Method for preparing bionic MOFs-based double-layer molecular imprinting nano composite membrane based on double continuous imprinting system and application of bionic MOFs-based double-layer molecular imprinting nano composite membrane

A nanocomposite and molecularly imprinted technology, applied in chemical instruments and methods, membrane technology, semipermeable membrane separation, etc., can solve the problems of low crystallization/nucleation efficiency, poor connection stability, etc., and achieve selective permeability and flux , Solve poor stability, solve the effect of uneven distribution

Active Publication Date: 2021-09-17
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most MOF materials cannot provide additional linking groups to form strong bonds with the base film, resulting in poor connection stability and low crystallization / nucleation efficiency.

Method used

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  • Method for preparing bionic MOFs-based double-layer molecular imprinting nano composite membrane based on double continuous imprinting system and application of bionic MOFs-based double-layer molecular imprinting nano composite membrane
  • Method for preparing bionic MOFs-based double-layer molecular imprinting nano composite membrane based on double continuous imprinting system and application of bionic MOFs-based double-layer molecular imprinting nano composite membrane
  • Method for preparing bionic MOFs-based double-layer molecular imprinting nano composite membrane based on double continuous imprinting system and application of bionic MOFs-based double-layer molecular imprinting nano composite membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] S1. Preparation of UiO-66 particles:

[0062] Dissolve 0.75g of zirconium chloride in an autoclave containing a mixed solution of 5.5mL of acetic acid and 80mL of dimethylformamide. After mixing well, add 0.53g of terephthalic acid, and ultrasonically treat the resulting mixed solution until it is completely dissolved. Finally, Add 0.24ml of deionized water and seal the autoclave; heat it at 120°C for 12h, after the reaction is over, wash the obtained solid powder with dimethylformamide and ethanol several times respectively, and add the obtained solid powder to a container containing 50ml of ethanol in a reaction kettle, and heated at 80°C for 8h, and dried the final product in a vacuum oven to obtain UiO-66 particles.

[0063] S2. Preparation of polydopamine-based imprinted UiO-66:

[0064] Dissolve 0.1211g tris(hydroxymethyl)aminomethane hydrochloride and 0.2g dopamine hydrochloride in 100mL deionized water to obtain a mixed solution, adjust the pH value of the solu...

Embodiment 2

[0085] S1. Preparation of UiO-66 particles:

[0086] Dissolve 0.75g of zirconium chloride in an autoclave containing a mixed solution of 5.5mL of acetic acid and 80mL of dimethylformamide. After mixing well, add 0.53g of terephthalic acid, and ultrasonically treat the resulting mixed solution until it is completely dissolved. Finally, Add 0.24 ml of deionized water and seal the autoclave. Heat it at 120°C for 12 hours. After the reaction, wash the obtained solid powder with dimethylformamide and ethanol several times respectively, add the obtained solid powder into a reaction kettle containing 50ml of ethanol, and heat at 80°C 8h, the final product was dried in a vacuum oven to obtain UiO-66 particles.

[0087] S2. Preparation of polydopamine-based imprinted UiO-66:

[0088] Dissolve 0.1211g tris(hydroxymethyl)aminomethane hydrochloride and 0.2g dopamine hydrochloride in 100mL deionized water to obtain a mixed solution, adjust the pH value of the solution to 8.5, add 0.5g Ui...

Embodiment 3

[0108] S1. Preparation of UiO-66 particles:

[0109] Dissolve 0.75g of zirconium chloride in an autoclave containing a mixed solution of 5.5mL of acetic acid and 80mL of dimethylformamide. After mixing well, add 0.53g of terephthalic acid, and ultrasonically treat the resulting mixed solution until it is completely dissolved. Finally, Add 0.24 ml of deionized water and seal the autoclave. Heat it at 120°C for 12 hours. After the reaction, wash the obtained solid powder with dimethylformamide and ethanol several times respectively, add the obtained solid powder into a reaction kettle containing 50ml of ethanol, and heat at 80°C 8h, the final product was dried in a vacuum oven to obtain UiO-66 particles.

[0110] S2. Preparation of polydopamine-based imprinted UiO-66:

[0111] Dissolve 0.1211g tris(hydroxymethyl)aminomethane hydrochloride and 0.2g dopamine hydrochloride in 100mL deionized water to obtain a mixed solution, adjust the pH value of the solution to 8.5, add 0.5g Ui...

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Abstract

The invention belongs to the technical field of functional material preparation, and relates to a method for preparing a bionic MOFs-based double-layer molecular imprinting nano composite membrane based on a double continuous imprinting system. The method comprises the following steps: firstly, synthesizing UiO-66 particles, preparing poly-dopamine-based imprinting UiO-66 by using a dopamine self-polymerization-composite imprinting technology and taking tetracycline as a template molecule, and preparing a UiO-66-based nano-composite imprinting membrane by using the poly-dopamine-based imprinting UiO-66 as a membrane loading material and combining a phase inversion means; finally, taking tetracycline as a template molecule, aminopropyltriethoxysilane and tetraethyl orthosilicate as a functional monomer and a cross-linking agent, and preparing the bionic MOFs-based double-layer molecular imprinting nano composite membrane on the basis of a sol-gel imprinting method. According to the prepared composite membrane, the defects that an existing tetracycline molecular imprinting polymer is difficult to recycle, prone to secondary pollution and the like are overcome, and the application field of membrane separation materials is widened.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a preparation method and selective separation application of a bionic MOFs-based double-layer molecularly imprinted nanocomposite membrane based on a double continuous imprinting system. Background technique [0002] The composition of antibiotics is very complex, containing a variety of refractory components, which are very difficult to remove in the water environment. Therefore, there is no particularly effective method for the technology and method of antibiotic treatment at present. Therefore, traditional organic sewage treatment methods are still used, such as biological treatment, adsorption and advanced oxidation methods. Among them, tetracycline antibiotics are a class of broad-spectrum antibiotics produced by actinomycetes, which can be used to prevent and treat animal diseases, and are widely used pharmaceutical additives in my c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D67/00B01J20/26B01J20/28B01J20/30C02F1/44C02F1/28C08G83/00C08G73/06C02F101/30
CPCB01D69/12B01D67/0032B01J20/268B01J20/28033B01J20/3057C02F1/44C02F1/288C08G83/008C08G73/0672C02F2101/30
Inventor 吴易霖严铭吕鹏刘馨琳林榕鑫马发光
Owner JIANGSU UNIV
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