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Preparation method of large-area nano-microparticles monolayer film

A nano-particle and single-layer film technology, which is applied to devices and coatings that apply liquid to the surface, can solve the problems of uneven particle size distribution of nano-films, difficult to control large-area films, and lack of application value. , to achieve the effect of simple operation and low cost

Inactive Publication Date: 2010-08-25
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the (1-4) method is simple to operate, and the particle size distribution in the obtained nano-film is uniform, it is not easy to control and obtain a large-area film, and it has not yet highlighted its significant application value in industry; although (5-7) Both methods require expensive equipment, but all three methods can be used in industrial production
However, the particle size distribution in the nanofilm obtained by the (5-7) method is not uniform

Method used

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  • Preparation method of large-area nano-microparticles monolayer film
  • Preparation method of large-area nano-microparticles monolayer film
  • Preparation method of large-area nano-microparticles monolayer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 3mL propanol to 5mL gold nanoparticle aqueous solution with a concentration of 0.91g / L, and then add 2mL benzene to form a benzene / water interface. After 2mL of water is injected, a gold nanoparticle film is formed on the benzene / water interface. The film was transferred to the substrate by pulling up and was observed under transmission electron microscopy (see Figure 3).

Embodiment 2

[0045] Add 2mL methyl ethyl ketone to 5mL gold nanoparticle aqueous solution with a concentration of 0.074g / L, and then add 2mL toluene to form a toluene / water interface. After 2mL of water is injected, a gold nanoparticle film is formed on the toluene / water interface, and then The film was transferred to the substrate by pulling up and was observed under transmission electron microscopy (see Figure 4).

Embodiment 3

[0047] Add 4mL butyric acid to 5mL gold nanoparticle aqueous solution with a concentration of 0.00043g / L, and then add 2mL cyclohexane to form a cyclohexane / water interface. After 2mL of water is injected, the gold nanoparticle film is in the cyclohexane / water The film is formed on the interface, and then the film is transferred to the substrate by the pulling method for transmission electron microscopic observation (see Figure 5).

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Abstract

The invention provides a method for preparing a large-area nanometer particulate monofilm. In terms of nanometer particulate aqueous solvent, water-soluble nano-particles are extracted from colloid solution by adding (water-soluble organic substances, non-water-soluble liquid organic substances and water) in sequence, thereby preparing the nanometer particulate monofilm on a water-soluble / non-water-soluble liquid organic interface; regarding nano-particle alcoholic solution, the water-soluble nano-particles are extracted from the colloid solvent by adding (non-water-soluble liquid organic substances and water) in sequence, thereby preparing the nanometer particulate monofilm on the water-soluble / non-water-soluble liquid organic interface. The method can realize large-area preparation of the nanometer particulate monofilm, and has the advantages of low cost, simple operation, rapidness, non toxicity or low toxicity.

Description

Technical field: [0001] The invention mainly relates to a method for preparing a large-area nanoparticle monolayer film by self-assembly. Background technique: [0002] Film materials have always been a key factor affecting the productivity of a country, which is mainly determined by its important position in the national economy. Thin film materials can be used in many research fields such as sensors, magnetic storage, electronic circuits, catalysis, and functional coating materials. The extensive research of nanomaterials has caused a new wave of research on thin film materials. This will inevitably lead to the further rapid development of many high-tech fields. [0003] So far, the preparation of nanoparticle films has generally adopted the following methods: [0004] (1) Natural evaporation assembly method. The nanoparticle solution is dropped onto the surface of the substrate used, and the nanoparticle film is obtained by gradually evaporating the solvent. This method is ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/00B05D7/24B05D1/18
Inventor 李永军刘才
Owner HUNAN UNIV
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