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Preparation method and application of core-shell magnetic gamma-cyclodextrin polymer composite material

A cyclodextrin polymer, composite material technology, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of long operation process, easy blockage of extraction columns, etc., To achieve the effect of simple design, improvement of uneven coating and good dispersion

Inactive Publication Date: 2018-08-28
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, SPE also has some well-known disadvantages
For example, the extraction column is easy to clog, the operation process takes a long time, etc.

Method used

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  • Preparation method and application of core-shell magnetic gamma-cyclodextrin polymer composite material
  • Preparation method and application of core-shell magnetic gamma-cyclodextrin polymer composite material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of a core-shell magnetic gamma-cyclodextrin polymer composite material, specifically comprising the following steps:

[0034] (1) Fe 3 o 4 Preparation of magnetic balls

[0035] (a) Weigh 6.8 g ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and 2.0 g trisodium citrate (Na 3 Cit·2H 2 O) be dissolved in 200 mL ethylene glycol to obtain an orange clear solution;

[0036] (b) Add 12.0 g of sodium acetate (NaAc) to the solution obtained in step (a), continue magnetic stirring until dissolved, transfer the resulting solution to an 80 mL reactor, heat up to 200 °C and continue the reaction for 12 h;

[0037] (c) Wash the product obtained in step (b) alternately with ultrapure water and absolute ethanol three times each, perform magnetic separation with a magnet, and then dry to obtain Fe 3 o 4 Magnetic ball, spare;

[0038] (2) Fe 3 o 4 Preparation of @PDA core-shell materials

[0039] (1) Weigh 0.121 g of tris (Tris) and dissolve it in 100 mL of...

Embodiment 2

[0047] A preparation method of a core-shell magnetic gamma-cyclodextrin polymer composite material, specifically comprising the following steps:

[0048] (1) Fe 3 o 4 Preparation of magnetic balls

[0049] (a) Weigh 4 g ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and 2 g trisodium citrate (Na 3 Cit·2H 2 O) be dissolved in 150 mL ethylene glycol to obtain an orange clear solution;

[0050] (b) Add 10 g of sodium acetate (NaAc) to the solution obtained in step (a), continue magnetic stirring until dissolved, transfer the resulting solution to a reaction kettle, and heat up to 200 °C for 12 h;

[0051] (c) Wash the product obtained in step (b) alternately with ultrapure water and absolute ethanol three times each, perform magnetic separation with a magnet, and then dry to obtain Fe 3 o 4 Magnetic ball, spare;

[0052] (2) Fe 3 o 4 Preparation of @PDA core-shell materials

[0053] (1) Dissolve 0.1 g of tris (Tris) in 80 mL of secondary water to prepare a 10 mM buffer ...

Embodiment 3

[0061] A preparation method of a core-shell magnetic gamma-cyclodextrin polymer composite material, specifically comprising the following steps:

[0062] (1) Fe 3 o 4 Preparation of magnetic balls

[0063] (a) Weigh 8 g ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and 3 g trisodium citrate (Na 3 Cit·2H 2 O) be dissolved in 300 mL ethylene glycol to obtain an orange clear solution;

[0064] (b) Add 15 g of sodium acetate (NaAc) to the solution obtained in step (a), continue magnetic stirring until dissolved, transfer the resulting solution to a reaction kettle, heat up to 200 °C and continue the reaction for 12 h;

[0065] (c) Wash the product obtained in step (b) alternately with ultrapure water and absolute ethanol three times each, perform magnetic separation with a magnet, and then dry to obtain Fe 3 o 4 Magnetic ball, spare;

[0066] (2) Fe 3 o 4 Preparation of @PDA core-shell materials

[0067] (1) Dissolve 0.2 g of tris (Tris) in 150 mL of secondary water to ...

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Abstract

The invention discloses a preparation method and application of a core-shell magnetic gamma-cyclodextrin polymer composite material. The composite material is composed of multiple layers of polydopamine (PDA) and cyclodextrin polymer (P-CDP) coating each other, wherein each P-CDP layer has a thickness of about 20 nm. The composite material disclosed by the invention uses PDA as a binder, and the cyclodextrin polymer can uniformly coat magnetic balls under the condition of water-bath heating and continuous stirring. Compared with a simple cyclodextrin polymer material, the composite material has magnetic property to make the solid-liquid separation simpler and faster, and has more adsorption sites through the uniform coating of the cyclodextrin polymer. The preparation process is simple, and the composite material has good separation and enrichment effect on microcystins, and has good application prospects in the fields of water environment analysis and aquaculture risk warning.

Description

technical field [0001] The invention belongs to the technical field of preparation of adsorption materials, and in particular relates to a preparation method and application of a core-shell magnetic gamma-cyclodextrin polymer composite material. Background technique [0002] Solid-phase extraction (SPE) is a common pretreatment method for the separation and enrichment of algal toxins. SPE has the advantages of simple operation and low solvent consumption. However, SPE also has some well-known disadvantages. For example, the extraction column is easy to clog, and the operation process takes a long time. In order to overcome these shortcomings, some new technologies and new methods of solid-phase extraction have been derived, such as Magnetic solid-phase extraction (Magnetic solid-phase extraction, MSPE), which uses the help of an external magnetic field generated by a permanent magnet to make the magnetic solid phase Separation of sorbent from sample solution becomes easie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/26B01J20/30C02F1/28
CPCB01J20/06B01J20/262B01J20/28009C02F1/281C02F1/285C02F2303/04
Inventor 张兰林明霞童萍卢巧梅
Owner FUZHOU UNIV
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