Boric acid type magnetic COFs (covalent organic frameworks) material, preparation method and application

A magnetic and boric acid technology, applied in the field of separation technology and functional material preparation, to achieve the effects of good selectivity, large adsorption capacity and improved separation efficiency
CN109261128AActive Publication Date: 2019-01-25NORTHWEST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWEST UNIV
Publication Date
2019-01-25

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Abstract

The invention discloses a boric acid type magnetic COFs (covalent organic frameworks) material, a preparation method and application. The boric acid type magnetic COFs material comprises nanoparticleswith core-shell structures, wherein a core is an Fe3O4 nanoparticle; a shell is COFs; the COFs are modified by boric acid groups, so as to obtain the boric acid type magnetic COFs material. The preparation method comprises the following steps of synthesizing the core-shell Fe3O4@TpBD(NO2)2 nanoparticle by a solvent thermal method via in situ growth, and modifying the function groups on a surfaceby a monomer containing phenylboronic acid groups, so as to obtain the novel boric acid type magnetic COFs material. The separation material has the characteristics that the adsorption capacity is high, and the stability and selectivity are good;material, can be used for the separation and enrichment and content analysis of a trace monoamine type neurotransmitter substance in urine, the interference of a complicated matrix can be eliminated, and the separation and enrichment efficiency is improved.
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Description

technical field

[0001] The invention belongs to the field of separation technology and preparation of functional materials, and relates to a boric acid type magnetic COFs material, a preparation method and an application thereof. Background technique

[0002] Covalent organic frameworks (COFs) are emerging porous organic materials, which have many advantages such as permanent porosity, low density, large specific surface area, good stability, tunable pore size and structure, etc. These excellent properties make COFs materials have excellent potential in various application fields.

[0003] Magnetic solid-phase extraction (MSPE) based on magnetic or magnetically modified adsorbents has been developed into one of the promising techniques in enrichment and separation. The development of new functionalized and efficient adsorbents is the key to MSPE technology. It is of great significance to introduce COFs into magnetic nanoparticles to construct new nanocomposites with increa...

Claims

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