Nano Cs0.33WO3 Applied for Nano-ceramic Color Master

Nano Cs0.33WO3, or nano grain size cesium tungsten bronze, may be applied for producing nano-ceramic color master. And the raw material cesium tungsten bronze can be prepared by hydrothermal reaction using Na2WO4•2H2O and Cs2CO3 as raw materials. Specifically, the expert explained the following preparation steps:

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1.0 The cationic resin was fully activated with concentrated hydrochloric acid, and the activated cationic resin was thoroughly washed with deionized water to neutrality. Weigh a certain amount of sodium tungstate, dissolve in deionized water, and ion-exchange the sodium tungstate solution with styrene cation exchange resin to obtain a tungstic acid solution;

2.0 Weigh a certain amount of cesium carbonate, dissolved in deionized water, and formulated into cesium carbonate solution;

3.0 Weigh a certain amount of citric acid, dissolve in deionized water to prepare a citric acid solution;

4.0 The above-prepared tungstic acid solution was added to the citric acid solution and stirred continuously. The cesium carbonate solution was slowly added dropwise during the stirring, and the mixed solution was continuously stirred for 1h to obtain a reaction precursor liquid;

5.0 Transfer the reaction precursor solution into the reaction kettle, and hydrothermally react at 190°C for 3 days in an oven;

6.0 The precipitate obtained by the reaction was sequentially subjected to ultrasonication, water washing, alcohol washing, high-speed centrifugation for 3 times, and naturally dried at room temperature to finally obtain blue cesium tungsten bronze nano powder.

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