Method for preparing metal organic framework film having specific orientation by using template method

A metal-organic framework and template technology, which is applied in the fields of organic chemistry, electrolytic inorganic material coating, nanotechnology for materials and surface science, etc. and other problems, to achieve the effect of being conducive to large-scale industrial production, improving production efficiency and repeatability, and speeding up the reaction rate

Pending Publication Date: 2018-01-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this approach has significant limitations
First, this method is more complicated in actual operation, and the process is cumbersome, which is not conducive to large-scale production. At the same time, there may be some potential problems in reproducibility; second, the current reports on this method are mainly based on Metal-organic framework films with specific orientation are prepared on dense flat substrates, and when this method is used on porous substrates, the obtained metal-organic framework films no longer have specific orientations. made high demands
In many practical applications, it is difficult for us to be limited to only use dense and flat substrates, especially in the application of membrane separation.

Method used

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  • Method for preparing metal organic framework film having specific orientation by using template method
  • Method for preparing metal organic framework film having specific orientation by using template method
  • Method for preparing metal organic framework film having specific orientation by using template method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Using dense and flat conductive glass as a substrate to introduce a one-dimensional nanorod array template to prepare a ZIF-8 film with a specific orientation, specifically includes the following steps:

[0042] (1) Commercialized conductive glass was ultrasonically cleaned with ethanol for 10 minutes to remove surface stains;

[0043] (2) Prepare the solution required for electrodeposition of one-dimensional nanorod array templates: weigh zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) Dissolve 1.34g of granules in 100mL of distilled water, then add 2g of ammonium nitrate (NH 4 NO 3 ) particles, stirred at room temperature for half an hour to obtain a colorless transparent clear solution;

[0044] (3) Immerse the cleaned conductive glass in step (1) into the clarified solution obtained in step (2), pass a 0.8mA current, and react at 55°C for 120 minutes to obtain a zinc oxide one-dimensional nanorod array template-modified conductive glass. Glass;

[0045]The obta...

Embodiment 2

[0050] Using dense and flat conductive glass as a substrate to introduce a one-dimensional nanorod array template to prepare a ZIF-8 film with a specific orientation, specifically includes the following steps:

[0051] (1) Commercialized conductive glass was cleaned with ethanol ultrasonic cleaning for 15 minutes to remove surface stains;

[0052] (2) Prepare the solution required for electrodeposition of one-dimensional nanorod array templates: weigh zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) Dissolve 1.54g of granules in 100mL of distilled water, then add 2g of ammonium nitrate (NH 4 NO 3 ) particles, stirred at room temperature for half an hour to obtain a colorless transparent clear solution;

[0053] (3) Immerse the cleaned conductive glass in step (1) into the clarified solution obtained in step (2), feed a current of 1.5mA, and react at 70°C for 90 minutes to obtain a zinc oxide one-dimensional nanorod array template-modified conductive glass. Glass;

[0054] ...

Embodiment 3

[0059] The ZIF67 film with specific orientation is prepared by using a porous stainless steel mesh as a substrate to introduce a one-dimensional nanorod template, which specifically includes the following steps:

[0060] (1) A commercial porous stainless steel substrate (500 mesh, 316L) was ultrasonically cleaned with ethanol for 20 minutes to remove surface stains;

[0061] (2) Prepare the solution required for electrodeposition of one-dimensional nanorod array templates: weigh zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) Dissolve 2.98g of granules in 100mL of distilled water, then add 2g of ammonium nitrate (NH 4 NO 3 ) particles, stirred at room temperature for half an hour to obtain a colorless transparent clear solution;

[0062] (3) Immerse the porous stainless steel mesh cleaned in step (1) into the clarified solution obtained in step (2), feed a current of 3mA, and react at 95°C for 70 minutes to obtain a zinc oxide one-dimensional nanorod array template-modified...

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Abstract

The present invention discloses a method for preparing a metal organic framework film having specific orientation by using a template method. According to the method, a one-dimensional nano-rod template is modified on a substrate through an electrodeposition method, and a metal organic framework film having specific orientation is prepared at the one-dimensional nano-rod template through a solvothermal one-pot method. According to the present invention, the method can provide good versatility for a variety of substrates; the one-dimensional nano-rod template introduced by the electrodepositionmethod has the advantages of moderate chemical stability and moderate reaction activity, such that the reaction rate is substantially accelerated, the operation process is simplified, and the production efficiency is substantially improved; various substrates are the commercialized materials, and are cheap and are easy to obtain; and the metal organic framework film having the specific orientation is directly synthesized through the solvothermal one-pot method, such that the repeatability is high, and the method is suitable for the large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of oriented growth and preparation of metal-organic framework films, in particular to a method for preparing metal-organic framework films with a specific orientation by a template method. Background technique [0002] Metal-organic frameworks have received extensive attention since their inception. Due to its eternal porosity and extremely regular pore structure, coupled with its ultra-high specific surface area, it shows strong application prospects in various fields. Among them, in important industrial applications including catalysis, sensors, gas screening and separation, metal-organic framework materials have shown incomparable advantages over other materials. However, in our practical applications, in order to maximize the functionality of MOFs, we often need to integrate them into MOF films. As for many applications of thin films, we hope that the prepared metal-organic framework thin films have sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/58C25D9/04B82Y30/00B82Y40/00
Inventor 王海辉周胜魏嫣莹侯嘉敏
Owner SOUTH CHINA UNIV OF TECH
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