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Preparation method and application of magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nano composite material

A nanocomposite material and molecular imprinting technology, which is applied in the field of preparation of magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nanocomposite materials, can solve the problems of easy embedding of recognition sites, affecting material adsorption capacity and adsorption rate, etc. , to achieve the effect of simplifying the pre-treatment process, reducing the cost of testing, and facilitating recycling

Pending Publication Date: 2020-03-27
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer obtained by the traditional bulk polymerization method presents a dense block, and the recognition site is easily embedded, which seriously affects the adsorption capacity and adsorption rate of the material.

Method used

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  • Preparation method and application of magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nano composite material
  • Preparation method and application of magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nano composite material
  • Preparation method and application of magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nano composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for preparing a magnetic MOF-based bisphenol A molecularly imprinted highly selective nanocomposite material, the steps of which are:

[0040] (1) Add 10 mmol FeCl 3 , 2.5 mmol of sodium citrate and 50 mmol of sodium acetate were added to 100 mL of ethylene glycol solution, dissolved and mixed evenly, then transferred to a high-temperature reaction kettle, kept at 200°C for 10 hours, cooled to room temperature after the reaction, and washed with pure water and anhydrous water respectively. Washed with ethanol, the resulting black product Fe 3 o 4 Particles are dry and ready for use;

[0041] (2) Add 200 mg Fe 3 o 4 The particles were ultrasonically dispersed in 50 mL of 50% ethanol solution, 2 mmol of zinc nitrate and 30 mmol of 2-methylimidazole were added, ultrasonically reacted at room temperature for 10 min, washed with ethanol and water, magnetically separated and dried to obtain the magnetic MOF material Fe 3 o 4 @ZIF-8, disperse it in ethanol solut...

Embodiment 2

[0044] A method for preparing a magnetic MOF-based bisphenol A molecularly imprinted highly selective nanocomposite material, the steps of which are:

[0045] (1) Add 10 mmol FeCl 3 , 2.5 mmol of sodium citrate and 50 mmol of sodium acetate were added to 100 mL of ethylene glycol solution, dissolved and mixed evenly, then transferred to a high-temperature reaction kettle, kept at 200°C for 10 hours, cooled to room temperature after the reaction, and washed with pure water and anhydrous water respectively. Washed with ethanol, the resulting black product Fe 3 o 4 Particles are dry and ready for use;

[0046] (2) Add 200 mg Fe 3 o 4 The particles were ultrasonically dispersed in 50 mL of 50% ethanol solution, 2 mmol of zinc nitrate and 30 mmol of 2-methylimidazole were added, ultrasonically reacted at room temperature for 10 min, washed with ethanol and water, magnetically separated and dried to obtain the magnetic MOF material Fe 3 o 4 @ZIF-8, dispersed in ethanol solutio...

Embodiment 3

[0051] A method for preparing a magnetic MOF-based bisphenol A molecularly imprinted highly selective nanocomposite material, the steps of which are:

[0052] (1) Add 10 mmol FeCl 3 , 2.5 mmol of sodium citrate and 50 mmol of sodium acetate were added to 100 mL of ethylene glycol solution, dissolved and mixed evenly, then transferred to a high-temperature reaction kettle, kept at 200°C for 10 hours, cooled to room temperature after the reaction, and washed with pure water and anhydrous water respectively. Washed with ethanol, the resulting black product Fe 3 o 4 Particles are dry and ready for use;

[0053] (2) Add 200 mg Fe 3 o 4 The particles were ultrasonically dispersed in 50 mL of 50% ethanol solution, 2 mmol of zinc nitrate and 30 mmol of 2-methylimidazole were added, ultrasonically reacted at room temperature for 10 min, washed with ethanol and water, magnetically separated and dried to obtain the magnetic MOF material Fe 3 o 4 @ZIF-8, dispersed in ethanol solutio...

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Abstract

The invention belongs to the technical field of composite material preparation and food safety detection, and particularly relates to a preparation method and application of a magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nano composite material. The preparation method is realized through the following steps: (1) preparing magnetic Fe3O4 nanospheres; (2) preparing a magnetic MOF material Fe3O4 @ ZIF-8; and (3) preparing a magnetic MOF-based bisphenol A molecularly imprinted polymer. The material preparation method is simple and environment-friendly in synthesis and hasthe characteristics of high selectivity, high-efficiency adsorption separation, reusability and the like on a target object. The prepared material does not need pretreatment equipment and can be usedfor enriching and separating pollutant bisphenol A in a water environment and can also be combined with a conventional instrument to realize high-selectivity and high-sensitivity analysis and detection of bisphenol A in the environment or food and the detection sensitivity of bisphenol A is improved. The material can be repeatedly used so that the detection cost is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation and food safety detection, and specifically relates to a preparation method and application of a magnetic MOF-based bisphenol A molecularly imprinted high-selectivity nanocomposite material. Background technique [0002] Bisphenol A is an important organic chemical raw material, widely used in plastics, resins, antioxidants, flame retardants and other products, of which about 5% of BPA products are used as food packaging materials, large-scale production and wide use of BPA products In the process, BPA inevitably migrates to the environment and food. Studies have confirmed that BPA is an endocrine disruptor with typical estrogen-like effects. Even low-dose exposure will have a greater impact on sensitive people, causing damage to the reproductive system and nervous system, and also has certain embryo toxicity. and teratogenicity. In order to accurately monitor and evaluate...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/281G01N30/02G01N30/74G01N30/86B01J20/30
CPCB01J20/281B01J20/28009B01J20/268G01N30/02G01N30/74G01N30/8637
Inventor 徐龙华汪海洋徐志祥
Owner SHANDONG AGRICULTURAL UNIVERSITY
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