What is a Tungsten oxide (WO₃)?

Tungsten oxide (WO₃) is an inorganic compound composed of tungsten (W) and oxygen (O). Tungsten is a transition metal with a high melting point, making it suitable for high-temperature applications. Tungsten oxide typically appears as a white or pale yellow crystalline powder and is chemically stable with excellent heat resistance. WO₃ is notable for its optical and electrical properties. It is used in various fields, such as optical materials, where it contributes to the production of transparent conductive films and glass with titanium coatings. Additionally, tungsten oxide's electrochemical properties make it useful in sensors and batteries.

One significant application of WO₃ is in "smart windows," which adjust transparency when voltage is applied, improving energy efficiency. WO₃ is also used in catalytic reactions, such as vehicle exhaust purification. Its lightweight nature, compared to metallic tungsten, makes it valuable in aerospace and high-performance electronic devices. Thus, tungsten oxide plays a key role in various industries, particularly in energy efficiency and environmental protection, and its importance is expected to grow in the future.

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