RAFT (Reversible addition-fragmentation chain transfer) polymerization preparation method of magnetic mesoporous molecular imprinted hybrid silicon spheres

A technology of mesoporous silicon spheres and molecular imprinting, applied in chemical instruments and methods, other chemical processes, magnetic field/electric field water/sewage treatment, etc., can solve the problems of laborious, low removal efficiency, time-consuming, etc., and achieve easy implementation and improved use efficiency , the effect of easy separation

Inactive Publication Date: 2013-03-13
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of time-consuming, laborious and low removal efficiency in the traditional method of removing alkylphenol endocrine disruptors, provide a R

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  • RAFT (Reversible addition-fragmentation chain transfer) polymerization preparation method of magnetic mesoporous molecular imprinted hybrid silicon spheres
  • RAFT (Reversible addition-fragmentation chain transfer) polymerization preparation method of magnetic mesoporous molecular imprinted hybrid silicon spheres
  • RAFT (Reversible addition-fragmentation chain transfer) polymerization preparation method of magnetic mesoporous molecular imprinted hybrid silicon spheres

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[0024] Examples:

[0025] A method for preparing magnetic mesoporous molecularly imprinted hybrid silica balls by RAFT polymerization. First, Fe is prepared by solvothermal method. 3 O 4 Magnetic microspheres, then sol-gel method in Fe 3 O 4 The surface of the magnetic microspheres is coated with mesoporous silica to obtain magnetic mesoporous silicon balls. Finally, the RAFT molecular imprinting technique is used to synthesize the magnetic mesoporous molecularly imprinted hybrid silicon sphere on the surface of the magnetic mesoporous silicon sphere, including the following steps:

[0026] 1) Fe 3 O 4 Synthesis and preparation of microspheres

[0027] Synthesis of Fe by solvothermal method 3 O 4 Microspheres: add 1mmol FeCl 3 ·6H 2 O was dissolved in 40ml ethylene glycol to obtain a yellow transparent solution. 3mmol of anhydrous sodium acetate was added to the above solution, and after magnetic stirring for 30 minutes, the solution was transferred into a 50ml stainless steel react...

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Abstract

The invention relates to a preparation method of magnetic mesoporous molecular imprinted hybrid silicon spheres. The preparation method comprises the following steps: firstly preparing Fe3O4 magnetic microspheres by adopting a solvothermal method, then coating mesoporous silica on the surfaces of the Fe3O4 magnetic microspheres through a sol-gel method and finally synthesizing the magnetic mesoporous molecular imprinted hybrid silicon spheres on the surfaces of the magnetic mesoporous silicon spheres by utilizing an RAFT (reversible addition-fragmentation chain transfer) molecular imprinting technology. The prepared magnetic mesoporous molecular imprinted hybrid silicon spheres can be used for selectively removing alkylphenol in drinking water. The preparation method disclosed by the invention has the advantages that the preparation method of the magnetic mesoporous molecular imprinted hybrid silicon spheres is reasonable in process and easy to implement; when the materials are used for removing alkylphenol type endocrine disruptors, the materials have good chemical stability and reusability and are easy to realize active adsorption, identification and separation against the alkylphenol; and according to the preparation method, the properties of magnetic mesoporous microspheres and a molecular imprinted polymer can be combined into a whole, the using efficiency of the molecular imprinting technology can be greatly improved and the range of molecular imprinting applications can be further expanded.

Description

【Technical field】 [0001] The invention relates to the preparation of molecularly imprinted hybrid materials, in particular to a RAFT polymerization preparation method of magnetic mesoporous molecularly imprinted hybrid silicon spheres. 【Background technique】 [0002] Since the 1990s, with the continuous growth and rapid development of industrial production, drinking water safety has been widely valued by people. In recent years, major drinking water sources in our country have been polluted by industrial wastewater to varying degrees, which poses a serious threat to people's health and the safety of urban water supply systems. At present, conventional removal methods and detection technologies can be used to control and detect organic matter and toxic substances. There are certain limitations. [0003] Molecular imprinting technology is developed in recent decades, which belongs to the category of supramolecular chemistry polymer synthesis technology. Its core is to prepa...

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Application Information

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IPC IPC(8): C08F292/00C08F212/36C08F220/56C08F2/38B01J20/26B01J20/30C02F1/28C02F1/48
Inventor 李颖黄艳凤刘辉杨永强张蕊
Owner TIANJIN POLYTECHNIC UNIV
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