Modified MOF material and preparation method thereof

By introducing amine-based functional groups on the surface of MIL-101 (Cr), the modified MOF material NH2-MIL-101 (Cr) is formed, which solves the problem that the prior art is difficult to remove nanoplastic particles, and achieves efficient adsorption and removal of nanoplastic particles.

CN119708514APending Publication Date: 2025-03-28GUANGXI UNIV FOR NATITIES
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Patent Information

Application Number
CN202411624080.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Due to the water pollution caused by polystyrene nanoplastics, it is difficult for the prior art to effectively remove nanoplastic particles.

Method used

By introducing amine group (-NH2) functional groups on the surface of MIL-101 (Cr), the modified MOF material NH2-MIL-101 (Cr) is formed, and the three-dimensional network structure of the original MOF is retained and the amine group functional groups are introduced to enhance its adsorption performance.

Benefits of technology

This modified MOF material significantly improves the adsorption capacity of nanoplastic particles in aqueous solution, and solves the water pollution problem caused by polystyrene nanoplastics.

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Abstract

The invention relates to the technical field of solid adsorption and separation, in particular to a modified MOF (Metal Organic Framework) material and a preparation method thereof, the chemical formula of the modified MOF material is C24H17Cr3FN3O15, namely NH2-MIL-101 (Cr); specifically, 1, 4-phthalic acid is taken as an organic ligand, chromium ions are taken as a center, a three-dimensional network structure is formed through a coordination relationship between the 1, 4-phthalic acid and the chromium ions, and through modification of 3-aminopropyltrimethoxysilane, an amino (-NH2) functional group is introduced while an original MOF three-dimensional network structure is reserved. An amino (-NH2) functional group is introduced to the surface of MIL-101 (Cr), the adsorption performance of the MIL-101 (Cr) is enhanced, and the material has rich pores, surface functional groups, high crystallinity, pore characteristics, adjustability and environmental friendliness, so that the material has high multifunctionality in the adsorption and related fields, nanoparticles can be removed from an aqueous solution, and the service life of the material is prolonged. The problem of water pollution caused by polystyrene nano plastic is solved.
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