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Magnetic composite metal organic framework material of multi-stage structure and manufacturing method thereof

A metal framework material, magnetic metal technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, light water/sewage treatment, etc., can solve the problems of cumbersome preparation process and long preparation time, etc. Achieve the effect of simplifying the preparation process, enriching the preparation method, and improving the absorption efficiency of visible light

Active Publication Date: 2015-10-28
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two patents are very good at preparing magnetic composite metal-organic framework materials, their preparation process is cumbersome and the preparation time is relatively long

Method used

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  • Magnetic composite metal organic framework material of multi-stage structure and manufacturing method thereof
  • Magnetic composite metal organic framework material of multi-stage structure and manufacturing method thereof
  • Magnetic composite metal organic framework material of multi-stage structure and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Preparation of Fe-88B precursor solution: first weigh 2.496g FeCl 3 6H 2 O (the added FeCl 3 The mass is 0.42g) into 40mL of ethylene glycol solvent, then 0.3668g of terephthalic acid is added, and finally it is fully dissolved by ultrasonic dispersion to form a uniform solution.

[0024] (2) Addition of reducing agent and complexing agent: transfer the solution in (1) to an oil bath at 80° C., and after magnetically stirring for 5 minutes, first add 0.71 g of sodium citrate, and magnetically stir for 15 minutes. Then 0.49 g of anhydrous sodium acetate was added, and the stirring reaction was continued for 15 min to obtain a mixed solution.

[0025] (3) Hydrothermal reaction: Add the mixed solution in (2) into a 50 mL polytetrafluoroethylene-lined reactor, then raise the temperature to 200° C. and keep it warm for 10 h. After cooling to room temperature, centrifugation, washing with DMF, washing with anhydrous methanol, and vacuum drying at 80°C, the lamellar str...

Embodiment 2

[0027] (1) Preparation of FeBTC precursor solution: first weigh 1.664g FeCl 3 6H 2 O (the added FeCl 3 The mass is 0.24g) into 40mL of ethylene glycol solvent, and then 0.72g of 1,3,5-trimellitic acid is added, and finally it is fully dissolved by ultrasonic dispersion to form a uniform solution.

[0028](2) Addition of reducing agent and complexing agent: transfer the solution in (1) to an oil bath at 80° C., and after magnetically stirring for 5 minutes, first add 0.47 g of sodium citrate, and magnetically stir for 10 minutes. Then 0.98 g of anhydrous sodium acetate was added, and the stirring reaction was continued for 10 min to obtain a mixed solution.

[0029] (3) Hydrothermal reaction: Add the mixed solution in (2) into a 50 mL polytetrafluoroethylene-lined reactor, then raise the temperature to 200° C. and keep it warm for 8 hours. After cooling to room temperature, centrifugation, washing with DMF, washing with anhydrous methanol, and vacuum drying at 80°C, the mult...

Embodiment 3

[0031] (1) Preparation of Cr-MIL-101 precursor solution: first weigh 2.460g Cr(NO 3 ) 3 9H 2 O and FeCl 3 6H 2 O0.47g was added to 40mL of ethylene glycol solvent, and then 0.3668g of terephthalic acid was added, and finally it was fully dissolved by ultrasonic dispersion to form a uniform solution.

[0032] (2) Addition of reducing agent and complexing agent: transfer the solution in (1) to an oil bath at 80° C., and after magnetically stirring for 5 minutes, first add 0.47 g of sodium citrate, and magnetically stir for 10 minutes. Then 0.98 g of anhydrous sodium acetate was added, and the stirring reaction was continued for 10 min to obtain a mixed solution.

[0033] (3) Hydrothermal reaction: Add the mixed solution in (2) into a 50 mL polytetrafluoroethylene-lined reactor, then raise the temperature to 200° C. and keep it warm for 8 hours. After cooling to room temperature, centrifugation, washing with DMF, washing with anhydrous methanol, and vacuum drying at 80°C, th...

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Abstract

The invention discloses a magnetic composite metal organic framework material of a multi-stage structure and a manufacturing method thereof and belongs to the technical field of magnetic metal organic framework materials. The manufacturing method comprises the steps that one or more kinds of metal salt containing ferric chloride and aromatic carboxylic acid ligand are dissolved in high-boiling-point organic solvent according to a certain proportion, and the magnetic composite metal organic framework material, containing superparamagnetic Fe3O4, of the multi-stage structure is further grown in situ through a solvothermal method by controlling the molar ratio of the metal salt to aromatic carboxylic acid and the molar ratio of added ferric chloride and by using proper reducing agents and complexing agents in cooperation. Due to the fact that a Fe3O4 nano magnet and the metal framework material can be combined in situ at the same time, the manufacturing procedure of the magnetic metal framework material is greatly shortened, and the technique is greatly simplified. The novel magnetic composite metal organic framework material of the multi-stage structure can serve as a visible-light-induced photocatalyst for organic pollutants and has potential application value on the aspects of adsorption, separation, biological medicine and the like.

Description

technical field [0001] The invention relates to a magnetic composite metal organic framework material with a multi-level structure and a preparation method thereof, belonging to the technical field of magnetic metal organic framework materials. Background technique [0002] Metal-organic frameworks (MOFs) are a new type of organic-inorganic hybrid porous materials, which have a periodic infinite network structure formed by the self-assembly of transition metal ions or metal clusters and organic ligands. New crystalline materials. Compared with traditional porous materials, MOFs have the advantages of both inorganic compounds and organic polymers, with high porosity, special topological structure, regular pore structure, large specific surface area, adjustable structural properties, low Characterization of crystal density and species diversity. It is these own properties that make MOFs have organic-inorganic hybrid characteristics, structural order and tailorability, microp...

Claims

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Application Information

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IPC IPC(8): B01J31/28C02F1/30
Inventor 王戈金召奎高鸿毅王静静汤甲谭丽杨明范爽
Owner UNIV OF SCI & TECH BEIJING
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