Preparation method and application of a light-responsive smart imprinted mesoporous material

A mesoporous material, light-responsive technology, applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problems of uncompetitive adsorption capacity, limited commercial application, etc., to solve the problem of difficult elution and repeated use. The effect of many times and significant separation effect

Inactive Publication Date: 2018-06-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, however, they are not competitive in adsorption capacity, which will further limit their commercial applications

Method used

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  • Preparation method and application of a light-responsive smart imprinted mesoporous material
  • Preparation method and application of a light-responsive smart imprinted mesoporous material
  • Preparation method and application of a light-responsive smart imprinted mesoporous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of photosensitive monomer MPABA

[0032] Take 2.75g of 4-aminobenzoic acid and dissolve in 20mL of 5M concentrated hydrochloric acid, then add 10mL of a solution containing 1.6g of sodium nitrite into it, control the temperature with an ice-water bath, and continue stirring for 1h after the yellow color appears. The resulting solution was then added to 50 mL of a solution containing 1.89 g of phenol and 6 g of sodium hydroxide, placed in an ice-water bath for 2 h, and then diluted with 100 mL of deionized water. Add an appropriate amount of sodium hydroxide and concentrated hydrochloric acid to wash and remove impurities, then wash with excess ethyl acetate three times, dry and spin evaporate. The crude product was recrystallized to obtain 4-[(4-hydroxy)phenylazo]benzoic acid (HPABA).

[0033] 2.5 g of the HPABA synthesized above, 0.15 g of dimethylaminopyridine, 3.2 g of methacrylic anhydride and 1.386 mL of triethylamine were dissolved in 150 mL of TH...

Embodiment 2

[0051] (1) Preparation of photoresponsive imprinted mesoporous materials

[0052] The synthesis of the photosensitive monomer MPABA and the modification of the matrix material are as described in Example 1.

[0053] First, 22.8 mg of bisphenol A and 74.4 mg of MPABA were mixed in 10 mL of methanol / DMSO (4:1, v / v) for self-assembly, and placed in a dark place for 12 hours. Then take 50mg SBA-15-MPS and disperse in 30mL methanol solution, add self-assembly solution and 198mg EGDMA. Then the mixture was placed in a water bath, heated to 65°C, and 10 mg of AIBN was added, deoxygenated with nitrogen for 30 min, sealed, and magnetically stirred for 24 h in the dark. After the polymerization reaction, the polymer was collected by filtration, washed three times with methanol and DMSO successively, and dried in vacuum to constant weight for later use.

[0054] The above-mentioned dried polymer was dispersed in 50 mL DMSO, irradiated with ultraviolet light (365 nm) for 2 h under stirr...

Embodiment 3

[0060] (1) Preparation of photoresponsive imprinted mesoporous materials

[0061] The synthesis of the photosensitive monomer MPABA and the modification of the matrix material are as described in Example 1.

[0062] First, 11.4 mg of bisphenol A and 37.2 mg of MPABA were mixed in 10 mL of methanol / DMSO (4:1, v / v) for self-assembly, and placed in a dark place for 12 hours. Then take 50mg SBA-15-MPS and disperse in 30mL methanol solution, add self-assembly solution and 50mg EGDMA. Then the mixture was placed in a water bath, heated to 65°C, and 5 mg of AIBN was added, deoxygenated with nitrogen for 30 min, sealed, and magnetically stirred for 24 h in the dark. After the polymerization reaction, the polymer was collected by filtration, washed three times with methanol and DMSO successively, and dried in vacuum to constant weight for later use.

[0063] The above-mentioned dried polymer was dispersed in 50 mL DMSO, irradiated with ultraviolet light (365 nm) for 2 h under stirrin...

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Abstract

The invention provides a preparation method and application of a light-responsive intelligent imprinted mesoporous material, the method comprising the steps of preparing 4-[4-(methacryloyloxy)phenylazo]benzoic acid and preparing vinyl The step of the functionalized mesoporous material SBA‑15‑MPS also includes the step of preparing the photoresponsive imprinted mesoporous material. The template molecules and MPABA were protected from light in a methanol / DMSO mixed solution with a volume ratio of 4:1, and SBA-15-MPS was dispersed in methanol and mixed; after the above two liquids were mixed, a cross-linking agent was added and placed In a water bath, heat up to a certain temperature, add the initiator and mix well, and finally seal it with nitrogen deoxygenation, and react with magnetic stirring under dark conditions; after the reaction, collect the polymer, wash, vacuum dry, and then perform alternating light irradiation treatment, that is product available. This material can selectively enrich and separate targets in complex environments, and is prepared based on mesoporous materials, endowing it with a larger adsorption capacity than other photoresponsive imprinted materials.

Description

technical field [0001] The invention relates to a preparation method and application of a light-responsive intelligent imprinted mesoporous material, belonging to the fields of material preparation, separation technology and environmental treatment. Background technique [0002] At present, due to the impact of urbanization and rapid industrialization, the problem of environmental pollution is becoming more and more prominent. Providing clean air and pure drinking water is a great challenge for the huge world population. Bisphenol A (BPA), as a known endocrine disrupting chemical (EDC), has been found in food, beverages and surface water, seriously threatening the reproductive health and fertility of aquatic animals and humans. For this reason, in order to effectively remove bisphenol A in environmental pollutants, a lot of intensive researches have been carried out. Among them, adsorption has been found to be an efficient and widely used method. In practice, however, BPA ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/34C08F222/14C08J9/26C08J3/28B01J20/26B01J20/281B01J20/30C07C39/16C07C37/82
Inventor 刘燕钟国星韦月梅刘方方
Owner JIANGSU UNIV
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