetic chitosan composite microspheres, and then an imprinted polymer is wrapped on the surface of the magnetic chitosan composite microspheres by a precipitation polymerization reaction. The surface imprinted adsorbent has the advantages of fast adsorption kinetics properties, relatively high adsorption capacity, fast magnetic separation efficiency and obvious chloramphenicol molecular recognition properties, and can be used for chloramphenicol selective recognition, separation and enrichment in the environment. The preparation method has the advantages of simple process, uniform particle size of the synthetic product, easy controlled temperature, easy separation of the product and the like.

Description

Technical field [0001] The invention belongs to the field of environmental functional materials, in particular to a magnetic chitosan composite microsphere surface imprinting adsorbent and a preparation method thereof. Background technique [0002] Molecular imprinting technology is to simulate the molecular recognition of antibodies and antigens in nature, and use target molecules as template molecules to prepare molecular imprinted polymers that have specific and selective recognition functions for template molecules. Valence, non-covalent and semi-covalent functional monomers polymerize with cross-linking agent around template molecules to form a three-dimensional cross-linked polymer network. After the template molecule is removed by extraction and other methods, an imprinted polymer with special affinity and recognition pores for the template molecule is obtained. Surface molecular imprinting technology, by establishing molecular recognition sites on the surface of the matr...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30B01D15/08
CPCB01J20/24B01D15/3852B01J20/06B01J20/28009B01J2220/445
Inventor 马威陈龙朱文静于欣平李春香闫永胜
Owner JIANGSU UNIV
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