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Cyclodextrin magnetic nano composite material, preparation method and application thereof, and adsorbent

A magnetic nanometer and composite material technology, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems of poor reusability, difficult separation, etc., to enhance specific surface area and envelope sites, improve water solubility. The effect of good performance and high adsorption capacity

Active Publication Date: 2020-12-11
INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The embodiment of the present invention provides a cyclodextrin magnetic nanocomposite material, which has excellent adsorption speed and adsorption capacity, and can improve the problems of existing adsorption materials, such as difficult separation and poor reusability.

Method used

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  • Cyclodextrin magnetic nano composite material, preparation method and application thereof, and adsorbent
  • Cyclodextrin magnetic nano composite material, preparation method and application thereof, and adsorbent
  • Cyclodextrin magnetic nano composite material, preparation method and application thereof, and adsorbent

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preparation example Construction

[0061] The embodiment of the present invention also provides a preparation method of the above-mentioned cyclodextrin magnetic nanocomposite material, comprising:

[0062] S1, preparing magnetic nanoparticles;

[0063] First, metal salt, weak acid and strong base salt and alcohol polymer are mixed and reacted to form nanoparticles, wherein the metal salt is iron salt, preferably ferric chloride; the weak acid and strong base salt is sodium acetate, and the The alcohol polymer is polyethylene glycol, and the solvent used in the reaction is a polyalcohol solvent, preferably ethylene glycol. The use of the above-mentioned substances can ensure the formation of nanoparticles, and ensure that the formed nanoparticles are relatively dispersed and avoid agglomeration. In particular, the use of polyethylene glycol can fully disperse the formed nanoparticles and improve the performance of the formed nanoparticles.

[0064] It should be noted that the embodiments of the present inventi...

Embodiment 1

[0086] This embodiment provides a method for preparing cyclodextrin magnetic nanocomposites, including:

[0087] S1, preparing magnetic nanoparticles;

[0088] Weigh 5g FeCl 3 , 10g of sodium acetate and 4g of polyethylene glycol are placed in a beaker, and 100mL of ethylene glycol solution is added, and stirred evenly on a magnetic stirrer at room temperature. Then the mixed solution was transferred to a high-pressure reactor, heated to 150°C for reaction, and after 8 hours of reaction, after it was naturally cooled to room temperature, it was adsorbed and separated by an external strong magnet, and then washed with deionized water and ethanol to obtain a magnetic product. Nanoparticles.

[0089] Weigh 1 g of the above-prepared nanoparticles, ultrasonically disperse them in 120 mL of a mixed solution of ethanol and deionized water with a volume ratio of 4:1, and add 12 mL of 20% by mass ammonia water and 4 g of TEOS (orthosilicon) under stirring conditions. Ethyl acetate),...

Embodiment 2

[0096] This embodiment provides a method for preparing cyclodextrin magnetic nanocomposites, including:

[0097] S1, preparing magnetic nanoparticles;

[0098] Weigh 6g FeCl 3 , 14g of sodium acetate and 4g of polyethylene glycol were placed in a beaker, and 150mL of ethylene glycol solution was added, and stirred evenly on a magnetic stirrer at room temperature. The mixed solution was then transferred to a high-pressure reactor, heated to 180°C for reaction, and after 10 hours of reaction, it was naturally cooled to room temperature, then adsorbed and separated by an external powerful magnet, and then washed with deionized water and ethanol to obtain nanoparticles.

[0099] Weigh 1.5g of the nanoparticles prepared above, ultrasonically disperse in 160mL of a mixed solution of ethanol and deionized water with a volume ratio of 5:1, and add 20mL of 15% by mass ammonia water and 5g of TEOS under stirring conditions, stir After reacting for 8 hours, it was adsorbed and separate...

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Abstract

The invention relates to the technical field of novel functional magnetic nano materials, in particular to a cyclodextrin magnetic nano composite material as well as a preparation method, applicationand an adsorbent thereof. The embodiment of the invention provides a cyclodextrin magnetic nano composite material, which comprises cyclodextrin and magnetic nano particles, the cyclodextrin is grafted on the surfaces of the magnetic nano particles through a linking agent, and the linking agent is a compound with a conjugated structure and electron donating and accepting capability. The cyclodextrin magnetic nano composite material has excellent adsorption speed and adsorption capacity, and can improve the problems of difficult separation, poor reusability and the like of the existing adsorption material.

Description

technical field [0001] The invention relates to the technical field of novel functional magnetic nanometer materials, in particular to a cyclodextrin magnetic nanocomposite material, its preparation method, application and adsorbent. Background technique [0002] Fluoroquinolone antibiotics are widely used as broad-spectrum fungicides in humans, livestock and aquatic products. Due to long-term and large-scale use, it will be released into the environmental system due to insufficient metabolism in animals and humans, which will affect the soil, rivers and ecological environment. Therefore, the research and development of effective fluoroquinolone antibiotic adsorption detection technology and related enrichment materials have attracted much attention. [0003] Cyclodextrin is a commercial natural macrocyclic molecule, which contains a relatively hydrophobic cavity and a hydrophilic outer surface. Therefore, it can be used as a molecular recognition agent through host-guest i...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30
CPCB01J20/22B01J20/28009
Inventor 王敏李付凯周剑杨梦瑞王彤彤
Owner INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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