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A preparation method and application of a photoresponsive imprinted material based on magnetic iron ferric oxide nanoparticles

A technology of ferric tetroxide and nanoparticles, applied in chemical instruments and methods, analytical materials, material separation, etc., can solve the problem of difficulty in directly coating the molecularly imprinted polymer layer, achieve good light response performance, increase specificity. Adsorption site, the effect of improving the adsorption effect

Active Publication Date: 2022-05-20
JIANGSU UNIV
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  • Summary
  • 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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  • A preparation method and application of a photoresponsive imprinted material based on magnetic iron ferric oxide nanoparticles
  • A preparation method and application of a photoresponsive imprinted material based on magnetic iron ferric oxide nanoparticles
  • A preparation method and application of a photoresponsive imprinted material based on magnetic iron ferric 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 photoresponsive molecular imprinted material based on magnetic iron ferric oxide nanoparticles; the steps are as follows: firstly prepare ferric iron tetroxide nanoparticles and a photoresponsive functional monomer MAPASA 1. Synthesize silica-coated iron tetroxide nanospheres, and then modify the chemical double bond of silica-coated iron tetroxide nanospheres; finally obtain a photoresponsive imprinted material based on magnetic nanospheres; Responsive imprinted materials can solve the problem of low efficiency in releasing and enriching target molecules; the imprinted material has an obvious core-shell structure consistent with the goal of the invention; at the same time, the present invention combines the performance of molecularly imprinted materials and light-responsive smart materials, successfully The application of the high-efficiency 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 Patents(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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