Cs0.33WO3 is an environmentally friendly dark blue powder material for the preparation of near-infrared shielding material. As the materials obtained are mostly transparent building thermal insulation materials with excellent heat insulation performance and UV resistance performance, the preparation of Cs0.33WO3 nano particles has received more and more attention.
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Some experts said that from the raw material and cost point of view, Na2WO4?2H2O and Cs2CO3 raw materials are cheap. And they are non-toxic with excellent optical performance. Also, the preparation process is simple. Besides, no pollutants are generated during the preparation process. So, these two raw materials are more suitable for mass production of Cs0.33WO3 nano powder. While the WCl6 and CsOH?H2O raw materials are more expensive. WCl6 is a highly toxic drug and CsOH?H2O is one of the strongest alkalis known. Therefore, the preparation process of Cs0.33WO3 powder by these two raw materials is dangerous, which is harmful to the human body and the environment.
