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ATO-coated cesium-tungsten bronze composite nano-powder and preparation method thereof

A technology for coating cesium tungsten bronze and cesium tungsten bronze, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as insufficient stability of cesium tungsten bronze, achieve excellent chemical stability, excellent dispersion, control easy effect

Active Publication Date: 2021-08-13
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of insufficient stability of cesium tungsten bronze existing in the above-mentioned prior art, and provide a kind of antimony-doped tin dioxide ATO coating with excellent absorption performance and excellent stability for infrared light with an infrared wavelength greater than 1500nm Cesium tungsten bronze composite nanopowder and preparation method thereof

Method used

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  • ATO-coated cesium-tungsten bronze composite nano-powder and preparation method thereof
  • ATO-coated cesium-tungsten bronze composite nano-powder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0078] 1.5mmol WCl 6 Dissolve in 40ml of absolute ethanol, and stir magnetically at room temperature for 10min to obtain a yellow solution. In a separate beaker, mix 0.5 mmol CsOH·H 2O was dispersed in 20ml absolute ethanol. Add the obtained cesium hydroxide alcoholic solution and 12ml of glacial acetic acid into the tungsten hexachloride alcoholic solution to obtain a yellow solution. The solution was poured into a hydrothermal reaction kettle, and after the temperature was raised to 220° C., the reaction was carried out for 12 hours. After the reaction is finished, the precursor solution is taken out after the reactor is cooled to room temperature. The resulting precursor solution was washed three times with deionized water and absolute ethanol, and centrifuged several times; dried in an oven at 60°C for 12 hours to obtain dark blue nano-Cs 0.33 WO 3 Powder sample, the particle size is 110-130nm.

[0079] Disperse 2 g of the cesium tungsten bronze powder in absolute et...

Embodiment 2

[0084] 1.5mmolWCl 6 Dissolve in 40ml of absolute ethanol, and stir magnetically at room temperature for 10min to obtain a yellow solution. In a separate beaker, mix 0.25mmoCsOH·H 2 O was dispersed in 20ml absolute ethanol. Add the obtained cesium hydroxide alcoholic solution and 12ml of glacial acetic acid into the tungsten hexachloride alcoholic solution to obtain a yellow solution. The solution was poured into a hydrothermal reaction kettle, and the temperature was raised to 240° C., and reacted for 10 h. After the reaction is finished, the precursor solution is taken out after the reactor is cooled to room temperature. The resulting precursor solution was washed three times with deionized water and absolute ethanol, and centrifuged several times; dried in an oven at 60°C for 12 hours to obtain dark blue nano-Cs 0.17 WO 3 Powder sample, the particle size is 110-130nm.

[0085] Disperse 2 g of the cesium tungsten bronze powder in absolute ethanol, add polyethylene glyco...

Embodiment 3

[0089] 1.5mmol WCl 6 Dissolve in 40ml of absolute ethanol, and stir magnetically at room temperature for 10min to obtain a yellow solution. In a separate beaker, mix 0.375 mmol CsOH·H 2 O was dispersed in 20ml absolute ethanol. Add the obtained cesium hydroxide alcoholic solution and 12ml of glacial acetic acid into the tungsten hexachloride alcoholic solution to obtain a yellow solution. The solution was poured into a hydrothermal reaction kettle, and the temperature was raised to 240° C., and reacted for 10 h. After the reaction is finished, the precursor solution is taken out after the reactor is cooled to room temperature. The resulting precursor solution was washed three times with deionized water and absolute ethanol, and centrifuged several times; dried in an oven at 60°C for 12 hours to obtain dark blue nano-Cs 0.25 WO 3 Powder sample, the particle size is 110-130nm.

[0090] Disperse 2 g of the cesium tungsten bronze powder in absolute ethanol, add a dispersant ...

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Abstract

According to an ATO-coated cesium-tungsten bronze composite nano-powder and a preparation method thereof, a coating layer is antimony-doped tin dioxide ATO, particles of the composite nano-powder comprise a cesium-tungsten bronze core and an antimony-doped tin dioxide ATO shell coating the cesium-tungsten bronze, the general formula of the cesium-tungsten bronze core is CsxWO3, and x is larger than or equal to 0.1 and smaller than or equal to 0.33. In the preparation process, the surface of cesium-tungsten bronze is coated with ATO with stable chemical properties, the cesium-tungsten bronze core is isolated from external water or oxygen, the chemical stability of the cesium-tungsten bronze is improved, and good dispersity is kept. Meanwhile, the near-infrared absorption performance of the ATO and the near-infrared absorption performance of the cesium-tungsten bronze nanometer powder CsxWO3 are integrated, and the near-infrared absorption performance is further improved on the basis of not influencing the high visible light transmittance and the high infrared light barrier rate of the cesium tungsten bronze core, and is much better than that of the existing infrared barrier coating.

Description

Technical field: [0001] The invention belongs to the technical field of transparent heat-insulating powder, and in particular relates to an ATO-coated cesium tungsten bronze composite nano-powder and a preparation method thereof. The powder can be widely used in preparing infrared-blocking heat-insulating coatings and films. Background technique: [0002] Infrared rays are electromagnetic waves with wavelengths between microwaves and visible light, with wavelengths between 760nm and 2.5mm. Infrared rays, especially near-infrared rays, have obvious thermal effects, accounting for more than half of the solar radiation heat, so they need to be regulated in many fields. In the field of construction, the application of infrared blocking glass / coating / film can reduce the heat of near-infrared radiation, reduce the rise of indoor temperature in summer, reduce the use of refrigeration equipment such as air conditioners, and achieve the purpose of energy saving. In the automotive fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00C09K5/14B82Y30/00B82Y40/00C09D5/32
CPCC09K3/00C09K5/14B82Y30/00B82Y40/00C09D5/32C08K2201/011C08K9/10C08K3/22Y02P20/10
Inventor 吕鑫雨谢亚东薛宁李明亚王晓强
Owner 东北大学秦皇岛分校
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