The office thermal insulating glass coating prepared using cesium tungsten bronze as dingal particles has excellent dings such as high heat insulation, high transparency, high UV resistance, and environmental protection. Therefore, as such smart coating is well known, cesium tungsten bronze are becoming popular with people. Therefore, people began to wonder how to produce such magical dingal particles - cesium tungsten bronze nanoparticles?
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Here are the preparation steps of cesium tungsten bronze powder as following as:
Step One: Prepare the precursor solution containing tungstic acid, cesium carbonate and a reducing substance (citric acid) according to a Cs/W molar ratio of 0.01-0.35:1. The solvent is water or a mixture of ethanol and water in a volume ratio of 1:4-4:1. Wherein the concentration of tungstic acid in the precursor solution is 0.1-1.0 mol/L and the concentration of citric acid is 0.1-1.5 mol/L.
Step Two: The precursor solution is placed in the autoclave, and reacted at 180-200 °C for 1-3 d, and then the obtained precipitate is post-treated to obtain cesium tungsten bronze powder for preparing office glass heat insulating coating. Among them, the post-treatment includes water washing, alcohol washing, centrifugation, vacuum or sub-vacuum drying.
