Nano Cesium Tungstate Applied for Nano-ceramic Dispersion Solution

Nano cesium tungstate for nano-ceramic dispersion solution prepared by the existing preparation method has a problem of poor dispersibility and poor heat insulation performance. In this regard, experts have proposed the following preparation method of cesium tungstate nanopowder, which can solve the above problems, the specific steps are as follows:

More details, please visit:
http://www.tungsten-powder.com/cesium-tungsten-bronze-chinatungsten.html

1.0 According to n(CS)/n(W)=0.33:1, ammonium tungstate and cesium sulfate are dissolved in citric acid solution and ethanol, stirred uniformly, and reacted at 180-200°C for 2~3h to obtain the mixture of tungsten and cesium;

2.0 Add appropriate amount of urea to the mixture of tungsten and cesium, adjust the pH of the reaction solution to 3~5, stir until the urea is completely dissolved; the amount of urea is η(urea)=n(Cs1+)+6n(ff6+);

3.0 Wash the mixture completely dissolved in step 2.0 with argon gas, and carry out chemical reaction for 2~6h under ultrasonic protection (ultrasonic radiation frequency of 24.45kHz) under the protection of argon gas at 70~90°C to obtain colloidal precipitate;

4.0 The colloidal precipitate was aged for 4-24 hours, then filtered, washed, dried, and finally calcined to obtain nano cesium tungstate powder. The specific process of filtration and washing is: use vacuum filtration, washing the colloidal precipitate twice with distilled water, and then washing with a volume fraction of 10% ethanol solution until the filtrate is neutral, and finally wash twice with deionized water or absolute ethanol.

• < Prev
• Next >