Tantalum-doped cesium tungsten bronze and preparation method and application thereof

A technology of cesium tungsten bronze and tungsten acid is applied in the field of tantalum-doped cesium tungsten bronze and its preparation, which can solve the problems of low visible light transmittance, limited shielding of tungsten bronze against near-infrared light, etc., and achieves the effect of simple process

Inactive Publication Date: 2019-04-26
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a tantalum-doped cesium tungsten bronze and its preparation method and application, aiming at solving the problem of tungsten bronze’s limited shielding of near-infrared light and the transmittance of visible light in the application process not high problem

Method used

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  • Tantalum-doped cesium tungsten bronze and preparation method and application thereof
  • Tantalum-doped cesium tungsten bronze and preparation method and application thereof
  • Tantalum-doped cesium tungsten bronze and preparation method and application thereof

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Embodiment 1

[0045] Weigh 1.628g of sodium tungstate and ultrasonically dissolve it in deionized water to make a 0.3mol / L sodium tungstate aqueous solution, weigh 0.0179g of tantalum chloride and dissolve it in an ethanol solution to make a 0.1mol / L tantalum chloride ethanol solution. After the above two are mixed, add 35mL of 0.5mol / L ammonium sulfate aqueous solution and mix evenly to obtain a mixed solution; add 7% nitric acid solution to the above mixed solution, control its pH0.33 Ta 0.01 W 0.99 o 3 Tantalum doped cesium tungsten bronze nanopowder.

[0046] The obtained tantalum-doped cesium tungsten bronze nanopowders were characterized by X-ray diffractometer, scanning electron microscope, energy dispersive spectrometer, X-ray photoelectron spectrometer and transmission electron microscope.

[0047] figure 1 The tantalum-doped cesium tungsten bronze nanopowder Cs obtained for this implementation 0.33 Ta 0.01 W 0.99 o 3 The XRD diffraction spectrum figure, from which it can be...

Embodiment 2

[0049] Weigh 1.616g of sodium tungstate and ultrasonically dissolve it in deionized water to make a 0.3mol / L sodium tungstate aqueous solution, weigh 0.0358g of tantalum chloride and dissolve it in an ethanol solution to make a 0.1mol / L tantalum chloride ethanol solution. After the above two are mixed, add 35mL of 0.5mol / L ammonium sulfate aqueous solution and mix evenly to obtain a mixed solution; add 7% nitric acid solution to the above mixed solution, control its pH<2, and make the above solution form a tungstic acid sol; Dissolve 0.278g of cesium chloride in deionized water and stir thoroughly, mix well with tungstic acid sol, add reducing agent ethylene glycol and water mixed solution, stir in 80°C water bath for 1 hour, then put it into the reaction of polytetrafluoroethylene lining Conduct hydrothermal reaction at 200°C for 48 hours in a kettle, wash with water, wash with alcohol and dry, and then calcinate at 600°C for 2 hours under an argon atmosphere to obtain tantalu...

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Abstract

The invention discloses tantalum-doped cesium tungsten bronze and a preparation method and application thereof. The tantalum-doped cesium tungsten bronze adopts a molecular formula of CsxTayW1-yO3, wherein y is greater than or equal to 0.01 and smaller than or equal to 0.30, and x is greater than or equal to 0.20 and smaller than or equal to 0.33. The tantalum-doped cesium tungsten bronze is applied to preparation of heat-insulating coating or a heat-insulating film, so that the heat-insulating coating or the heat-insulating film has the advantages of high near-infrared light shielding rate toand high visible light transmittance.

Description

technical field [0001] The invention relates to the field of tungsten bronze, in particular to a tantalum-doped cesium tungsten bronze and a preparation method and application thereof. Background technique [0002] As an integral part of architectural composition, glass has been extensively studied for its transparent and thermal insulation properties. In addition to improving the performance of the glass itself, scientists are also working on developing a transparent thermal insulation coating to reduce building energy consumption. In addition to achieving high visible light transmittance and high near-infrared light shielding rate in terms of performance, the transparent thermal insulation coating also has the advantage of low price. At present, the widely studied transparent thermal insulation coatings are: Sn-doped InO 3 (ITO), Sb-doped SnO 2 (ATO), F-doped SnO 2 (FTO), tungsten bronze, etc. Among them, tungsten bronze has the advantages of simple preparation method...

Claims

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Application Information

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IPC IPC(8): C01G41/00C09D7/61B82Y30/00
CPCB82Y30/00C01G41/006C09D7/61
Inventor 吕维忠华悦
Owner SHENZHEN UNIV
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