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Preparation method of boron affiliated dual recognition molecularly imprinted material

A dual recognition and molecular imprinting technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor method selectivity and low product purity, achieve good acid response, solve complex elution processes, and high adsorption capacity. Effect

Inactive Publication Date: 2016-01-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have their own unique advantages, they also have their limitations. The common defects are poor selectivity of the method and low purity of the product obtained.

Method used

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  • Preparation method of boron affiliated dual recognition molecularly imprinted material
  • Preparation method of boron affiliated dual recognition molecularly imprinted material
  • Preparation method of boron affiliated dual recognition molecularly imprinted material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of graphene oxide (GO)

[0043] 3g of graphite powder and 0.15g of sodium nitrate were added to 30mL of concentrated sulfuric acid and cooled to below 10°C. Secondly, 3g of potassium permanganate was added into the reaction system to stir at 35°C for 1 hour in a 250ml three-neck flask. Subsequently, 138 mL of distilled water was slowly added to the flask until the temperature reached 80 °C. Finally, 30 mL of hydrogen peroxide (30%) was added to the reaction system for 15 min. Afterwards, 200mL of concentrated hydrochloric acid (10%) was added to the mixture at room temperature and washed with distilled water several times, and finally dried at 60°C.

[0044] (2) Preparation of graphene oxide dual surface imprinted nanoparticles (DR-MIPs)

[0045] Wrap the double recognition molecular imprinted layer on the surface of graphene oxide: 100mg graphene oxide (GO), 0.5mmol luteolin (LTL), 5mmol ethylene glycol dimethacrylate (EGDMA), 0.1mmola-methacrylic ac...

Embodiment 2

[0054] (1) Preparation of graphene oxide (GO)

[0055] 3g of graphite powder and 0.6g of sodium nitrate were added to 120mL of concentrated sulfuric acid and cooled to below 10°C. Secondly, 3g of potassium permanganate was added into the reaction system to stir at 35°C for 5 hours in a 250ml three-neck flask. Subsequently, 138 mL of distilled water was slowly added into the flask until the temperature reached 100 °C. Finally, 30mL hydrogen peroxide (30%) was added to the reaction system for 15min. Afterwards, 200mL of concentrated hydrochloric acid (10%) was added to the mixture at room temperature and washed with distilled water several times, and finally dried at 60°C.

[0056] (2) Preparation of graphene oxide dual surface imprinted nanoparticles (DR-MIPs)

[0057] Wrap the double recognition molecular imprinted layer on the surface of graphene oxide: 100mg graphene oxide (GO), 2mmol luteolin (LTL), 12mmol ethylene glycol dimethacrylate (EGDMA), 1mmola-methacrylic acid (...

Embodiment 3

[0061] (1) Preparation of graphene oxide (GO)

[0062] 3g of graphite powder and 0.5g of sodium nitrate were added to 69mL of concentrated sulfuric acid and cooled to below 10°C. Secondly, 3g of potassium permanganate was added into the reaction system to stir at 35°C for 2 hours in a 250ml three-neck flask. Subsequently, 138 mL of distilled water was slowly added to the flask until the temperature reached 98 °C. Finally, 30mL hydrogen peroxide (30%) was added to the reaction system for 15min. Afterwards, 200mL of concentrated hydrochloric acid (10%) was added to the mixture at room temperature and washed with distilled water several times, and finally dried at 60°C.

[0063] (2) Preparation of graphene oxide dual surface imprinted nanoparticles (DR-MIPs)

[0064] Wrap the double recognition molecular imprinted layer on the surface of graphene oxide: 100mg graphene oxide (GO), 1mmol luteolin (LTL), 8mmol ethylene glycol dimethacrylate (EGDMA), 0.5mmola-methacrylic acid ( M...

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Abstract

Belonging to the technical field of preparation of environment functional materials, the invention relates to a preparation method of a boron affiliated dual recognition molecularly imprinted material. The method includes: firstly modifying natural flake graphite powder to form graphene oxide, then taking graphene oxide (GO) as the matrix material to prepare an imprinted polymer (DR-MIPs) with dual recognition molecular imprinting function by atom transfer radical polymerization; and conducting a series of treatment to obtain an adsorbent, and applying the adsorbent to selective recognition and separation of luteolin in an aqueous solution. The boron affiliated dual recognition molecularly imprinted material prepared by the method provided by the invention has good thermal stability, large surface area, high adsorption capacity, the function of reversible adsorption / release of acid-base effect along with acidity and alkalinity, and significant LTL molecular recognition performance.

Description

technical field [0001] The invention relates to a preparation method of a boron-affinity double-recognition molecular imprinting material, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] Molecular imprinting is a technology for preparing three-dimensional cross-linked polymers with binding sites for predetermined recognition functions. The prepared molecularly imprinted polymers can selectively recognize template molecules and efficiently adsorb and separate them; surface molecular imprinting technology establishes molecular recognition sites On the surface of the matrix material, when molecularly imprinted polymers are used to adsorb and separate template molecules, the recognition sites based on these "memory" holes will specifically bind template molecules, thus showing a high degree of specific selectivity. It better solves some serious defects that still exist in the traditional molecular imprintin...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/281B01J20/30
Inventor 刘树成潘建明朱恒佳吴润润
Owner JIANGSU UNIV
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