Preparation method of ionic liquid functionalized metal organic framework- molecularly imprinted composite material

A metal-organic framework and ionic liquid technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., to reduce costs, protect the ecological environment, and increase the selective recognition sites of imprinted polymers Effect

Inactive Publication Date: 2019-11-08
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the molecularly imprinted polymer prepared by t

Method used

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  • Preparation method of ionic liquid functionalized metal organic framework- molecularly imprinted composite material

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Experimental program
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Effect test

Embodiment 1

[0017] Accurately weigh 0.0625g of the template molecule sulfamethoxazole, 0.1g of the carrier UIO-66 and 0.2151g of the functional monomer bromide 1-allyl-3-vinylimidazole in 50mL of pure water solvent, seal and place in a 30°C water bath 180rpm vibration pre-polymerization for 4h, then add cross-linking agent N,N'-methylenebisacrylamide and initiator azobisisobutyronitrile, ultrasonic, nitrogen, seal, then oscillate polymerization in 60℃ water bath 300rpm for 20h, methanol After rinsing and drying, Soxhlet extraction with a mixture of methanol and acetic acid at a volume ratio of 9:1 for 48 hours, the product was rinsed with methanol and dried in vacuum at 60°C to obtain an imprinted polymer.

[0018] The preparation method of the non-imprinted polymer under corresponding conditions is the same as above, except that the template molecule sulfamethoxazole is not added.

Embodiment 2

[0020] Accurately weigh 0.0625g template molecule sulfamethoxazole, 0.1g carrier UIO-66 and 0.4302g functional monomer bromide 1-allyl-3-vinylimidazole in 50mL pure water solvent, seal and place in a 30°C water bath 180rpm vibration pre-polymerization for 6h, then add cross-linking agent N,N'-methylenebisacrylamide and initiator azobisisobutyronitrile, ultrasonic, nitrogen, seal, then shake polymerization in 60℃ water bath 300rpm for 30h, methanol After rinsing and drying, Soxhlet extraction with a mixture of methanol and acetic acid at a volume ratio of 9:1 for 48 hours, the product was rinsed with methanol and dried in vacuum at 60°C to obtain an imprinted polymer.

[0021] The preparation method of the non-imprinted polymer under corresponding conditions is the same as above, except that the template molecule sulfamethoxazole is not added.

Embodiment 3

[0023] Accurately weigh 0.0625g template molecule sulfamethoxazole, 0.1g carrier UIO-66-NH 2 and 0.2151g of functional monomer 1-allyl-3-vinylimidazole bromide in 50mL of pure water solvent, sealed and pre-polymerized in a 30°C water bath at 180rpm for 4h, then added the cross-linking agent N,N'- Methylbisacrylamide and initiator azobisisobutyronitrile, after ultrasonication, nitrogen gas, and sealing, shake and polymerize in a 60°C water bath at 300rpm for 24h, rinse with methanol and dry with a mixture of methanol and acetic acid at a volume ratio of 9:1. After extraction for 48 hours, the product was rinsed with methanol and then vacuum-dried at 60°C to obtain the imprinted polymer.

[0024] The preparation method of the non-imprinted polymer under corresponding conditions is the same as above, except that the template molecule sulfamethoxazole is not added.

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Abstract

The invention discloses a preparation method of an ionic liquid functionalized metal organic framework-molecularly imprinted composite material, belonging to the technical fields of analytical chemistry and pollutant analysis and detection. The key points of the preparation method are as follows: UIO-66 and/or UIO-66-NH2 are taken as carriers in pure water solvent, 1-allyl-3-vinyl imidazole bromide is taken as a functional monomer, sulfamethoxazole is taken as a template molecule, and a molecularly imprinted polymer is prepared through N, N'-methylene bisacrylamide crosslinking and azodiisobutyronitrile thermal initiation polymerization under nitrogen protection. The molecularly imprinted polymer prepared by the method has a large specific surface area, a plurality of adsorption binding sites, and three-dimensional holes which are highly matched with the template molecule sulfamethoxazole, can be used as a solid phase extraction adsorbent to separate and enrich trace sulfamethoxazole in the environment, and has wide commercial application prospects.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry and pollutant analysis and detection, and is mainly used for highly selective separation and enrichment of trace amounts of sulfamethoxazole in the environment, and specifically relates to an ionic liquid functionalized metal organic framework-molecular imprinted composite material Preparation. Background technique [0002] Sulfamethoxazole, a broad-spectrum antibacterial drug widely used in human medicine and veterinary medicine, has good therapeutic effects on diseases such as respiratory system infection, intestinal infection and local soft tissue infection. However, due to the wide application of sulfamethoxazole, it remains in a large amount of soil and water environments, and when humans ingest food containing residues of sulfamethoxazole, it accumulates in the human body for a long time, threatening human health. Therefore, more and more attention has been paid to the analysis...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C08F222/38C08F226/06C02F101/38
CPCB01J20/268C02F1/285C08F222/385C02F2101/40C08F226/06
Inventor 朱桂芬程国浩赵娟梁晓文王醒杨灿张耀宗樊静
Owner HENAN NORMAL UNIV
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