How to prepare yellow tungsten oxide? More specifically, how to prepare yellow tungsten oxide powder with excellent photochromic property? Yellow tungsten oxide, also called tungsten trioxide or WO3, is commonly used in the fields of light regulation, optical switch, optical information storage, optical device materials, optical information genetic materials, etc. Therefore, it is essential to prepare tungsten trioxide with excellent photochromic properties.

Yellow tungsten oxide is a common name of tungsten trioxide (WO3) from its appearance – yellow powdery crystals, which has excellent characteristics such as electrochromism, photochromism, and gasochromism. Well, do you know what are applications of yellow tungsten oxide?

Nano yellow tungsten oxide, namely nano tungsten trioxide or nano WO3, is an extremely attractive semiconductor photocatalytic material that has broad application prospects in environmental pollution purification and energy regeneration. Compared with the commonly used photocatalytic materials such as titanium dioxide (TiO2) and zinc oxide (ZnO), tungsten trioxide has a smaller band gap and a larger light absorption range, which can use visible light more effectively. Wherein, visible light accounts for nearly 50% of solar radiation energy.

Yellow tungsten oxide, which is also referred to as tungsten trioxide or WO3, has excellent electrochromic property. It is excellent electrochromic property that makes yellow tungsten oxide become a typical cathode electrochromic material. And the amorphous WO3 film is considered to be one of the most promising electrochromic materials. And therefore, WO3 is often seen in researches on electrochromic devices such as smart windows.