Cs Doped Tungsten Oxide Nanoparticles Applied for Transparent Thermal Insulation Nanopowder

Cs doped tungsten oxide nanoparticles applied for transparent thermal insulation nanopowder picture

Cs doped tungsten oxide nanoparticles, or cesium tungsten bronze (CsxWO3) nanoparticles, are dark blue powders. But, CsxWO3 nanopowder is sometimes called as transparent thermal insulation nanopowder as the heat-shielding products such as heat insulation films made of such a functional material are highly transparent with excellent near-infrared shielding performance. Well, do you know how to measure the near-infrared shielding performance of Cs doped tungsten oxide nanoparticles?

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Cs Doped Tungsten Oxide Nanoparticles Applied for Smart Glass

Cs doped tungsten oxide nanoparticles applied for smart glass image

Cs doped tungsten oxide nanoparticles for producing smart glass are also known as cesium tungsten oxide nanoparticles, cesium tungsten bronze nanoparticles or CsxWO3 nanoparticles. And such a smart glass has high transparency and excellent near infrared shielding performance. It is reported that after being exposed to UV light for 30 minutes, the color of cesium tungsten bronze nano powder changes from the original dark blue to dark purple. It indicates that photochromism has occurred.

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Near-infrared Shielding Material: Cs0.33WO3

near-infrared shielding material: Cs0.33WO3 picture

Cs0.33WO3, as the most widely studied near-infrared shielding material, is attracting more attention from different fields including nano materials, energy saving buildings and heat insulation products for autos. Well, you know, there are many other heat insulation materials such as LaB6, ITO and ATO. How about the heat insulation effects of Cs0.33WO3, LaB6, ITO and ATO?

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Near-infrared Shielding Material: Cs0.32WO3

near-infrared shielding material: Cs0.32WO3 picture

Cs0.32WO3, or cesium tungsten bronze, is a welcoming near-infrared shielding material as Cs0.32WO3 nano particles have been shown to manifest a strong absorption of near-infrared light. And therefore, cesium tungsten bronze is mainly applied to produce heat insulation coating and film for automotive and architectural windows.

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Near-infrared Shielding Material: CsxWO3

near-infrared shielding material: CsxWO3 picture

As a new type of near-infrared shielding material, CsxWO3 (cesium tungsten oxide) has selective and strong near-infrared absorption in the range of 800 to 1200 nm. And it is reported that cesium tungsten oxide diminishes near-infrared rays of shorter wavelength which has much of the heat energy in sunlight compared to ITO (tin-doped indium oxide) and ATO (antimony-doped tin oxide).

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CsxWO3 Applied for Near Infrared Absorbing Material

CsxWO3 applied for near infrared absorbing material picture

CsxWO3 for preparing near infrared absorbing material is cesium tungsten bronze that has higher light absorption performance in the near infrared region and higher transmission performance in the visible light region. With the wide application of such a functional material, more and more scholars have begun to pay attention to cesium tungsten bronze including its preparation method.

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Tungsten Bronze Applied for Near Infrared Absorbing Material

tungsten bronze applied for near infrared absorbing material picture

Tungsten bronze for preparing near infrared absorbing material refers to a class of tungsten bronze compounds. It may be cesium tungsten bronze, which has been widely used in many fields, such as energy-saving window, biothermotherapy to ablate cancer cells, military stealth coating, and optical anti-counterfeiting, etc.

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Tungsten Bronze Applied for Heat Insulation Dispersion

tungsten bronze applied for heat insulation dispersion picture

Tungsten bronze, such as cesium tungsten bronze, is often used to make a transparent heat insulation dispersion. And the prepared dispersion has the characteristics of high conductivity, high near-infrared shielding effect, high transparency, electrochromic property, photochromic property, light-to-heat conversion ability, photocatalytic property and dispersion stability.

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Tungsten Bronze Complex Applied for Near Infrared Shielding Material

tungsten bronze complex applied for near infrared shielding material picture

Tungsten bronze complex with the formula of M1xM2yWOz is a near infrared shielding material that developed for energy efficiency and carbon dioxide reduction. Wherein, M1 is Li, or Na; and, M2 is K, Rb, or Cs. The experts provide a method for fabricating such a near infrared shielding material of tungsten bronze complex, wherein the method includes:

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Tungsten Bronze Complex Applied for Infrared Absorption Material

tungsten bronze complex applied for infrared absorption material picture

The infrared absorption material can be a tungsten bronze complex with the formula of M1xM2yWOz, wherein 0.6≦x≦0.8, 0.2≦y≦0.33, 0.8≦x+y<1, and 2≦z≦3; M1 is Li, or Na; and, M2 is K, Rb, or Cs. In particular, the tungsten bronze complex consists of a cubic tungsten bronze (CTB) and a hexagonal tungsten bronze (HTB). Wherein, the molar ratio between the cubic tungsten bronze and the hexagonal tungsten bronze is between 0.995:99.005 and 5.005:94.995. The infrared absorption material can be applied in a thermal insulation structure to meet the requirements of high transmittance and high thermal insulation.

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