Magnetic covalent organic framework nano material, preparation method and application
A covalent organic framework and nanomaterial technology, applied in the field of magnetic covalent organic framework nanomaterials and preparation, can solve problems such as human health risks, achieve excellent magnetic separation characteristics, simple and convenient operation, and high adsorption capacity
Active Publication Date: 2022-04-29
NORTHWEST UNIV
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Abstract
The invention discloses a magnetic covalent organic framework nano-material, a preparation method and application, firstly, magnetic Fe3O4 nano-particles are prepared, then the magnetic Fe3O4 nano-particles and a 2, 5-dihydroxy terephthalaldehyde solution are mixed, stirring is conducted for 1-3 h at the temperature of 30-65 DEG C, and Fe3O4 nano-particles modified for the first time are obtained; and mixing the Fe3O4 nanoparticles modified for the first time, 1, 3, 5-tris (4-aminophenyl) benzene and 2, 5-dihydroxy terephthalaldehyde in the most week, adding an acetic acid solution, and stirring and reacting at room temperature to obtain the magnetic covalent organic framework nano material Fe3O4 (at) COFs. The magnetic covalent organic framework nano-material prepared by the invention not only has the excellent properties of large specific surface area, rich adsorption sites and the like of a covalent organic framework, but also inherits the excellent magnetic separation characteristic of a magnetic material, so that the composite material has the characteristics of high adsorption and separation speed and high adsorption capacity, can be repeatedly used for more than 6 times, and has a wide application prospect. And the removal efficiency of ethyl carbamate can still reach 88% or above.
Application Domain
Component separationOther chemical processes +2
Technology Topic
BenzeneCovalent organic framework +15
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PUM
Property | Measurement | Unit |
Concentration | 3.0 ~ 8.0 | mol/l |
Particle size range | 10.0 ~ 240.0 | nm |
Aperture | 2.0 ~ 10.0 | nm |
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Classification and recommendation of technical efficacy words
- Many adsorption sites
- Large specific surface area