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Molecular imprinting type MOFs catalyst and preparation and application thereof in specific catalytic degradation of antibiotics

A technology of molecular imprinting and catalyst, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc. It can solve the problem of weak specific recognition ability of antibiotics and low adsorption capacity, etc. problems, to achieve high adsorption capacity performance, ultra-high specific surface area effect

Inactive Publication Date: 2020-11-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problems of low specific recognition ability and low adsorption capacity of low-concentration antibiotics in the sewage treatment process in the prior art

Method used

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  • Molecular imprinting type MOFs catalyst and preparation and application thereof in specific catalytic degradation of antibiotics
  • Molecular imprinting type MOFs catalyst and preparation and application thereof in specific catalytic degradation of antibiotics
  • Molecular imprinting type MOFs catalyst and preparation and application thereof in specific catalytic degradation of antibiotics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: be that sulfamethazine, 2-aminoterephthalic acid and ferric chloride are placed in the 50mL conical flask that fills 15mL N-N dimethylformamide that the molar ratio is 1:1:2, Sonicate to dissolve completely. The mixture was placed in a 25mL hydrothermal reactor and reacted at 110°C for 24h. After cooling to room temperature, centrifuge at 10000 rpm for 10 min to collect the solid product in the solution. Then the solid product was stirred and eluted with ethanol at 60°C for 3 times, each time for 3h; the eluted product was centrifuged and dried at 60°C to obtain the molecularly imprinted MOFs catalyst material. No template molecules are added during the preparation of non-imprinted MOFs catalyst materials (NIP-MOFs), and the rest of the operations are consistent with the preparation process of molecularly imprinted MOFs catalyst materials.

[0036] It can be seen from the electron microscope images that the molecularly imprinted MOFs catalyst material pr...

Embodiment 2

[0037] Example 2: Put sulfamethazine, terephthalic acid and ferric nitrate at a molar ratio of 2:5:2 in a 50 mL Erlenmeyer flask filled with 15 mL of water, and ultrasonically dissolve them completely. The mixture was placed in a 25mL hydrothermal reactor and reacted at 150°C for 12h. After cooling to room temperature, centrifuge at 10000 rpm for 10 min to collect the solid product in the solution. Then the solid product was eluted with methanol at 50°C for 3 times with stirring and elution for 3 hours each time; the eluted product was centrifuged and dried at 80°C, and molecularly imprinted MOFs catalyst materials could also be obtained. No template molecules are added during the preparation of non-imprinted MOFs catalyst materials (NIP-MOFs), and the rest of the operations are consistent with the preparation process of molecularly imprinted MOFs catalyst materials.

Embodiment 3

[0038] Embodiment 3: be that sulfamethoxazole, 2-aminoterephthalic acid and ferric chloride are placed in the 50mL Erlenmeyer flask that fills 15mL N-N dimethylformamide that mol ratio is 4:2:2, ultrasonic Let it dissolve completely. The mixture was placed in a 25mL hydrothermal reactor and reacted at 130°C for 20h. After cooling to room temperature, centrifuge at 10000 rpm for 10 min to collect the solid product in the solution. Then the solid product was extracted and eluted twice with acetone at 90°C for 12 hours each time by Soxhlet extraction; the eluted product was centrifuged and dried at 70°C to obtain the molecularly imprinted MOFs catalyst material. No template molecules are added during the preparation of non-imprinted MOFs catalyst materials (NIP-MOFs), and the rest of the operations are consistent with the preparation process of molecularly imprinted MOFs catalyst materials.

[0039] Application examples of molecularly imprinted MOFs catalyst degrading sulfonami...

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Abstract

The invention discloses a molecular imprinting type MOFs catalyst and preparation and application thereof in specific catalytic degradation of antibiotics, and relates to the technical field of new materials. The preparation method comprises the following steps: dissolving ferric salt, a template agent and an organic ligand to obtain a mixed solution, the template agent being an antibiotic molecule; transferring the mixed solution into a hydrothermal reaction device for hydrothermal reaction, eluting precipitates obtained by the hydrothermal reaction to elute the template agent to form molecularly imprinted holes, and drying in vacuum to obtain the molecular imprinting type MOFs catalyst. According to the prepared catalyst material, the advantages of molecular imprinting specific recognition and the characteristic of high adsorption capacity of MOFs materials are effectively combined, and specific recognition and high-capacity adsorption of low-concentration antibiotic pollutants in acomplex system and selective catalytic degradation of the antibiotic pollutants are achieved.

Description

technical field [0001] The present invention relates to the field of new materials, more specifically, to a molecularly imprinted MOFs catalyst and its preparation and specific catalytic degradation of antibiotics, especially to the preparation and application of a molecularly imprinted MOFs catalyst that specifically catalyzes the degradation of typical antibiotic pollutants. application. Background technique [0002] In recent years, the abuse of antibiotics and the emergence of a large number of drug-resistant pathogenic bacteria have aroused widespread public concern. Because antibiotics cannot be completely metabolized in humans and animals, most of them are excreted out of the body in the form of metabolites such as the original form or hydroxylation and cleavage through feces and urine (P.K.Jjemba, Excretion and Ecotoxicity of Pharmaceutical and Personal Care Products in the Environment , Ecotoxicol. Environ. Saf. 2006, 63, 113-130). Antibiotics are mainly polar com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J31/22B01J37/10C02F1/72C02F1/28C02F101/30
CPCB01J31/1691B01J37/10B01J2531/0213B01J2531/842C02F1/285C02F1/722C02F1/725C02F2101/30C08G83/008
Inventor 徐顺清沈先涛万丽斌陈志亮刘慧
Owner HUAZHONG UNIV OF SCI & TECH
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