Cesium tungsten bronze powder may be applied for producing nano-ceramic dispersion solution, which may be used in the production of nano-ceramics. So, the overall performance of nano-ceramic materials may be improved to some extent. In recent years, this kind of dispersion solution has been well received by the market. Therefore, more and more scholars have begun to study how the raw material cesium tungsten bronze is prepared.
Preparation of Cesium Tungsten Bronze Powder
1.0 Adopt sodium tungstate (Na2WO4?2H2O) as a raw material to prepare 0.5mol/L sodium tungstate solution, and the 0.5mol/L tungstic acid sol was obtained by cation resin exchange.
2.0 Add an appropriate amount of citric acid solution and an appropriate amount of cesium carbonate solution to the obtained tungstic acid sol, and stir uniformly to obtain the hydrothermal reaction precursor liquid. The ratio of n (Cs)/n (W) in the precursor liquid is 0.1:1, 0.2:1, 0.3:1, respectively. And the citric acid concentration is 1.1mol/L.
3.0 The precursor solution was placed in an autoclave and reacted at 190°C for 3 d. After ultrasonic washing, alcohol washing, centrifugation, and drying, the cesium tungsten bronze powder was finally obtained.
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