Preparation method of metal organic framework material film as well as product and application of metal organic framework material film

Abstract

The invention discloses a preparation method of a metal organic framework material film, wherein the preparation method comprises the following steps: mixing 1-1.5mM ethanol amine aqueous solution with a same volume of 2-5mM copper nitrate aqueous solution by stirring magnetically, carrying out sealed reaction to obtain a copper hydroxide nanowire solution; then mixing 30-60ml of the copper hydroxide nanowire solution with 1-2ml of gold nanoparticle modified by citric acid root, filtering through a filtering film, and then depositing on the filtering film to obtain a gold-copper hydroxide nanowire layer; finally mixing the gold-copper hydroxide nanowire layer with 10-20ml of 4-10mM trimesic acid / ethanol aqueous solution to react for 1-5 hours, thus obtaining the metal organic framework material film. The invention also discloses application of the metal organic framework material film prepared by the preparation method and application of the metal organic framework material film in gas separation. The metal organic framework material film is formed by stacking cubic crystals; an exposed crystal plane is a {100} family of crystal plane.

Description

technical field [0001] The invention relates to a preparation method of a microporous film, in particular to a preparation method of a metal organic framework film and its product and application. Background technique [0002] Metal-organic framework films are a class of multilayer materials with thicknesses ranging from nanometers to micrometers that are physically or chemically attached to (functionalized) substrates. Ideally, metal-organic framework films have smooth surfaces and high homogeneity At the same time, due to its high porosity and good chemical stability, it has good application prospects in many fields such as adsorption separation, catalytic reaction, drug carrier and optical material. [0003] At present, there are many methods for preparing metal-organic framework thin films, including traditional solvothermal method, layer-by-layer growth method, sol-gel method, colloidal deposition method, and relatively novel microwave synthesis method, step-by-step liq...

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Problems solved by technology

[0004] For example, although the solvothermal method is relatively simple to prepare, its synthetic material is mainly powder, and it is difficult to produce a dense film;

[0005] For example, the thickness of the film prepared by the sol-gel method and the colloidal deposition method is difficult to be uniform, and the uniformity is not good;

[0006] For example, the steps of the layer-by-layer growth method are cumbersome and the film growth cycle is long;

[0007] For example, the development of microwave synthesis method, step-by-step liquid phase epitaxy growth method and electrochemical synthesis method is not yet mature, and the production cost is relatively high.

[0008] In addition, these methods need to be carried out in an environment of 120°C and above, and cannot be carried out at room temperature; secondly, the production cycle of these methods is long, generally ranging from 2 to 7 days, and the production cost is high, making it difficult to Realize large-scale production and application

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