Facile Synthesis of Porous Cyclodextrin Polymers for Efficient Removal of Antibiotics in Water

A technology of cyclodextrin polymer and synthesis method, applied in water pollutants, chemical instruments and methods, water/sewage treatment and other directions, can solve the problems of difficult reuse, poor adsorption capacity of antibiotics, etc. Low adsorption capacity, overcoming the effect of poor repeated adsorption efficiency

Active Publication Date: 2021-08-10
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the problems existing in the above-mentioned prior art, the present invention provides a simple synthesis method of a porous cyclodextrin polymer that efficiently removes antibiotics in water, which can greatly increase the specific surface area of ​​cyclodextrin, and solve the problem of antibiotic adsorption by traditional cyclodextrin materials. The capacity is poor, it is difficult to reuse the problem, and the preparation method is simple and easy to implement

Method used

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  • Facile Synthesis of Porous Cyclodextrin Polymers for Efficient Removal of Antibiotics in Water
  • Facile Synthesis of Porous Cyclodextrin Polymers for Efficient Removal of Antibiotics in Water
  • Facile Synthesis of Porous Cyclodextrin Polymers for Efficient Removal of Antibiotics in Water

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Embodiment 1

[0036] A simple method for synthesizing a porous cyclodextrin polymer for efficiently removing antibiotics in water, specifically comprising the following steps:

[0037] Step 1. Uniformly dissolve 8.0 g of soluble β-cyclodextrin powder, 4.0 g of tetrafluoroterephthalonitrile, and 12.8 g of potassium carbonate in 500 ml of dimethylformamide solvent to obtain a reaction precursor solution;

[0038] Step 2, reacting the obtained reaction precursor solution in an oil bath at 85°C for 2 days;

[0039] Step 3. After the polymerization reaction, cool naturally, separate and extract the porous β-cyclodextrin polymer through a simple suction filtration process, dry at 60°C, and grind it into powder after drying to obtain the desired porous cyclodextrin polymer thing. The surface of the porous cyclodextrin polymer is rich in active hydroxyl groups, and the specific surface area can reach 270.84m 2 / g, and the removal efficiency of tetracycline, doxycycline, levofloxacin, gatifloxacin...

Embodiment 2

[0047] A simple method for synthesizing a porous cyclodextrin polymer for efficiently removing antibiotics in water, specifically comprising the following steps:

[0048] Step 1. Uniformly dissolve soluble 5g of β-cyclodextrin, 3g of terephthalic acid, and 10g of potassium carbonate in 350mL of N,N-dimethylacetamide solvent to obtain a reaction precursor solution;

[0049] Step 2, reacting the obtained reaction precursor solution in an oil bath at 80°C for 1.5 days;

[0050] Step 3. After the polymerization reaction, cool naturally, separate and extract the porous β-cyclodextrin polymer through a simple suction filtration process, dry at 60°C, and grind it into powder after drying to obtain the desired porous cyclodextrin polymer thing.

[0051] The specific surface area of ​​the porous cyclodextrin polymer can reach 234.6m 2 / g, the pore size is 2.2nm, and the removal efficiencies of tetracycline, doxycycline, levofloxacin, gatifloxacin and other four common antibiotics in ...

Embodiment 3

[0053] A simple method for synthesizing a porous cyclodextrin polymer for efficiently removing antibiotics in water, specifically comprising the following steps:

[0054] Step 1. Uniformly dissolve 10 g of γ-cyclodextrin, 4.5 g of trimesic acid, and 13 g of sodium carbonate in 500 mL of N,N-dimethylformamide solvent to obtain a reaction precursor solution;

[0055] Step 2, reacting the obtained reaction precursor solution in an oil bath at 88°C for 2.5 days;

[0056] Step 3. After the polymerization reaction, cool naturally, separate and extract the porous β-cyclodextrin polymer through a simple suction filtration process, dry at 60°C, and grind it into powder after drying to obtain the desired porous cyclodextrin polymer thing.

[0057] The specific surface area of ​​the porous cyclodextrin polymer can reach 286.5m 2 / g, the pore size is 3.5nm, and the removal efficiencies of tetracycline, doxycycline, levofloxacin, gatifloxacin and other four common antibiotics in water ar...

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Abstract

The invention discloses a simple synthesis method of a porous cyclodextrin polymer for efficiently removing antibiotics in water, which belongs to the field of porous polymer synthesis, and comprises the following steps: step 1, drying an appropriate amount of cyclodextrin monomer powder, benzene intermediate The ligand and the carbonate are dissolved in an organic solvent to obtain a reaction precursor solution; step 2, the obtained reaction precursor solution is subjected to a polymerization reaction under oil bath conditions; step 3, after the polymerization reaction is completed, cooling, suction filtration, The porous cyclodextrin polymer is separated and extracted, dried and ground into powder to obtain the desired porous cyclodextrin polymer. The synthesis method of the invention can greatly increase the specific surface area of ​​the cyclodextrin, solve the problem that traditional cyclodextrin materials have poor adsorption capacity for antibiotics and are difficult to reuse, and the preparation method is simple and easy to realize.

Description

technical field [0001] The invention relates to a simple synthesis method of a porous cyclodextrin polymer for efficiently removing antibiotics in water, belonging to the field of porous polymer synthesis. Background technique [0002] Antibiotics are microbial secondary metabolites that can selectively inhibit certain biological life activities at low concentrations, and their chemical semi-synthetic or fully synthetic derivatives. Antibiotics can inhibit or kill pathogenic microorganisms and are important drugs for the prevention and treatment of infectious diseases. Antibiotics have existed for a long time. People have widely used antibiotics and continuously researched new analytical techniques. It was not until the mid-1990s that the abundance of antibiotics in the ecological environment began to become the focus of attention. Large quantities of antibiotics released by humans into the environment pose potential hazards to various organisms in the sea and on land, as e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/16C08J9/28C02F1/28C02F101/30C08L5/16
CPCC02F1/285C02F2101/30C08B37/0012C08J9/28C08J2305/16
Inventor 孔令涛何军勇刘锦淮
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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