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Self-assembly method for air-water interface vanadium oxide nano film

A nano-film and vanadium oxide technology, which is applied in the field of preparation of vanadium oxide nano-film, can solve the problems that the film is easy to crack, not easy to obtain, and the surface is not smooth, so as to achieve the effect of no crack, smooth surface and simple preparation

Active Publication Date: 2012-02-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is to solve the existing VO 2 In the preparation method of the film, the equipment of the high-frequency magnetron sputtering method is expensive, the reaction evaporation method and the vacuum evaporation method are not easy to obtain the film of the crystalline structure, the sol-gel method film is prone to cracks, and the surface is not smooth. Technical problems, and provide air- Self-Assembly Method of Vanadium Oxide Nanofilms at Water Interface

Method used

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  • Self-assembly method for air-water interface vanadium oxide nano film
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  • Self-assembly method for air-water interface vanadium oxide nano film

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specific Embodiment approach 1

[0008] Specific embodiment one: the self-assembly method of the air-water interface vanadium oxide nano-film of the present embodiment is carried out according to the following steps: one, be 1: 5~7 by the volume ratio of the ammoniacal liquor of 25% by water and mass fraction, water and The volume ratio of hydrogen peroxide is 1: 2~3 Weigh water, mass fraction is 25% ammoniacal liquor and hydrogen peroxide and mix uniformly, obtain alkaline lotion; The ratio is 1:3~4, weigh hydrogen peroxide and dilute sulfuric acid with a mass fraction of 15%~20%, and mix them evenly to obtain an acidic lotion; 3. Put the glass petri dish, glass slide and glass container in the first step to prepare ultrasonically oscillate in the alkaline lotion for 25min to 35min, then place it in the acidic lotion prepared in step 2 and oscillate ultrasonically for 25min to 35min, take it out, rinse it with distilled water, and set aside; 4. The concentration of sodium naphthalenesulfonate is 0.035mol / L~...

specific Embodiment approach 2

[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one, the volume ratio of water and mass fraction of 25% ammonia water is 1: 5.2~6.8, and the volume ratio of water and hydrogen peroxide is 1: 2.1~ 2.9 Weigh water, ammonia water and hydrogen peroxide with a mass fraction of 25% and mix them uniformly to obtain an alkaline washing solution. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step one, the volume ratio of water and mass fraction of 25% ammonia water is 1: 5.5, the volume ratio of water and hydrogen peroxide is 1: 2.5 to take water, Ammonia and hydrogen peroxide with a mass fraction of 25% are uniformly mixed to obtain an alkaline washing solution. Others are the same as in the first embodiment.

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Abstract

The invention discloses a self-assembly method for an air-water interface vanadium oxide nano film and relates to a method for preparing a vanadium oxide nano film. The invention solves the technical problems that equipment in a high-frequency magnetron sputtering method is expensive, a film which has a crystal structure cannot be obtained easily in a reactive evaporation method and a vacuum vapor deposition method, a film obtained by a sol-gel method has cracks, and an unsmooth surface in the conventional method for preparing the vanadium oxide film. The method comprises the following steps of: preparing a sodium-naphthylsulfonate aqueous solution to obtain a template; and preparing a precursor solution by using vanadium tetrachloride, hydrochloric acid and deionized water, adding the precursor solution into a clean glass culture dish, adding a template solution, stirring, placing in a constant-temperature climate box, standing to obtain a wet film, and drying and roasting the wet film to obtain the vanadium oxide nano film. The film has a self-assembly ordered structure, and a smooth and uniform surface, is high in crystallization degree and can be applied to the field of lasing safety.

Description

technical field [0001] The invention relates to a preparation method of vanadium oxide nano film. Background technique [0002] VO 2 Thin films have good application prospects in the field of satellite laser protection. In military terms, using laser beams to attack enemy satellites or other optical monitoring equipment will be an important means of gaining the initiative and gaining strategic advantages in future wars. It is an important proposition of modern military science and technology to improve the anti-laser attack ability of the camera and protect the normal operation of satellites and other optical observation equipment in war. When a strong energy beam is incident on the VO 2 On film, VO 2 The film will absorb part of the light energy and cause the temperature to rise. When the phase transition point is crossed, the VO 2 The transmittance of the film in the visible and infrared bands can be reduced by two orders of magnitude, which can effectively block the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23
Inventor 吴晓宏宗薇秦伟陈振宁
Owner HARBIN INST OF TECH
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