Cs0.33WO3 powder is an important raw material for preparing a transparent dingal film with excellent near-infrared shielding performance. With the popularization and application of Cs0.33WO3 film, the preparation of Cs0.33WO3 powder has also attracted the attention of many scholars. So, how to prepare Cs0.33WO3 powder?
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A Preparation Method of Cs0.33WO3 Powder
6.60 g of sodium tungstate was added to 40 ml of deionized water to prepare a 0.5 mol/L transparent sodium tungstate solution. Then, 40 ml of the sodium tungstate solution was passed through the activated cation exchange resin to obtain a light-yellow tungstic acid liquid A1 with a pH of 1-1.5. Take 25.4g of citric acid directly into the A1 solution, continue stirring until the solution is clear, and then add deionized water until the solution volume is 100ml to obtain solution A3. 1.076 g of cesium carbonate was added to 10 ml of deionized water to obtain a solution C1. The C1 solution was slowly added to the A3 solution to obtain precursor A4. The A4 solution was transferred to an autoclave lined with polytetrafluoroethylene and reacted at 190 °C for 3 days. After the reaction was completed, the powder was washed with water and alcohol three times, respectively. Finally, it was dried at 60 °C to obtain Cs0.33WO3 powder.
