Nanostructured WO₃ based gas sensors: a short review

Abstract

Purpose

This paper aims to focus on the basic principle of WO₃ gas sensors to achieve high gas-sensing performance with good stability and repeatability. Metal oxide-based gas sensors are widely used for monitoring toxic gas leakages in the environment, industries and households. For better livelihood and a healthy environment, it is extremely helpful to have sensors with higher accuracy and improved sensing features.

Design/methodology/approach

In the present review, the authors focus on recent synthesis methods of WO₃-based gas sensors to enhance sensing features towards toxic gases.

Findings

This work has proved that the synthesis method led to provide different morphologies of nanostructured WO₃-based material in turn to improve gas sensing performance along with its sensing mechanism.

Originality/value

In this work, the authors reviewed challenges and possibilities associated with the nanostructured WO₃-based gas sensors to trace toxic gases such as ammonia, H₂S and NO₂ for future research.

Citation

Sriram, S.R., Parne, S., Vaddadi, V.S.C.S., Edla, D., P., N., Avala, R.R., Yelsani, V. and Sontu, U.B. (2021), "Nanostructured WO₃ based gas sensors: a short review", Sensor Review, Vol. 41 No. 4, pp. 406-424. https://doi.org/10.1108/SR-05-2021-0153