Nano tungsten trioxide powder may be applied for preparing thermal insulation dispersion, which is just one of many applications of tungsten trioxide, reflecting the photochromic properties of tungsten trioxide. Tungsten trioxide also has catalytic properties, and therefore can be used as a catalyst, which is widely applied in hydrodesulfurization, SCR denitrification, photocatalysis and the like.
Previously, the research on tungsten trioxide has mainly focused on the photocatalytic study of tungsten trioxide of monoclinic phase and tungsten trioxide of triclinic phase. And little research has been done on hexagonal tungsten trioxide. Now, hexagonal phase tungsten trioxide has also become a hot spot for tungsten series in photocatalytic research as the hexagonal phase tungsten trioxide is in metastable state and is likely to exhibit excellent optical properties. Besides, the synthesis conditions of hexagonal WO3 will affect the crystal form and hexagonal of the product, in turn, they affect the photocatalytic properties of WO3.
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