Violet Tungsten Oxide Nano Powder Applied for Nano Transparent Thermal Insulation Coating

Violet tungsten oxide nano powder is a kind of important raw material for producing nano transparent thermal insulation coating. And the obtained coating is a green building energy-saving material. As a raw material for energy-saving building materials, the UV-visible-near-infrared spectroscopy absorption properties of nano violet tungsten oxide are the focus of attention. Experts said that its performance can be directly measured on the powder or the aqueous solution thereof.

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1.0 Determination of violet tungsten oxide nano powder. The ultraviolet-visible near-infrared spectrometer equipped with an integrating sphere of Umbd950 was used to measure the ultraviolet-visible absorption spectrum of violet tungsten oxide powder. The nano powder was filled in a quartz glass groove fixture, and the standard BaSO4 whiteboard was used as a reference. Wavelength range is 200-2500nm.

2.0 Determination of aqueous solution of violet tungsten oxide. The violet tungsten oxide powder was dissolved in deionized water, and the aqueous solution was prepared according to the concentration of 0.25g/L, 0.5g/L, and 1g/L. And then the aqueous solution was subjected to ultraviolet-visible absorption spectroscopy. Pure deionized water was used as a reference. And the wavelength range was 400nm to 1400nm.

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