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Method for increasing gas-chromism thin film gas-chromism speed

An aerochromic and thin-film technology, applied in the field of aerochromic thin films, can solve problems such as the absence of thin-film materials, and achieve the effects of low cost, simple technology, and reduced reaction time

Inactive Publication Date: 2008-05-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, it has not been found that the use of ultraviolet lamps, high-energy rays or high-energy particle radiation techniques to improve the performance of amorphous WO 3 Related patent reports on aerochromic properties of thin film materials

Method used

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  • Method for increasing gas-chromism thin film gas-chromism speed
  • Method for increasing gas-chromism thin film gas-chromism speed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: prepare WO 3 film, the specific steps are as follows:

[0041] (1) WO 3 Sol preparation

[0042] Under normal temperature and pressure conditions, 35 grams of tungsten powder and 200ml of 30% hydrogen peroxide solution (N W :N H2O2 = 1:4) for stirring, fully reacted for 50 minutes, placed in a centrifuge, centrifuged at a speed of 2000 rap / min for 10 minutes, and filtered to obtain a light yellow transparent solution. Using a 500ml round-bottomed flask, add 300ml of absolute ethanol to the solution, and reflux in an oil bath at 80°C for 1.5 hours until the sol turns orange to obtain WO 3 ethanol sol. According to the needs of the experiment, the prepared WO 3 The sol was diluted with absolute ethanol to prepare the desired concentration of WO 3 Sol. The prepared sol can be stored stably at room temperature for more than 3 months.

[0043] (2) Catalyst-doped WO 3 Sol preparation:

[0044] Add catalyst to the sol obtained in step (1), and add PdCl...

Embodiment 2

[0061] Example 2: Platinum-doped MoO 3 Film preparation

[0062] (1)MoO 3 Sol preparation

[0063] Under normal temperature and pressure conditions, mix 3 grams of tungsten powder and 20ml of 30% hydrogen peroxide solution (N W :N H2O2 = 1:4) for stirring, fully reacted for 30 minutes, placed in a centrifuge, centrifuged at a speed of 2000 rap / min for 10 minutes, and filtered to obtain a light yellow transparent solution. Use a 300ml round bottom flask, add 50ml of absolute ethanol to the prepared solution, and reflux in an oil bath at 80°C for 1.5 hours until the sol turns orange to obtain MoO 3 ethanol sol. According to the needs of the experiment, the prepared MoO 3 The sol was diluted with absolute ethanol to prepare the desired concentration of MoO 3 Sol. The prepared sol can be stored stably at room temperature for more than 3 months.

[0064] (2) Platinum-doped MoO 3 Sol preparation:

[0065]Add catalyst in the sol obtained in step (1), mix K according to the...

Embodiment 3

[0081] Embodiment 3: Palladium-doped WO 3 -MoO 3 Preparation of composite films

[0082] (1) WO 3 -MoO 3 Preparation of composite sol

[0083] ① WO 3 Sol preparation

[0084] Under normal temperature and pressure conditions, 35 grams of tungsten powder and 175ml of 30% hydrogen peroxide solution (N W :N H2O2 =1:3.5) for stirring, fully reacted for 70 minutes, placed in a centrifuge, centrifuged at a speed of 2000 rap / min for 10 minutes, and filtered to obtain a light yellow transparent solution. Using a 1000ml round-bottomed flask, add 500ml of absolute ethanol to the solution, and reflux in an oil bath at 85°C for 2 hours until the sol turns orange to obtain WO 3 ethanol sol. According to the needs of the experiment, the prepared WO 3 The sol was diluted with absolute ethanol to prepare the desired concentration of WO 3 Sol.

[0085] ② MoO 3 Sol preparation

[0086] Under normal temperature and pressure conditions, mix 3 grams of tungsten powder and 20ml of 30% ...

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Abstract

The invention pertains to the technical field of gasochromic film, in particular to a method for improving gasochromism speed of the gasochromic film. The invention adopts sol-gel method for preparing the stable solution containing various metal oxides and the compound solution thereof; and various methods are employed for coating transparent and even gasochromic film on common glass or polished silicon wafer, and ultraviolet or high energy ray and high energy-particle mixing with catalyst are employed in the gasochromic film method so as to change the structure of film and enhance the coloring response speed of the gasochromism of the sol-gel technique, shorten coloring saturation time. Compared with the non treatment film, the gasochromism efficiency are greatly improved; and the performance is the same as the gasochromism produced by magnetron sputtering method, while, cost is greatly reduced; and the produced film by the invention also has the same advantages as the electrochromic film. The invention makes up the shortages of gasochromism smart window made by sol-gel preparation method, thus the smart window technique can be more mature.

Description

technical field [0001] The invention belongs to the technical field of aerochromic thin films, and in particular relates to a method for increasing the aerochromic speed of an aerochromic thin film. Background technique [0002] At present, energy shortage has become an issue of increasing concern to governments at all levels, and the use of clean, renewable, safe and reliable energy is imminent. Buildings are one of the units with high energy consumption. Their energy consumption has reached 27.6% of the total energy consumption of the society and will exceed 33%. 40% of the energy loss is caused by windows, which is 2-3 times that of developed countries. According to statistics, under heating or air conditioning conditions, the heat lost by single glass windows in winter accounts for about 30-50% of the heat load, and in summer, the cooling energy consumed due to solar radiation heat entering the room through glass windows accounts for about 20% of the air conditioning loa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34C03C17/23
Inventor 吴广明陈世文史继超高国华沈军周斌倪星元
Owner TONGJI UNIV
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