A preparation method of boron-affinity double-recognition molecularly imprinted material

A dual recognition, 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 process, and fast adsorption kinetics Effect

Inactive Publication Date: 2017-10-20
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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  • A preparation method of boron-affinity double-recognition molecularly imprinted material
  • A preparation method of boron-affinity double-recognition molecularly imprinted material
  • A preparation method of boron-affinity double-recognition molecularly imprinted material

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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. After that, 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, 30 mL of hydrogen peroxide (30%) was added to the reaction system for 15 min. After that, 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 a...

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, 30 mL of hydrogen peroxide (30%) was added to the reaction system for 15 min. After that, 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...

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Abstract

The invention relates to a method for preparing a boron-affinity double-recognition molecularly imprinted material, which belongs to the technical field of environmental functional material preparation; the invention firstly modifies natural flake graphite powder to form graphene oxide, and then undergoes atom transfer radical polymerization Graphene oxide (GO) was used as the matrix material to prepare imprinted polymers (DR‑MIPs) with double recognition molecular imprinting function; after a series of treatments, the adsorbent was obtained, and the adsorbent was used for the selectivity of luteolin in aqueous solution Recognition and separation: The boron-affinity double-recognition molecularly imprinted material prepared by the present invention has better thermal stability, larger surface area, higher adsorption capacity, has acid-base effect and can reversibly absorb / release with pH, ​​and has Remarkable 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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Patent Type & Authority Patents(China)
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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