Preparation method and application of photo-responsive imprinted material based on magnetic ferroferric oxide nanoparticles

A technology of iron tetroxide and nanoparticles, which is applied in chemical instruments and methods, material separation, analysis of materials, etc., can solve the problem of difficulty in directly coating a molecularly imprinted polymer layer, etc., and achieve good light response performance and good stability. the effect of increasing specific adsorption sites

Active Publication Date: 2021-02-02
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the deficiencies in the prior art, the present invention aims to solve one of the problems; the present invention provides a method for preparing a molecularly imprinted polymer material based on silica-coated iron ferric oxide nanoparticles, which solves the problem of the surface of the matrix material, It is difficult to directly coat the molecularly imprinted polymer layer, and at the same time realize the sensitive detection of dibutyl phthalate in liquor

Method used

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  • Preparation method and application of photo-responsive imprinted material based on magnetic ferroferric oxide nanoparticles
  • Preparation method and application of photo-responsive imprinted material based on magnetic ferroferric oxide nanoparticles
  • Preparation method and application of photo-responsive imprinted material based on magnetic ferroferric oxide nanoparticles

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Embodiment 1

[0048] Step (1) synthesis of p-hydroxyazobenzenesulfonic acid (MAPASA): add 12g p-aminobenzenesulfonic acid successively in there-necked flask, 10g K 2 CO 3 and water, stirring to dissolve completely. Placed in a low-temperature constant temperature water tank at -6°C, mechanically stirred, and 8g NaNO 2 Dissolve in 10mL of water, slowly drop into the three-necked flask, then slowly add 10mL of hydrochloric acid dropwise into the there-necked flask, and keep the temperature at 0°C for 0.5h. (Record the reaction solution as A) Add 7g phenol, 17g K 2 CO 3 and 10 mL of distilled water (record the reaction solution as B). Put it in a low-temperature constant temperature water tank, turn on the mechanical stirring, slowly add the reaction liquid A to the liquid B dropwise, maintain a suitable temperature, and continue to stir for 2 hours. After the reaction is completed, the temperature is naturally raised to room temperature, the mixed solution is adjusted to pH=2 with HCl, f...

Embodiment 2

[0056] Step (1), the synthesis of p-hydroxyazobenzenesulfonic acid (MAPASA): in there-necked flask, add 14g p-aminobenzenesulfonic acid successively, 11g K 2 CO 3 and water, stirred to dissolve completely; placed in a low-temperature constant temperature water tank at -5°C, mechanically stirred, and 8.3g NaNO 2Dissolve in 15mL of water, slowly drop into the three-necked bottle, then slowly add 15mL of hydrochloric acid dropwise into the three-necked bottle, and keep the temperature at 3°C ​​for 1h. (Record the reaction solution as A) Add 8g phenol, 18g K 2 CO 3 Mixed solution with 15mL distilled water (record the reaction solution as B); place it in a low-temperature constant temperature water tank, turn on the mechanical stirring, slowly add the reaction solution A to the solution B, maintain a suitable temperature, and continue to stir for 2.5h. After the reaction is completed, the temperature is naturally raised to room temperature, the mixed solution is adjusted to pH =...

Embodiment 3

[0064] Step (1), the synthesis of p-hydroxyazobenzenesulfonic acid (MAPASA): in there-necked flask, add 15g p-aminobenzenesulfonic acid successively, 12g K 2 CO 3 and water, stirring to dissolve completely. Placed in a low-temperature constant temperature water tank at -4°C, mechanically stirred, and 9g NaNO 2 Dissolve in 20mL of water, slowly drop into the three-necked bottle, then slowly add 20mL of hydrochloric acid dropwise into the there-necked bottle, and keep the temperature at 10°C for 2h. (Record the reaction solution as A) Add 9g phenol, 19g K 2 CO 3 and 20mL of distilled water (denote the reaction solution as B); place it in a low-temperature constant temperature water tank, turn on the mechanical stirring, slowly add the reaction solution A to the B solution, maintain a suitable temperature, and continue to stir for 3h; after the reaction is completed, Let the temperature rise to room temperature naturally, adjust the pH of the mixture to 4 with HCl, filter, wa...

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Abstract

The invention belongs to the technical field of detection material preparation, and relates to a preparation method and application of a photo-responsive molecularly-imprinted material based on magnetic ferroferric oxide nanoparticles. The preparation method comprises the following steps: firstly, preparing the ferroferric oxide nanoparticles and a photoresponse functional monomer MAPASA, synthesizing silicon dioxide-coated ferroferric oxide nanospheres, and then carrying out chemical double bond modification on the silicon dioxide-coated ferroferric oxide nanospheres so as to finally obtain the photo-responsive imprinted material based on the magnetic nanoparticles. The photo-responsive imprinted material prepared by the invention can solve the problem of low efficiency of releasing and enriching target molecules; the imprinted material has an obvious core-shell structure consistent with the target of the invention; and meanwhile, the performance of the molecularly imprinted materialand the performance of a photo-responsive intelligent material are combined, and the imprinted material is successfully applied to efficient detection of dibutyl phthalate.

Description

technical field [0001] The invention belongs to the technical field of detection material preparation, and in particular relates to a preparation method and application of a photoresponsive molecular imprinted material based on magnetic iron ferric oxide nanoparticles. Background technique [0002] Dibutyl phthalate (DBP), one of the most widely used plasticizers, is easily released from plastic products and enters the environment through leaching, evaporation and abrasion. [0003] DBP in the environment has adverse effects on the central nervous system and embryonic development. The research results of some scholars have shown that DBP changes the expression of zebrafish cardiac transcription factors NKX2. The behavioral analysis and histopathological evaluation showed that high doses (25 or 125 mg / kg / d) of DBP could cause oxidative stress and anxiety-like behaviors in mice. The effect of DBP on oocyte maturation, the results showed that DBP can significantly reduce the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F222/14C08J9/26B01J20/26B01J20/30G01N30/06C08L51/10
CPCC08F292/00C08J9/26B01J20/261B01J20/268G01N30/06C08J2351/10C08J2201/0422G01N2030/062C08F222/102
Inventor 黄卫红蒋鹏飞倪晓霓殷锡峰张利明赵珊周恒灯徐婉珍
Owner JIANGSU UNIV
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