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A kind of preparation method of metal organic framework MOF-2 polycrystalline film

A metal-organic framework, MOF-2 technology, applied in the field of preparation of metal-organic framework MOF-2 polycrystalline film, to achieve the effect of high effective quality, simple process and good stability

Inactive Publication Date: 2016-04-27
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MOF-2 is one of the most studied classic materials in the metal-organic framework family. It is a metal-organic framework material with a two-dimensional layered structure constructed with zinc as the metal center and terephthalic acid as the organic ligand. There is no method suitable for industrial large-scale preparation of MOF-2 polycrystalline films

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  • A kind of preparation method of metal organic framework MOF-2 polycrystalline film
  • A kind of preparation method of metal organic framework MOF-2 polycrystalline film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A metal organic framework material MOF-2 polycrystalline film, the preparation steps are as follows:

[0019] Step 1, cut the zinc sheet with a thickness of 1mm into a rectangle of 1cm×2.5cm, and use 1000 # , 2000 # 、5000 # Grind with water-resistant sandpaper and cerium oxide polishing powder until the surface is smooth, that is, the surface of the zinc sheet is smooth and clean without scratches, protrusions or burrs, then ultrasonically clean the zinc sheet in 95% ethanol for 20 minutes, and dry at 80°C for later use .

[0020] Step 2, put 0.4g of terephthalic acid in a mixed solvent of 40ml of ethanol and water, the volume ratio of ethanol and water is 3:1, stir at room temperature for 0.5 hours to obtain a saturated solution of terephthalic acid, filter to remove terephthalic acid undissolved solid terephthalic acid in a saturated solution of dicarboxylic acid to obtain a clear saturated solution of terephthalic acid.

[0021] Step 3, with the zinc sheet descri...

Embodiment 2

[0025] A metal organic framework material MOF-2 polycrystalline film, the preparation steps are as follows:

[0026] Step 1, cut the zinc sheet with a thickness of 0.5mm into a rectangle of 1cm×2.5cm, and use 1000 # , 2000 # 、5000 # Water-resistant sandpaper and cerium oxide polishing powder are used to polish the surface until the surface is smooth, that is, the surface of the zinc sheet is smooth and clean without scratches, protrusions or burrs. Then, the zinc sheet is ultrasonically cleaned in 95% volume concentration ethanol for 30 minutes, and dried at 60°C for later use.

[0027] Step 2, put 0.4g of terephthalic acid in a mixed solvent of 40ml of ethanol and water, the volume ratio of ethanol and water is 4:1, stir at room temperature for 1 hour to obtain a saturated solution of terephthalic acid, filter to remove terephthalic acid undissolved solid terephthalic acid in a saturated solution of dicarboxylic acid to obtain a clear saturated solution of terephthalic acid...

Embodiment 3

[0030] A metal organic framework material MOF-2 polycrystalline film, the preparation steps are as follows:

[0031] Step 1, cut the zinc sheet with a thickness of 1mm into a rectangle of 1cm×2.5cm, and use 1000 # , 2000 # 、5000 # Grind the surface with water-resistant sandpaper and cerium oxide polishing powder until the surface is smooth, that is, the surface of the zinc sheet is smooth and clean without scratches, protrusions or burrs, then ultrasonically clean the zinc sheet in 95% ethanol with a volume concentration of 15 minutes, and dry at 80°C for later use .

[0032] Step 2, put 0.4g of terephthalic acid in a mixed solvent of 40ml of ethanol and water, the volume ratio of ethanol and water is 3:1, stir at room temperature for 1 hour to obtain a saturated solution of terephthalic acid, filter to remove terephthalic acid undissolved solid terephthalic acid in a saturated solution of dicarboxylic acid to obtain a clear saturated solution of terephthalic acid.

[0033...

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Abstract

The invention belongs to the field of new materials, and in particular relates to a preparation method of a metal organic framework MOF-2 polycrystalline film. The method is to dissolve terephthalic acid in a mixed solvent of ethanol and water to make a saturated solution, take the zinc sheet as the anode and provide the zinc source of the MOF-2 material at the same time, take the zinc sheet or other inert electrodes as the cathode, and immerse in the The metal organic framework MOF-2 polycrystalline film can be obtained on the anode zinc sheet in the above saturated solution, and a DC voltage is applied. The invention solves the problems of continuous and uniform growth and film formation of the MOF-2 polycrystalline film and the bonding between the film and the carrier. The synthesized MOF-2 polycrystalline film has continuous layers, uniform grain size, and no defects. Compared with other MOF-2 polycrystalline film preparation methods, the present invention not only has high film effective quality, but also has simple process, short time and fast production process. It has good stability, is suitable for large-scale industrial production, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a preparation method of a metal organic framework MOF-2 polycrystalline film. Background technique [0002] A thin film is a layer of material with a thickness ranging from a few nanometers to a few micrometers. Thin films can be used as excellent and efficient electronic or optical devices. Applications in electronic semiconductor devices and optical coatings mainly benefit from thin film structures. Metal-organic framework (MOF) is a novel nanoporous crystalline material, its structure is composed of metal ions or clusters connected with a variety of organic ligands in the form of coordination bonds. It has a large pore size range, controllable pore structure and size, high adsorption capacity and good thermal stability. It has broad application prospects in gas storage, catalysis, magnetism and other aspects. Considering the characteristics of MOF materials and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/12C25B3/13
Inventor 李忠月李飞飞刘伟马书启刘昆
Owner HENAN POLYTECHNIC UNIV
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