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Ultra-small nano metal organic framework material and preparation method thereof

A metal-organic framework and organic framework technology, which is applied in the field of ultra-small nano-metal organic framework materials and their preparation, can solve the problems of increasing production costs, low activity, and limiting industrial applications, and reduce the generation and preparation of by-products The effect of simple process and short solvothermal reaction cycle

Active Publication Date: 2021-06-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, the metal ions used in existing MOFs are usually noble metals, and the activity of MOFs prepared from common metals is much lower than that of MOFs prepared from noble metals.
This undoubtedly increases the production cost and limits the industrial application

Method used

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  • Ultra-small nano metal organic framework material and preparation method thereof
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  • Ultra-small nano metal organic framework material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of ultra-small nanometer metal organic framework material, as follows:

[0035] 1) Weigh 1mol FeCl 3 2THF and 3mol CuCl 2 ·2THF, 10mol organic ligands, wherein the organic ligands are mixed with terephthalic acid, mes-tetrakis(4-carboxyphenyl)porphine and trimesic acid in a molar ratio of 3:2:8. After mixing the weighed raw materials, add a solvent mixed with ethanol and o-dichlorobenzene at a volume ratio of 2:1 to prepare a mixed solution with a metal concentration of 0.1mol / L;

[0036] 2) Add a surfactant that accounts for 2% of the metal source mass in the mixed solution, and mix well to obtain a mother liquor, wherein the surfactant is sodium dodecylbenzenesulfonate and Tween 80 in a mass ratio of 1:1 mixed;

[0037] 3) Put the mother liquor in a reaction kettle, and carry out solvothermal reaction under the protection of a reducing atmosphere. The reaction temperature is 100°C, and the reaction time is 1h. The reducing atmosphere is a mixtu...

Embodiment 2

[0040] A preparation method of ultra-small nanometer metal organic framework material, as follows:

[0041] 1) Weigh 1mol FeCl 3 2THF and 1mol CuCl 2 2THF, 1molZnCl 2 · 2THF, 15mol organic ligand, wherein the organic ligand is a mixture of terephthalic acid, meso-tetrakis(4-carboxyphenyl) porphine and trimesic acid in a molar ratio of 3:5:8. After mixing the weighed raw materials, add a solvent mixed with ethanol and o-dichlorobenzene at a volume ratio of 3:1 to prepare a mixed solution with a metal concentration of 0.1mol / L;

[0042] 2) Add a surfactant that accounts for 2% of the metal source mass in the mixed solution, and mix well to obtain a mother liquor, wherein the surfactant is sodium dodecylbenzenesulfonate and Tween 80 in a mass ratio of 1:1 mixed;

[0043] 3) Put the mother liquor in a reaction kettle, and carry out solvothermal reaction under the protection of a reducing atmosphere. The reaction temperature is 100°C, and the reaction time is 1h. The reducing a...

Embodiment 3

[0046] A preparation method of ultra-small nanometer metal organic framework material, as follows:

[0047] 1) Weigh 1mol FeCl 3 2THF and 1mol ZnCl 2 · 2THF, 4mol organic ligand, wherein the organic ligand is a mixture of terephthalic acid, medium-tetrakis(4-carboxyphenyl) porphine and trimesic acid in a molar ratio of 3:1:8. After mixing the weighed raw materials, add a solvent mixed with ethanol and o-dichlorobenzene at a volume ratio of 1:1 to prepare a mixed solution with a metal concentration of 0.1mol / L;

[0048] 2) Add a surfactant accounting for 3% of the metal source mass in the mixed solution, and mix well to obtain a mother liquor, wherein the surfactant is sodium dodecylbenzenesulfonate and Tween 60 in a mass ratio of 1:1 mixed;

[0049]3) Put the mother liquor in a reaction kettle, and carry out solvothermal reaction under the protection of a reducing atmosphere. The reaction temperature is 100°C, and the reaction time is 1h. The reducing atmosphere is a mixtur...

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Abstract

The invention provides an ultra-small nano metal organic framework material and a preparation method thereof. The MOFs material is prepared from a low-cost metal source and organic ligands through solvothermal reaction, wherein metal ions in the metal source are at least two of ferric ions, bivalent copper ions or bivalent zinc ions; the ligands are at least two of terephthalic acid, 2-aminoterephthalic acid, meso-tetra (4-carboxyphenyl) porphin, 2-nitroterephthalic acid, 2-hydroxyterephthalic acid and trimesic acid; the solvent is formed by mixing ethanol and o-dichlorobenzene according to the volume ratio of (1-3): 1. The particle size of the prepared MOFs material is 2-10 nm, and the prepared MOFs material is high in dispersity, specific surface area and activity. The MOFs material aqueous solution can generate a large amount of active oxygen in an ultrasonic environment, and has extremely high medical value.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, in particular to an ultra-small nanometer metal organic framework material and a preparation method thereof. Background technique [0002] Metal-organic framework materials, or MOFs for short, are organic-inorganic hybrid materials with intramolecular pores formed by the self-assembly of organic ligands and metal ions or clusters through coordination bonds. [0003] Since 1990, the Yaghi research group in the United States and the Kitagawa research group in Japan have successfully synthesized MOF materials with stable pore structures. They have various types, strong functionality, large porosity and specific surface area, adjustable pore size, biomimetic catalysis and biocompatibility. MOFs materials with properties such as properties and properties continue to emerge. [0004] MOFs contain catalytically active metals, but the metal sites in MOFs are usually bound to or...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008C08G83/001
Inventor 黄品同张涛张超王雪屠佳伟
Owner ZHEJIANG UNIV
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