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MRUDUL MODAK
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Volume 46 All articles Published: 9 February 2023 Article ID 0028
MRUDUL MODAK SUNIT RANE SHWETA JAGTAP
Metal oxides constitute a large and crucial class of chemical compounds. They form one of the most fascinating classes of functional materials. Owing to their unique physical and chemical properties, metal oxides are undoubtedly ideal candidates for a wide variety of applications in the field of sensing, energy conversion and storage, ceramics, catalysis, etc. Tungsten oxide (WO$_3$) is one such n-type semiconductor with intriguing properties making it highly useful for various technological applications, especially gas sensing of various volatile organic compounds, environmental and toxic gases. Gas sensing has gained a lot of interest among researchers over the years and has proved to be one of the most promising application areas for semiconductor metal oxides, as they react to oxidizing and reducing gases leading to considerable change in their electrical conductivity. This review mainly focuses on the synthesis techniques of WO$_3$ and the use of WO$_3$ for gas sensing applications. Moreover, the morphology of WO$_3$ obtained at a nanoscale also has a significant effect on its sensing efficiency, as the gas sensing mechanism is mainly based on the reaction occurring on the sensor surface. This review also provides a detailed overview of the effect of various morphologies on gas sensor parameters as well as a glimpse into the vast variety of WO$_3$ nanocomposite materials and their applications for gas sensing.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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