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A preparation method of yeast magnetic imprinted composite microsphere adsorbent

A technology of composite microspheres and yeasts, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as endocrine disorders and central nervous palsy, and achieve good magnetic strength and fast Effect of Separation, Excellent Choice Recognition Performance

Inactive Publication Date: 2016-06-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Pyrethroid pesticides are widely used in agriculture, fishery, forestry and household insecticides due to their high insecticidal properties. Compared with organochlorine pesticides, pyrethroids have lower toxicity in organisms and relatively faster biotransformation and metabolism , but this kind of insecticide is absorbed through breathing or epidermis, which contains neurotoxins and can easily cause central nervous paralysis and endocrine disorders

Method used

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  • A preparation method of yeast magnetic imprinted composite microsphere adsorbent
  • A preparation method of yeast magnetic imprinted composite microsphere adsorbent
  • A preparation method of yeast magnetic imprinted composite microsphere adsorbent

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Embodiment 1

[0042] 1. A method for preparing yeast magnetically imprinted composite microsphere adsorbent, characterized in that it is carried out according to the following steps:

[0043] (1) Fe 3 o 4 Preparation of nanoparticles and their hydrophobic modification:

[0044] 1gFeCl 3 ·6H 2 O and 0.5gFeCl 2 4H 2 O was dissolved in 50ml of deionized water, stirred at 20°C for 10min, 30ml of NaOH solution (concentration: 0.2mol / L) was quickly added to the above solution in a nitrogen atmosphere, and vigorously stirred for 10min. Generated Fe 3 o 4 After the nanoparticles were separated and recovered by a magnet, they were washed 3 times with absolute ethanol, dispersed in 40 ml of a mixture of oleic acid and absolute ethanol with a volume ratio of 1:1, and stirred for 3 h at 30°C. Washed 6 times with water and ethanol, and dried under vacuum at 40°C.

[0045] (2) Modification of yeast:

[0046] Disperse 0.5g of yeast in 30ml of a mixed solution of water and absolute ethanol with ...

Embodiment 2

[0060] 1. A method for preparing yeast magnetically imprinted composite microsphere adsorbent, characterized in that it is carried out according to the following steps:

[0061] (1) Fe 3 o 4 Preparation of nanoparticles and their hydrophobic modification:

[0062] 3gFeCl 3 ·6H 2 O and 1.5gFeCl 2 4H 2 O was dissolved in 100ml of deionized water, stirred at 50°C for 20min, 60ml of NaOH solution (concentration: 0.6mol / L) was quickly added to the above solution in a nitrogen atmosphere, and vigorously stirred for 30min. Generated Fe 3o 4 After the nanoparticles were separated and recovered by a magnet, they were washed 3 times with absolute ethanol, dispersed in 40ml of a mixture of oleic acid and absolute ethanol with a volume ratio of 1:4, and stirred at 70°C for 8 hours. Washed 6 times with water and ethanol, and dried under vacuum at 40°C.

[0063] (2) Modification of yeast:

[0064] Disperse 2.5g of yeast in 30ml of a mixed solution of water and absolute ethanol wi...

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Abstract

The invention relates to a preparation method of a microzyme magnetic blotting composite microsphere adsorbent, and belongs to the technical field of environmentally-friendly functional material preparation. The method comprises the following steps: preparing ferriferrous oxide nanoparticles through a coprecipitation process, carrying out hydrophobic modification on the surface of the nanoparticles, preparing a stable Pickering emulsion with an oleic acid modified microzyme aqueous solution as a water phase, cyhalothrin as a template molecule, methacrylic acid and 4-vinylpyridine as functional monomers, ethylene glycol dimethacrylate as a cross-linking agent, dimethyl 2,2'-azobis(2-methylpropionate) as an initiator and hydrophobic Fe3O4 as an oil phase, and carrying out thermal-initiated polymerization to prepare the microzyme magnetic blotting composite microsphere adsorbent. Blotting microspheres obtained in the invention have a good magnetic stability, and the adsorption balance, the dynamics and the selection identification performance of the adsorbent are researched through static state adsorption experiments. Results show that the blotting adsorbent prepared in the invention has a good adsorption capacity, fast adsorption kinetics, and has a selection identification performance on LC.

Description

technical field [0001] The invention relates to a preparation method of yeast magnetically imprinted composite microsphere adsorbent, which belongs to the technical field of preparation of environmental protection functional materials. Background technique [0002] Molecular imprinting technology refers to the formation of a polymer network around template molecules, leaving binding sites with recognition ability in the polymer network structure after removing template molecules, showing a high degree of selective recognition performance for template guest molecules. The application of magnetic separation technology to molecular imprinting is conducive to the rapid and simple separation of magnetic polymers from samples. Magnetic molecular imprinting technology has broad application prospects because of its high selectivity, easy separation, reusability, cheap and easy preparation. [0003] Pickering emulsion has attracted a lot of attention in recent years. It uses solid p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
Inventor 李春香朱文静潘建明瞿琴甘梦颖
Owner JIANGSU UNIV
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