The nano tungsten oxide aqueous solution can be prepared by using nano ammonium metatungstate as a raw material. And the obtained aqueous solution can be used for producing transparent heat insulating material such as heat insulation film, and thus be applied to architectural glass to obtain thermal insulating glass.
The following is a preparation method of tungsten oxide nano aqueous solution, which has high stability with a small particle size of nano tungsten oxide.
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http://www.ammonium-metatungstate.com/
Specifically, the steps are as follows: 10ml of deionized water is taken in a beaker, 1g of ammonium metatungstate is weighed into the deionized water, 5g of sodium borohydride is added, mixed and shaken, heated to 95°C, and allowed to stand for 5 minutes. And a tungsten oxide nano aqueous solution with a particle size of 5-50nm was obtained. Experts said that the prepared tungsten oxide nano aqueous solution can be applied to the field of smart windows, providing a new solution for green energy-saving buildings.
