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A kind of preparation method and application of iron oxyhydroxide covalent organic framework composite material

A covalent organic framework, iron oxyhydroxide technology, applied in chemical instruments and methods, other chemical processes, natural water treatment, etc., can solve the problems of lack of porous structure, non-renewable, easy aggregation of functional group inorganic nanoparticles, etc. Achieve the effect of overcoming easy aggregation, strong renewable ability, and improving renewable ability

Active Publication Date: 2022-04-12
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that current quinolone antibiotic adsorbents lack porous structure and clear functional groups, and inorganic nanoparticles are easy to aggregate and non-renewable, the present invention provides a preparation method of iron oxyhydroxide covalent organic framework composite material and its application in quinolone The application in the removal of quinolone antibiotics, the material can provide the dual force of electrostatic attraction and coordination at the same time, synergistically enhance the binding ability of the adsorbent to quinolone antibiotics, and at the same time have good regeneration performance, in the removal of quinolone antibiotics in the water environment Has a good application prospect

Method used

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  • A kind of preparation method and application of iron oxyhydroxide covalent organic framework composite material
  • A kind of preparation method and application of iron oxyhydroxide covalent organic framework composite material
  • A kind of preparation method and application of iron oxyhydroxide covalent organic framework composite material

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Embodiment 1

[0034] Example 1: Preparation method and property characterization of iron oxyhydroxide covalent organic framework composite

[0035] (1) Preparation of sulfonic acid-functionalized covalent organic framework: 126.1 mg 2,4,6-trialdehyde phloroglucinol and 169.4 mg 2,5-diaminobenzenesulfonic acid were sequentially added to a Pyrex glass tube Acid, 4.8mL of mesitylene, 1.2mL of 1,4-dioxane and 1.2mL of acetic acid, the mixed solution was ultrasonicated for 10 minutes, degassed by freezing-pump-thawing cycle three times, then the flame was sealed, and the Pyrex tube was placed React in an oven at 120°C for 3 days, cool to room temperature, centrifuge the product, wash the precipitate several times with tetrahydrofuran and N,N-dimethylformamide to remove unreacted raw materials and oligomers, and place the precipitate at 90 ℃ vacuum drying oven for 12 hours to make sulfonic acid functionalized covalent organic framework material (TpPa-SO 3 H);

[0036] (2) Preparation of iron ox...

Embodiment 2

[0040] Example 2: Application of iron oxyhydroxide covalent organic framework composites in the adsorption of quinolone antibiotics

[0041] Three kinds of quinolone antibiotic solids such as norfloxacin (NOR), ciprofloxacin (CIP) and enrofloxacin (ENR) were taken by weighing respectively and dissolved in deionized water, and the concentration to be prepared was 10-500ppm. with solution. Take 5mg FeOOH@TpPa-SO 3 Material H was added to a 15mL centrifuge tube, mixed with 10mL aqueous solutions containing different concentrations of norfloxacin, ciprofloxacin, and enrofloxacin, and placed in a 150mL Erlenmeyer flask, and the solution was adjusted with sodium hydroxide solution If the pH value is 8.0, place the centrifuge tube in a constant temperature oscillator at 25°C and shake at a speed of 180rpm for 10 minutes; centrifuge, take the supernatant, pass through a 0.45μm filter membrane, and use high-performance liquid chromatography and high-performance liquid chromatography. ...

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Abstract

The invention discloses a preparation method and application of an iron oxyhydroxide covalent organic framework composite material, belonging to the technical field of environmental protection. The sulfonic acid functionalized covalent organic framework matrix material is first synthesized, and then the iron oxyhydroxide nanoparticles are generated in situ through the hydrolysis reaction with iron ions to prepare the iron oxyhydroxide covalent organic framework composite material. The composite material has good thermal stability and chemical stability, and at the same time, due to the introduction of double binding sites of iron oxyhydroxide nanoparticles and sulfonic acid groups, it provides dual forces of electrostatic attraction and coordination. Due to the different action sites of the bifunctional groups, the synergistic effect of the dual forces produces a strong binding force between the iron oxyhydroxide covalent organic framework composite and the quinolone antibiotics, and still has good removal even in complex water environments. Efficiency, can be used as an efficient adsorbent for quinolone antibiotics in the environment.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a preparation method and application of an iron oxyhydroxide covalent organic framework composite material. Background technique [0002] In recent years, quinolone antibiotics have been widely used in disease treatment and aquaculture due to their excellent antibacterial activity. However, the incomplete metabolism and illegal discharge of quinolone antibiotics in the human body lead to the occurrence of quinolone antibiotic residues in various water environments. Unfortunately, traditional water treatment technologies are difficult to effectively remove quinolone antibiotics, leading to a further increase in quinolone antibiotics in the water environment. In particular, antibiotic residues can be further transferred to the ocean through inland rivers, and overlap with the abuse of antibiotics in offshore aquaculture, resulting in increasingly prominent probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/40C08G12/08B01J20/22C02F1/28C02F103/34
CPCC08G12/40C08G12/08B01J20/226C02F1/285C02F2103/343
Inventor 梁汝萍姜伟邱建丁
Owner NANCHANG UNIV