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Preparation method of magnetic temperature-sensitive surface strontium ion blotting adsorbent

An imprinted adsorption and temperature-sensitive technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of low adsorption capacity, poor rigidity, etc.

Inactive Publication Date: 2014-02-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on this, temperature-sensitive molecularly imprinted gels have been reported, but their poor rigidity and low adsorption capacity limit their practical application.
However, there are no reports on the establishment of temperature-sensitive imprinted polymers on the surface of mesoporous materials, especially on the surface of magnetic composite mesoporous materials.

Method used

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  • Preparation method of magnetic temperature-sensitive surface strontium ion blotting adsorbent
  • Preparation method of magnetic temperature-sensitive surface strontium ion blotting adsorbent

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Magnetic core Fe 3 o 4 preparation of

[0042] Weigh 0.675 g FeCl 3 ·6H 2 O was dissolved in 40 mL of ethylene glycol and stirred until a yellow homogeneous solution formed. Add 3.6 g of anhydrous sodium acetate (NaOAc) and 1.0 g of polyethylene glycol (PEG10000) to the above solution in turn, continue to stir for 30 min, then quickly transfer it to a 50 mL polytetrafluoroethylene autoclave, 200 o C for 8 h, cooled to room temperature, washed with ethanol, 60 o C dried overnight.

[0043] (2) Synthesis of PEI-SBA-15

[0044] Weigh 5.00 g of SBA-15 and 7 mL of γ-chloropropyltrimethoxysilane (CP) in 40 mL of xylene solution, slowly drop into 1.4 mL of deionized water, 80 o The reaction was carried out under the condition of C for 6 h, and the excess CP was washed with toluene to obtain the surface chloropropylated SBA-15 (CP-SBA-15). The prepared CP-SBA-15 (5.00 g) was added to 25 mL of 20% polyethyleneimine (PEI) aqueous solution, 90 o The reaction w...

Embodiment 2

[0055] (1) Magnetic core Fe 3 o 4 preparation of

[0056] Weigh 1.35 g FeCl 3 ·6H 2 O was dissolved in 40 mL of ethylene glycol and stirred until a yellow homogeneous solution formed. Add 3.6 g of anhydrous sodium acetate (NaOAc) and 1.0 g of polyethylene glycol (PEG10000) to the above solution in turn, continue to stir for 30 min, then quickly transfer it to a 50 mL polytetrafluoroethylene autoclave, 200 o C for 10 h, cooled to room temperature, washed with ethanol, 60 o C dried overnight.

[0057] (2) Synthesis of PEI-SBA-15

[0058] Weigh 5.00 g of SBA-15 and 14 mL of γ-chloropropyltrimethoxysilane (CP) in 40 mL of xylene solution, slowly drop into 2.0 mL of deionized water, 80 o The reaction was carried out under the condition of C for 6 h, and the excess CP was washed with toluene to obtain the surface chloropropylated SBA-15 (CP-SBA-15). The prepared CP-SBA-15 (5.00 g) was added to 50 mL of 20% polyethyleneimine (PEI) aqueous solution, 90 o The reaction ...

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Abstract

The invention relates to a preparation method of a magnetic temperature-sensitive surface strontium ion blotting adsorbent, and belongs to the technical field of the preparation of environmental function materials. The preparation method comprises the following steps: effectively combining Fe3O4 with aminated SBA-15 (PEI-SBA-15) Through a post grafting method to form Fe3O4@PEI-SBA-15, and carrying out vinyl modification of the Fe3O4@PEI-SBA-15 to obtain Fe3O4@PEI-SBA-15@MPS; and preparing the magnetic temperature-sensitive surface strontium ion blotting adsorbent by using the Fe3O4@PEI-SBA-15@MPS as a matrix and Sr (II) as a template. The adsorption performance of the adsorbent on the Sr (II) is investigated. The adsorbent has a substantial thermal stability, a substantial magnetic stability, a sensitive magnetic induction effect, a sensitive?thermal induction effect, a substantial temperature-dependent reversible adsorption / release function, and an obvious Sr (II) identification performance.

Description

Technical field [0001] The present invention involves a method of preparing a magnetic temperature -sensitive surface ionic seal adsorbent, which is the field of environmental functional materials preparation. Background technique [0002] Molecular printing technology is to prepare a polymer polymer synthesis technology that has a specific template molecule (ion, molecule, complex, macromoleum or microorganism) with a specific identification performance (specific selective performance).Object (MIPS).The MIPS internal distribution has a large number of template -molecules of imprinting cave. These acupoints and template molecules are highly matched in terms of space structure and binding site, so that the molecular seal polymer has a special combination of identification selectivity and excellent combination of template molecules for template moleculesFinity.When metal ions are used directly as template molecules, it can be specifically called ionic seal technology.Surface ion pr...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30
Inventor 刘燕陈瑞孟敏佳孟祥国宋志龙胡兆勇刘方方王娟
Owner JIANGSU UNIV
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